4 l2l9-JUN-1998 15:43 P. 1 I c=JBORAL ENERGY I · 0.15% and CO2 4%) and MDT at2811.8 metres recovered 18.84 cubic feet of gas (C, 62.6'%, C2 23.1 %, Cs 10.2%, jC4 1.8%, nC4 1.5%,

P. 1

I(J.G, -lQ.G

Ref:

l2ll2l362338338

Pages (incl this): J

Fax: 0 S 6. '2.

TOFROM BORAL ENERGY RESOURCES

C~)1J ~Y"\ ~~~ ~ ,0-(;)

GORAL ENERGY RESOURCES LIMITED ACN 007 845 338

Date:

From:

To:Attn:

Facsimile

BORAl ENERGY RESOURCES LIMITED60 Hindmarsh Square Adelaide SA 5000 AUSTRAlIA

GPO Box 2576 Adelaide SA 5001 AUSTFlALIA

Telephone (08) 8235 3737 +61882353737Facsimile (08) 82231851 +61882231851

l2l9-JUN-1998 15:434I c=JBORAL. _ENERGYIIIIIIeIIIII.-IIIIIII

I 09-JUN-1998 15:43 FROM EORAL ENERGY RESOURCES TO 121121362338338 P. 2

I c=JBORAL_ENERGY

IIIII

BORAL ENERGY RESOURCES UMrrED60 Hindmorsh Square Adelaide SA 5000GPO Box 2576 Adelaide SA 5001Telephone 61 8 8235 3737Facsimile 61 88223 1851

Date of Release: 19 May 1998

STOCK EXCHANGE RELEASE

Boral Energy Resources Ltd, a subsidiary of Bora! Limited, as Operator of Retention Lase,T/RL1 covering portion of the offshore Bass Basin, Tasmania, advises its weekly report in relationto the Yolla 2 appraisal well.

Evaluation of the well at total depth has confirmed the following:

Additional information is summarised below:

The Yolla 2 well site is situated about 2.35km south of YollaMelbourne and 130km north of Bumie, Tasmania.

The drilling of Yolla 2 is being managed by Premier Petroleum (Australia) Ltd on behalf ofEnergy Resources Ltd.

• A detailed assessment of the well results is required to determine the impact 6n the ulti aterecoverable gas reserves of the Yolla field and the implications for future development a thisresource.

• A good correlation of the various intra EVCM sandstone reservoirs has been establi hedbetween the Yolla 1 and Yolla 2 wells. Measurements taken on core samples ind"cateexcellent reservoir properties with porosities up to 25% and multi darcy permeabilities eingrecorded. Pressure measurements, however, indicate that field Wide gas water contact arehigher than previously inferred, which will reduce the reserves expectation for these rese airs.

• The deeper intra EVCM (Paleocene) reservoirs that were gas bearing in Yolla 1intersected downdip of Yolla 1 as intended, but up to 30 metres lower than prognosed.

• The well intersected a 23 metre gross gas bearing sandstone between 2,792.5 and 2, 15.5metres with excellent inferred reservoir properties. Spot (MDT) samples taken in this int IVairecovered gas, but all other sandstone intervals below this depth were established as atsrbearing.

• The top Eastern View Coal Measures ("EVCM~) was intersected 27 metres higher thanexpected. Yolla 2 was not intended to appraise the hydrocarbon column intersected in Y lIa 1at this level but the fact that the well has come in structurally high has increased the resexpectation for this zone.

IeIIIII.IIIII

Well name

SpUd date

Lease

Water Depth

Location

Yolla2

2100 hours on 9 April 1998

TIRL1

78 metres

Lat: 39° 51' 33.82" SLong: 1450 48' 38.53" E

IFinal Total Depth 3,164 metres SS

IWRAL ENERGY QfSOU~CES LIMITEr:: ACN OC7 ;45 338

Abandonment operations are currently in progress.

P ge2

P. 3

GXR 63-~W

40.5°

40.5~

00362338338TO

Wlreline logging, repeat formation testing and sidew 11coring operations were carried out over the period 1May to 19 May. .

MOdular Formation Dynamics Testing (MDT) at 2,81metres recovered 61 cubic feet of gas (C, 66.15%, 2

, 8.6%. C3 9.6%, iCt 1.8%, nCt 3.3%, iCs 0[4%, nCs0.15% and CO2 4%) and MDT at 2811.8 metresrecovered 18.84 cubic feet of gas (C, 62.6'%, C2 23.1 %,Cs 10.2%, jC4 1.8%, nC4 1.5%, iCs 0.6%, nCs 0.1 % andC02~8%) ,

Core No.1 was cut over the interval 3,033 to 3,050.metres and recovered' 7.7 metres of interbeddedsandstone and siltstone. Drllling operation,s resume on14 May and continued to a total depth 3,164 metres.Volcanics were intersected from 3,085 metres to tot Idepth.

Boral Energy Resources Ltd(and related corporations)

Premier Petroleum (Australia) Ltd

Galveston Mining Corporation Pty Ltd(a wholly owned subsidiary ofCue Energy Resources NL)

Santos Ltd • _

,-Q 7'··~.'"it.' / Jd2' /

(F····· d';;'b~h~ii~i'-", or~j Energy Resources Ltd

FROM EORAL ENERGY RESOURCES15:43

Summary of Operations

Participating Companies(subject to formalisation)

Release Authorised by

09-JUN-1998

c=lBORAL_ENERGY

.1IIIIIIIeIIIIII_IIIIIII

01/01~~PAGPREMIE~ OIL GEELONG

Minerals & Petroleum I 0394125152Cue Energy Resource: 0396297318Boral Energy ResourCI 0882231851Mineral Resource Tasl 0362338338CalEnergy 0011441712081620Santos Ltd, 0882247765Boral 0733697840

0352722058

Ahmed NadjiAndrew AdamsAngus GuthrieCarol BaconJohn TreenNeil TupperRoss Naumann

Report Distribution Lis1

Premier OilManagement Report: Issue date 30.05.98

I 30/05/1998 11: 05

IIIII-=================::::::::::::=======~=========::.....-_-----~

IWELL: Yolla-2 REP. NUMBER: 56 REP. DATE: 29.05.98

24 hr SUMMARY: UD 5" DP. Perform rig maintenance while W.O.W.

STATUS AT 0600: Recovering anchors.

PLANNED OP ; Recover remaining anchors; move to new location, deploy anchors for White Ibis well.

DIFF. AFE-CUM ~$3,481 ,( 02)AFE; $10.108,205

,

'\~\-.h-A a~a.u...L1 N ~

CUM :$13,589,20~$169.141

I.RILLING CO.: Northern Offshore RIG: Northern Explorer III HOLE SIZE (") ;

DEPTH (m): 3,164.00 PROGRESS (m)O.OO DAYS FROM SPUD 50.1~ DAYS +/- CURVE:

II

COST DATAI DAILY

I Copyright lOS, Nov 1997

II_IIIIIII

PAG

o PleaSe Recycle

Premier OilAustralasia

From: Gordon Hunter

Date: May 29, 1998

cc:

•.•, , .• - ' ••••••.• _.' _ '-_•• ' ,._._., '-".,•••••••._._. "._- "'--~' _ •• - - .....•.__ __w, ,.••• _ ••__

o Plea•• Reply

PREMIER OIL GEELONG

o PI.... Commento For Review

Victoria Minerals & Petroleum Ops, Attn: Ahmed Nadji

Mineral Resources Tasmania, Attn: Carol Bacon

Yolla 2 Daily Drilling Reports

To;

_ " ,_., ••••• ,.'. ,1.__• ,••_" "'.'_._ .•,•._-, _._.• ,..'_ ,_ , __"•• " ,_ ",•. " '_ _ .• " ." •._. n, ,

Fax:

Phon••

R.:Pages: 4 inc. this one---.---,.--.----.----..- ..---....- ...- ..---- ---------t---_

o Urgent

-Comments:

Please find attached the Daily Drilling report for 28th May 1998.

Regards

Gordon Hunter

Drilling Superintendent

Fax

I 29/05/1998 13: 09 0352722058

Premier Oil Austral;asiaGeelong Oper;ations BaseP~one:0352722101

Fax: 0352722058IIIIIII_IIII

I.IIIIIIII

I I 29/05/1998 13:09 0352722058 PREMIER OIL GEELONG PAGC 02

DAILY DRILLING REPORT _, 55

Yplla..2

~ 170.942$13420,066$10 108,205

P&A

DAILY COST $ ;CUM COST $.AFE COST $:

AFE BASIS:

13.38

8530.00

CUR, HOLE SIZE ("):CSGOD(") :

SHOE TVD (m RT);

LEAK·OfF EMW(ppg)

3.164.0

0.049.13

CURRENT OP @ 0600: Prepare equipment for next well; secure rig for weather event.

PLANNED OP. : Recover anchors as possible wIth weather conditions.

T.D. (m RTj:PROGRESS (m);

DAYS FROM SPUD:DAYS +1- CURVE;

AustraliaBass Basin

Northern OffshoreNorthero Explorer III

Dowell ~- J- """ +-__ I

12.581.594.0

Well DataCOUNTRYFIELDDRILL co.:RIG:

MUD CO:RT ABOVE MSL (m) :WATER DEPTH @MSL (m) :

RT TO SEABED (m) :

Summary of period 00:00 to 24:00 hrs:

Positioned & detonated collision severance charge 3.5m below wellhead.Performed seabed survey. Recovered moonpool spider beam. Begananchor recovery. UD 5" DP.

Formation Tops - This report ~nly

II FORMATION ITOP mBRTjI

01:30 .50

02:00 .50

02:30 .5003:30 1.00

04:00 .50

04:45 .75

05:30 .7508:30 3.00

09:30 1.00

11:00 1.00

12:15 1.25

13:00 .75

13:30 .50

14:00 .50

15:30 1.50

Copyright IDS pty Ltd, Rbtoffi report Mar 16th 1998.1 Page Number: 1

PAG: 03

CAlLY DRILLING REPORT ~ 55

Yc~lIa-2

PREMIER OIL GEELONG

3,164 Retrieved #5 &#1 bUoys &anchors· intend to leave remaining anchors & buoysuntil after forecast weather event (minimum expected to be sufficient foranticipated conditions). Concurrently, UD 5" DP.

0352722058

DEPTH ACTIVITY DESCRIPTION

1.00

8.50

28.05.98

HRS

13:0'3

05:00 06:00

FROM TO HRS DEPTH ACTIVITY DESCRIPTION

00:00 05:00 5.00 3,164 Continue to LID 5" DP • 38stds total laid down to meet maximum possible Ie ad inderrick permitted for rig move (while providing sufficient DP for next well).

3,164 Prepare PGB for next well while securing rig for forecast weather event.

15:30 24:00

FROM TO

ACTIVITY FOR PERIOD 00:00 HRS TO 06:00 HRS ON 29.05.98

Report Date:

Premier Oil

I 2'3/05/1'3'38

IIIII

5.592.0

o.3

8.5

0,0

ANNOTATIONS FOR PERIOD 00:00 HRS TO 24:00 HRS ON 28.05.98I ;Ud Properties MUD COST FOR TODAY: SO CUMULATIVE MUD COST TO DATE: $232,608

pe : VISCOSITY( sec I qt): 53 API FLUID LOSS CI· (ppm) : 38,000 SOLIDS (%\'01) :

I I PHPA PV (cps); 14 (cm3130mln) 5 K+ (ppm) 31000 H20 (%vol) ;API FILTER CAKE

~OM ; Active YP (lb/l00sq.ft). 26 (32nds Inell 1 HARD/Ca (ppm) : 0 OIL. (%~Ol) ,.. IME: 21 :30 GEL lOs/10m/30m HTHF' FLUID LOSS MBT (ppb eq) . 10.0 SAND.WEIGHT (ppg): 1.12 (lb/100sqft): 9 13 0 (cm3130min) 0 PM: 0.0 PH:

I TEMP(C) '. 30 FANN3/6/100 8 10 26 HTHP FILTER CAKE PF: ,1 PHPA:(32nds Inch) 0

Bulk Stocks Used lin Stock Used lin Stock Used lin Stock Used lin Stc ckDRILL WATER (bbl) :0 2.096 FUEL (bbl): 6 1,225 GEL (sx) : 0 475 HEll-FUEL (kltr) : 0.5 c.5

OT WATER (bbl): 0 1,668 BARITE (sx) : 0 6,173 CEMENT (sx) .0 4,928

AS: 50.0

A10 :

A4: 45.0

A9;

Weather & Rig data @ 24:00 hrsVOL (kips: 240.0

WIND SP. (kIS) : 25,0 VISIB.(nm): 10 RIS.TENS: 0WIND DIR (deg) :310 CEILING (m)2,OOO HEAVE (rn): 1.5PRES. (mbars): 1018 WAVES (m). 2.0 ROL.L. (deg): 1.5AIR TEMP (C); 15.0 SWEll (m): 300,0 PITCH (deg : 1,0

A3: 75.0A8: 0.0

810

A2: 35,0

A7: 75.0

2,076 1,9812,352 553

A1 : 30.0

A6: 40.0

561237

RigRig

location. Fuel Barite DlWtr Pfwlr Cmt Bent Hell(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr)

Anchors 1. 5. & 8 lifted: 2. 3. 4, 6 & 7 pi';lQied.18 PAX on rig, 18 PAX off rig. Commander & BrUle Tide al rig.COMMENTS:

P CommanderB Tide

WorkboatsI

Anchor Tension(kips)

III1.,__r_iII_s,;,.,p_e_r_m_I_t8..,..-&....:.I_"....:.SP:-8_crt_lo_n_t .,....-__--r- ,.-- -----+------,

DRIL.L. TYPE DATE INSPECTIONS DATE S,A.FETY DETAILS

Pago Numbel: 2

Slow IlumD Oata

SPP SPM SPP DEPTH MW(psi) (psi) (m RT) (ppg)

2514/9812/5/98ongoingongoing23/5/518

LTIMTIJSA#PTWSafely Meeting

PumD Data· last 24 hrs

1 Nat. 12-P· 7.00 972 Nat. 12-P· 7.00 97

# TYPE LNR SPM EFF Flow(") (%) (gpm

17/4/9831

Pump Data

N,VAMN.vAMN.vAMN,VAMN,VAMNVAM

lBOl80lBOL80l80LBO

GRD THREAD

853 853

68.068.068.068.068.068.0

WTJbslft

12.412.412.412.412.412.4

CSG10(")

14.911.512.3

713.43.15.5

LNGTH(m)

lOT PHASe CSG SHOE CSG SHOEMD TVD (maRT)

CSG00(")

TYPE

13.3/8 "

Shoejt1 xjtF/Collarjt62 xjts1 x pup "A"WHJt

Casinq

Copyright IDS Ply Ltd, RbtofB report Mar 16lh 1998.1

TRIP DRILL 13/5/98 BOP TeST 29/5/98

IFIRE 17/5/98 NEXT TEST DUE DATEPIT DRilL 13/5198 RIG INSPECTIONINCIDENT DAYS SINCE LTA

IIIIII

MD TVD INCL AZ. CORR. 'V' DOGLEG N/S ENV TOO TYPE(m RT) (m RT) DEG (deg) AZ SECT (m/30m) (m) (m)

(deg) (m)

2,575 1.00 Aldrl2.660 2.00 Aldrif2,661 2,00 Aldrif2.738 1.50 Aldrif2,892 2.00 A/drif3,061 2.50 A/drif3.147 2.20 54.5 67.1 EMS3.150 2.00 A1drif

0352722058

Copyright IDS Ply Ltd, RbtofB report Mar 16th 199B.1

Survey

Last Tool Type: AIdriftagnetic Declination: 12.60rvey method; Min Curvature

472

2511321

#

04PAG

Page Number; 3

COMPANY NAME

PremIerNorthernDowell Schlum CementAslaticROVDowell SChlum MudAustoll - Casing cuttingRig PosItioningUnaersea ROVFish Tools

DAILY DRILLING REPORT ~ 55

Vt!)lIa-2

PREMIEF<' OIL GEELONG

JOB TITLE NAME

Drl9 Supervisor StirretN. Drlg Supervisor Dubravac

Northern Explorer P Cox &RUddleston

Personnel: on Site =91

I 29/05/,1998 13: 09

I Premier OilI Report Date: 28.05.98

IIIIIIIII

I.1,-

IIIIIII

PREMIER OIL GEELONG PAG En

Please find attached the Daily Drilling reports from 23rd May 1998.

Gordon Hunter


o Please Recycle


From: Gordon Hunter

Date: May 29, 1998

Pages: 18 inc. this one

cc:

o Please Replyo Please Commento For Review


Voila 2 Daily Drilling Reports


To:

Fax:

o Urgent

Phone:

-Comments:

Re:

Regards

Fax

IIIIIIIeIIIIII_IIIIIII

I 29/05/1998 13: 59 0352722058 PREMIER OIL GEELONG PAG 02

I ~remier Oil DAILY DRILLING REPORT # 54

Yo la-2

CURRENT OF' @ 0600: Jump ROV to observe 30" stump after charge detonated.

PLANNED OP. : Retri8ve 30" housing.

Well DataCOUNTRYFIELDDRilL eo. :RIG:MUD CO;

RT ABOVE MSl (m) :WATER DEPTH @MSl (m) ;

RT TO SEABED (m) :

T.D. (m RT):PROGRESS (m):

DAYS FROM SPUD;

DAYS +/- CURVE:

3.164.00.0

48.13

CUR. HOLE SIZE ("):CSG 00 ("):

SHOE TVO (m RT):

lEAK-OFF EMW(ppg)

DAilY COST $ :13.38 CUM COST S :

853 AFE COST $ :

0.00 AFE BASIS:

$1 8.236$13,2 9,125$10,1 8,205

P&A


Locate charge in wellhead. Move 180m off location, detonate charge.Move back to location. R1H with CART attempt to pUll w/head ·puIl20"stub & 18 3/4" housing. RIH & attach sling round PGB - pull to surface.Inspect 30" stump with ROV

Formation Tops - This report o~lyII FORMATION [TOp(rf,eRT)

CTIVITY FOR PERIOD 00:00 HRS TO 24:00 HRS ON 27.05.98

Page lIIumbjtr : 1

.25

.25

.75

.50

.25

1.501.25

.255.25

1.50

3.00

.501.00

1.25

.2.5

.251.25

.75

3.50

HRS DEPTH ACTIVITY DESCRIPTIONROM TO

13:30 16:30

16:30 18:00

18:00 18:3018:30 19:30

19:30 20:00

20:00 20:15

20:15 23:45

.25 3,164 Stab charge into wellhead and suspend charge from T-piece which sits on tc p ofwellhead profile.

3,164 Shackel pod line with det cable to gUide line #1. Recover mini-ROV.3,164 Continue to retrieve anchor #8, Pull up anchor buoy#1, piggyback #1 and dr g

and redeploy #1 primary with anchor buoy. Use anchor winches to pUll 1S0rr (590ft) off location.

3,164 Prepare to detonate collision severance charge suspended in wellhead .3,164 Activated & detonated collision severence charge to cut WHo3,164 Moved rig back over location.3,164 Jumped ROV to inspect WH - observed WH standing vertical as previous w th

no obvious damage.3,164 ROV reported alarm due to pod flooding. Aborted dive & pulled ROV to surf ce

for troubleshoot. In meantime prepared to attempt to pull WH/PGB free withgUidewires.

3,164 ROV found water leak in pod· repairing same.3,164 Attempted to pull WH/PGB free with gUidewires - no success. Guidepost #1

pulled free from PGB. Recovered #1 guidepost to surface. Recovered tangl ad rigpod line c/w firing cable, firing head & mangled "T"bar.

3,164 Jumped ROV to seabed. MU 183/4" CART & ran down to WH on HWOP.3,164 Moved rig/dril1string over WHo Stabbed & latched CART into 18 3/4"WH witt

5RH turns manipulating CART position over WH with tuggers in moonpool.3,164 Attempted to pull WH/cut csg free· observed cut 18 3/4"WH pUll free from

30"Housing with 200K o/pull. Pulled 18 3/4" WH to surface.3,164 RU & broke out CART from 183/4" WH & I/out WH & CART. Obsv'd WH

severed with charge but lock ring stripped off the WHo ROV confirmed that WHlock ring was still in place inside the 30" Housing. Obsv'd PGB moved up +1 O.75m.

3,164 RU inverted OP elevators c/w wirerope slings on DP to fish PGB & 30"Housing.Ran fishing assy down to PGB.

3,164 ROV looped slings onto PGB frame.3,164 PU wt with compensator. Pulled PGB/30"Housing free with 20K o/pull (lost

Visibility when assy picked up from seabed). Pulled back to surface. Obsv'd onlyPGB recovered, 30"Housing still at seabed.

3,164 Landed PGB on moonpool cart. & removed slings & OP. Obsv'd PGBcracked/split & buckled allowing PGB to pull over 30"Housing. ROV confirn ed30"Housing still in place at seabed once visibility cleared.

3,164 ROV inspected around 30"Houslng for damage/signs of 30" being cutconcluded 30" not cut.

3,164 RU 90lb collision severance charge. Suspend charge 30m below rig and br ngup ROV to surface to locate charge.

23:45 24:00 .25 3,164 Search for charge below rig (poor Visibilty and sonar shadows caused by 51 als).

ACTIVITY FOR PERIOD 00:00 HRS TO 06:00 HRS ON 28.05.98CopyrighllDS Ply Lid. RbtotB report Mar 16th 1998.1

I'- 00:00 00: 15

00:15 00:3000:30 05:45

I05:45 06:00

I06:00 06:1506:15 07:3007:30 08:15

I 08:15 08:30

I08:30 08:4508:45 09:30

I 09:30 11:0011:00 12:15

........ '

12:15 13:30

IIIIIII

I 29/135/1998 13:59 133527221358 PREMIER OIL GEELONG PAG 133

I Premier Oil DAILY DRILLING REPORT # 54

I Report Date: 27.05.98 Yo la-2


I 00:00 01:00 1.00 3,164 Continue to search for charge below rig (poor visibilty and sonar shadowscaused by seals).

01:00 01:30 .50 3.164 Locate charge and follow to seafloor. Attempt to locate 30". During an attem I>tto

I grab charge in ROV manipulator - ROV tripped out, by the time it was reset hecharge was lost and possibly tangled in umbilical.

01:30 02:00 .50 3,164 Bring ROV to surface to clear umbilical. Check to see if possible to launch mtni-

IROV to provide a beacon for ROV to find charge· seas in moonpool to roug r·

02:00 02:30 .50 3,164 Continue with ROV to attempt to locate charge and wellbore.02:30 03:30 1.00 3,164 Locate charge and wellbore. Move rig on anchors and stab charge into wellbare.

Suspend charge on T-piece.

I03:30 04:00 .50 3,164 Bring ROV to surface to clear umbilical. Dive again to observe laying out of • DOft

of wire and det cable on seabed - to allow rig to move off location withoutdragging charge free. Recover ROV.

04:00 04:45 .75 3,164 Move rig off location 180m approx lIsing anchors. Detonate 90lb collision

I severance charge.4:45 05:30 .75 3.164 Move rig back onto location using anchors.5:30 06:00 .50 3.164 Jump ROV to inspect 30" stump after cutting charge detonated.

I'--"ANNOTATIONS FOR PERIOD 00:00 HRS TO 24:00 HRS ON 27.05.98

REMARK I OBSERVATION SOLUTION I RECOMMENDATION

Several times during critical moments of the dive with the Systems check of ROV asap.

I ROV when trying to manipUlate the charge towards thewellbore, the ROV tripped out. causing the ROV to fly onits last command until its is reset. This usually means the

IROV flies in circles potentialy tangling its umilical. Timeis lost due to the neccessity of clearing the umbilical andthe relocating the bomb and wellhead in very poorvisibilty.

I Mud Properties MUD COST FOR TODAY: SO CUMULATIVE MUD COST TO DATE: SO

Type: VISCOSIIY( sec Jqt ): 0 API FLUID LOSS CI· (ppm): a SOLIDS (%\101) :PV (cps): 0 (em3/30min) 0 K+ (ppm): 0 H20 (%'1101): 0.0

IFROM: A~I FILTER CAKETIME: YP (lb/100s~.tI): 0 (32ndslneh 0 HARD/Ca (ppm) : 0 OIL (%'1101): 0

WEIGHT (pPQ): 0.00 GEL 10s/10m/30m HTHP FLUID LOSS MBT (ppb sq) : 0,0 SAND:

TEMP (C): 0 (lb/100Sqft) : 0 a a (em3/30min) a PM: 0.0 PH: 0.0

FANN 3/6/100 0 0 0 HTHP FILTER CAKE0

PF: 0.0 PHPA: 0.0

I. (32nds Inch)

Anchor Tension A1 : 30.0 A2: 35.0 A3: 75.0 A4; 45,0 AS: 50.0

I(kips) A6: 40.0 A7: 75.0 AS: 0.0 A9; A10 ;

Workboats Location. Fuel Barite OJwtr PJwtr Cmt Bent Hell Weather & Rig data @ 24:00 hrs(kltr) (sx) (bbl) (bbl) (ax) (sx) (kllr) VDL (kips: 282.0

I Rig 561 2.077 2,014WIND 5P. (kls): 30.0 VI5IB.(nm) : 10 RIS.TENS: 0

P Commander 810 WIND DIR (deg) :300 CEILING (m) : 2.000 HEAVE(m ; 1.0B Tide Geelon 197 2.354 528 PRES.(mbars): 1020 WAVES(m) : 2.0 ROLL (deg : 1.2

AIR TEMP (C); 15.0 SWELL (m)' 3.5 PITCH (de): 1,0

ICOMMENTS: Anchor a lifted. 1 single. 2-7 piggied.6 PAA, on rICl.O PAX off rig. Commander at rig & Brute Tide en route rill.

Bulk Stocks Used lin Sloek Ul>ed lin Slock Used lin Stock Used J In 51pck

IDRILL WATER (bbl) :145 2,096 FUEL (bbl): 8 1.231 GEL (sx): 0 475 HELl-FUEL (ldtr) : 0,1 1P.1POT WATER (bbl): 0 1.6G8 BARITE ($X) : 0 6.173 CEMENT (sx) : 0 4.928

Drills, Permits & Inspectiom

I DRILL TYpe: DATE INSPECTIONS DATE SAFElY DETAILS

TRIP DRILL 13/5/98 BOP TEST 12/5/98 LTI 25/4/98FIRE 1715198 NEXT TEST DUE DATE MTI 12/5/98PIT DRILL 13/5/98 RIG INS~ECTION 17/4/98 JSA ongoing

I INCIDENT DAYS SINCE LTA 30 #~TW ongoingSafety Meeling 23/5/98

Copyright IDS Ply LId, RbtofB report Mar 16ln 1998.1 Page Numb r: 2

I

Premier Oil

13: 59

Report Date:

DAILY DRILLING REPORT # 54

Yo la..2

1214PAGPREMIER OIL GEELONG12135272212158

27.05.98

I 29/.1215/1998

II

570

2512321

#

MW(pPQ)

Slow PumD Oat

COMPANY NAME

PremierNorthernDowell Schlum CementAsiatic ROVDowell Schlum MudAustoil - Casing cullingRig PositioningUndersea ROVQMT

SPP SPM SPP DEPTH(psi) (psi) (m Rn

pumo nata -Isst 24 tI r5I

1 Nat. 12-P· 7.00 972 Nat 12-1'· 7.00 97

# TYPE LNR SPM EFF Flown (%) (gpm

Northern Explorer P Mcleod & Ruddleston

Pump Data

MD TVD INCL AZ CaRR. 'V' DOGLEG N/S EIW TOOL TYPE(m Rn (m RT) DEG (deg) AZ SECT (m/30m) (m) (m)

(deg) (m)

2.575 1.00 Aldrif12.660 2.00 A1drif2.661 2.00 AJdri~2.738 1.50 Ndrif2,892 2.00 AJdrif3,061 2,50 Ndrif3.147 2.20 54.5 67.1 EMS3,150 2.00 Ndrlf

LSO N,VAM Personnel: on Site =91LSO NVAMLSO N.VAM JOB TITLE NAMELSO NVAM Drlg Supervisor StirrelL80 N.VAM N. Drlg Supervisor HarrisonL80 NVAM

GRD THREAD

853 853

12.4 68.012.4 68.012.4 68.012.4 68.012.4 68.012.4 68.0

csa WT10 n Ibslft

14.911.512.3

713.43.15.5

LNGTH(m)

LOT PHASE CSG SHOE CSG SHOEMD lVD (mBRT)

TYPE

CSGODC')

13.3/8 "

ShoejthjtF/Collar )162 xjts1 xpup "A"WHjt

Casing

IIIIIe

..~:-----~~~~~~~~~~~~~

1"rSurvey

. Last Tool Typo: AidriftMagnetic Declination: 12.60I Survey method: Min Curvature

IIIt!IIIIIII

Copyright IDS Pty Ltd. RblofB report Mar 16th 1998.1 Page Numb r: 3

-- --------r-------

53

05

Y:>lIa-2

'86.044$13060,888$10108,205

P&A

PAGE

DAILY COST $ :CUMCOST$:AFE COST $ :

AFE BASIS:

13.38853

0.00

Formation Tops· This report )nlyII FORMATION ITOP mBRT) I

DAILY DRILLING REPORT ~

CUR. HOLE SIZE (");CSG 00 ("):SHOE TVD (m RT):

LEAK-OFF EMW(PP9)

PREMIER OIL GEELONG

3,164,0

0,047,13

CURRENT OP @ 0600: Moved' 80m ( 590ft) off location. Preparing to detonate culting charl e.

PLANNED OP.: Cut wftlead. Move back. over location. Jump ROV and observe w/he. d,Retrieve w/head, Move 27m over to spider beam, fish spider beam.

T.D, (m RT):PROGRESS (m):

DAYS FROM SPUD:

DAYS ;'f· CURVE:

0352722058

AustraliaBass Basin

Northem OffshoreNorthern Explorer III

Dowell ~ .l.- ......a.. +-__I

'2.5au94.0

Summary of period 00:00 to 24:00 hra:

RIH with casing cutting package. difficulties encountered landing outunable to rotate. POOH and observe lower 1.5m of cutting assemblysheared off. RIH with mill and tag 'fish'. POOH. M/U collision severancecharge. R/U mini-ROV

Well DataCOUNTRYFIELDDRILL CO. :RIG:

MUD CO:

RT ABOVE MSL (m) :WATER DEPTH @MSL (m) :

RT TO SEABED (m) :

I 29/05/1998 13: 59

-I Premier OilI Report Date: 26.05.98

IIIII CTIVITY FOR PERIOD 00:00 HRS TO 24:00 HRS ON 26.05.98

ROM TO HRS DEPTH ACTIVITY DESCRIPTION

I

.759.00

2.25

1.75.50.25

19:15 21:30

09:30 10:1510:15 19:15

21:30 23:1523:15 23:4523:45 24:00

IIII ACTIVITY FOR PERIOD 00:00 HRS TO 06:00 HRS ON 00.00.0000

FROM TO HRS IDEPTH ACTIVITY DESCRIPTION

'-00:00 01 :00 1.00 3,164 Re-dressed csg Cutter to re-cut 13 3/8"csg. Installed 26" stop ring. M/U BH;

I with 8" collars and bumper sub. RIH - guide tool in with ROV.01 :00 01 :30 .50 3.164 Cutting tool standing up 2m from landing the stop ring. Attempt to rotate jntc hole

- erratic torque( 5k -16k ft-Ibs) at >10rpm. Under 10rpm able to land stop rin~ butas soon as increase rpm· string stalls.

I 01 :30 02:30 1.00 3,164 Pull back until pipe free (free rot torq 3kft-lbs). Slide back land stop ring. AttE mptto rotate· no success( TDS stalled,> 16k ft·lbs torque ). Work either rotation orslide with no progress. Still unable to rotate when stop ring landed.

I02:30 02:45 .25 3,164 Pull tool above wellhead and inspect with ROV. All tool joints and the 11 3/4'

cutting assembly have had the paint scraped off.02:45 04:00 1.25 3,164 Continue to attempt to rotate into hole - erratic torque( TDS stalled at> 18k -

Ibs) no progress. Slide tool in and land out stop ring. Attempt to rotate· no

I success. Repeat sliding or rotating· with no success.04:00 05:30 1.50 3,164 POOH with cutting assembly. Observe 11 3/4" body below knives sheared o~ (

1.5m) and only one knife, also sheared/WOrn remaining. Layout tools.

I05:30 06:00 .50 3.164 Assess situation while servicing TOS/swivel. ROV reported gyro failure and

consequent tangling/damage to umbilical. PUlled ROV to suface.06:00 07:00 1.00 3,164 Repaired Universal Guide frame· straightened arms.

7:00 07;45 .75 3,164 MU 12 1/4" Flat Bottomed Mill assy & ran down to WHo17:45 09:30 1.75 3,164 Entered WH blind with 12 1/4" Mill. Ran into WH & stood up on top of fish @ 95.

........ ... 94m BRT (4.64m below WH). Set down 20K - no movement. Discussed situ ~tion

& operations with Premier Oil. Geelong.3,164 Pulled 12 1/4" Mill back to RT & I/out mill.3,164 Changed out leaking washpipe packing &changed out TDS leaking IBOP wt He

waiting for ROV repairs, Mini-ROV to arrive on rig & answer from Northern re:safe distance to move rig off location in order to use explosives on WHo

3,164 Make up 90lb collision severence charge for cutting wellhead. P. Commanderstart retrieving anchor #8 to allow the rig to move off location the required 11 pm(375ft).

3,164 Rig up mini-ROV in moonpool area.3,164 Run in with charge observing with mini-ROV.3.164 Suspend charge while adjusting rig postion with anchor winches in order to s ab

charge into w/head.

ANNOTATIONS FOR PERIOD 00:00 HRS TO 24:00 HRS ON 26.05.98

REMARK / OBSERVATION SOLUTION 1RECOMMENDATION

ROV located moonpool beam on seabed 27m away from Fabricate hook & sling for recovery of beam on DP.Wellhead.

III

Copyright IDS Pty Ltd. RblofB report Mar 16th 1998.1 Page Number 1

-

I 2910511998 13:59 0352722058 PREMIER OIL GEELONG PAGE 05

I Premier Oil DAILY DRILLING REPORT 53

I Report Date: 26.05.98 y olla-2


I Observed #8 Anchor Buoy missing - possibly sunk. Retrieved with grapple.

Mud Properties MUD COST ':OR TODAY: SO CUMULATIVE MUD COST TO DATE: $0

I Type: VISCOSITY( liec I ql ): 0 API FLUID 1.055 CI- (ppm): 0 SOLIDS (%vol):PV (cps): 0 (cm3130min) 0 K+ (ppm): 0 H20 (%vol): 0,0

FROM: API FJLTER CAKETIME: YP (Ib/100sq.ft); 0 (32nds Inch 0 HARD/Ca (ppm) : 0 OIL (%vol): 0

WEIGHT (ppg): 0.00 GEL 10s/10mJ30m HTHP FLUID LOSS MeT (ppb eq) : 0,0 SAND:

I TEMP (C): 0 (fbI' 003qft) : 0 0 0 (cm3J30min) 0 PM: 0.0 PH 0.0FANN 3/6/100 0 0 0 HTHP FILTER CAKE PF: 0.0 PHPA: 00(32nds inch) 0

I Anchor Tension A1 : 60.0 A2: 60.0 A3: 70,0 A4: 80.0 A5:'10.0(kips) A6: 60.0 A7: 90.0 A8: 10.0 A9 A'O'

IWorkboats Location. Fuel Barite DIWtr P/wtr Cml 8enl Hell Weather & Rig data @ 24:00 hrs

(kllr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VOL (kips: 282.0

2,077 2,045WIND SP. (Ids) : 15.0 VISIB.(nm) : 10 RIS.TENS: 0

, Commander Rig 566 810 WIND DIR (deg) :340 CEILING (m) :2,500 HEAVE (m : 1.5- 'STide Gl!leJon 191 2,354 528 PRES/mbars): 1025 WAVES (m): 1.5 ROLL (deg . 10

I AIR TEMP (e): 13.0 SWELL (m): .7 PITCH (de): 0.5

[C~MM~NXS : All anchors pl99ied.1 1 PAX on rlg,1 0 PAX off rig. Commander al rig & 8rute Tide en roule GeeronQ.~-

_w

I Bulk Stocks Used lin Slock Used I In Stock Used /In Stock Used lin St ckDRILL WATER (bbJ) :57 2.240 FUEL (bbl): 10 1,239 GEL (sx:) : 0 475 HEll-FUEL (kltr) : 0,0 12POT WATER (bbl) : 0 1,504 BARITE (sx) ; 0 6,173 CEMENT (sx) ; 0 4,928

I Drills, Permits & InspectlonEDRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

ITRIP DRILL 13/5/98 BOP TEST 12/5/98 LTI 25/4198FIRE 17/5198 NEXT TEST DUE DATE MTI 12/5!l~8

PIT DRILL 13/5/98 RIG INSPECTION 1714198 JSA ongoingINCIDENT DAYS SINCE LTA 30 #PTW ongoing

Safety Meeling 23/5/98

I Casing Pump DataCSG L.OT PHASE CSGSHOE CSG SHOE PumD Data ·last·24 hrs Slow 'umDOa00(") MD TVD (mBRD # TYPE LNR SPM EFF Flow Spp SPM SPP DEPTH MW

I 13.3/8 " 853 853 (al (%) (gpm (psI) (psi) (mRT) (pPQ)

1 Net. 12-P· 7.00 97TYPE LNGTH CSG wr GRD THREAD 2 Nat. 12-P· 7.00 97

(m) 10 C') Ibs/fl

I Shoe it 14.9 12.4 68.0 L80 N.VAM Personnel: on Site:: 85, x]t l' .5 12.4 68.0 LBO NVAMFIColiar )1 12.3 12.4 68.0 L80 N,VAM JOB TITLE NAME COMPANY NAME #62 x)ts 713.4 12,4 68.0 L80 N,VAM Oris; Supervisor Stirrel Premier 4

I 1 x pup "A" 3.1 12.4 68.0 L80 N.VAM N. Drl9 Supervisor Harrison Northern 68WHjt 5.5 12.4 68.0 L80 NVAM Dowell Schlum Cement 2

Asiatic ROV 3Dowell Schlum Mud ,

I Northern Explorer P Mcleod &Ruddleslon Austoil - Casing cut1lng 2Rig Positioning 3Undersea ROV 2

III

CopyrighllDS Ply Ltd, RblofB report Mar 16th 1998.1 Page Number: 2

I

I 29/05/1998 13:59 0352722058 PREMIER OIL GEELONG PAGE 07

I Premier Oil CAlLY DRILLING REPORT # 53

I Report Date: 26.05.98 Yc lIa-2

Survey MD TVD INCL AZ. CORR. 'V' DOGLEG N/S ENV TOO TYPE

I Last Tool Type: Aidrift (m RT) (m RT) DEG (deg) AZ SECT (mI30m) (m) (m)(deg) (m)

Magnetic Declination; 12.60 2,575 1.00 Aldrlf

Survey method: Min Curvature 2,660 2.00 A1drlf

I2.661 2.00 A1drif2,738 1.50 Ndrjf2,892 2.00 A1drif3,061 2.50 Aldrif3.147 2.20 545 67.1 EMS

I 3.150 2.00 A1drlf

IIe

-_.

IIIII~

IIIIII

Copyright IDS Ply ltd, RbtofB repon Mar 16th 1998.1 Page Number: 3

I

08

350300

CAlLY DRILLING REPORT

WT:!lL-HEAD (4.6%)

I~O 200Total time in hrs

PREMIER OIL GEELONG

. NIPPLE tJlD ANO TEST (7.S~~)

100

DRILLING CEMENT (0.2%)PRl!SSURE TEST (0.2'l'o)SUll.VEY (0.2%)\liElL CONTAOL. (0.1%)CIRCUI...HE CASING (0.2%)

I -SLIP/CUT Ol<llL tIM: (0.2%)HEAD Ui' FOR CEMENTING OPS (O.l%)TRlp.IN TIGHT (O.l?!'). RIG·UP TO RUN CSO (0.4%)

CORING (O,S%)rREAMIWASH (0.6%)

Ir-CE~lENT CASINO (0.6%)-W1P£l< TRIP (Q.7%)

r; IUG SERVICE (1.0%)i ' . rCE~lENT ABANDOl't'MENTJl(jQ:; (1.0%)

I II;!-\li.~TONOTHU(I.:%)rClRCULATE sA....Ple (15%)

. / /-OIUl.LFL.OAT 6< SHOE TMCK (1.6%),,-RIGREPAIR (1.7%)

,·-RIG MOVE (THE RIG)(2.1%),-R\JN C",SING (:.2%)

-llANDLE TOOLS (U%)

Cl1.CULATE &. CONDITlON MUD (2,7%)

- .... .o.IT ON WE"nreR (l.O%)

Productive time by Operation

so

0.00 Total prod. time since spud (hrs)Total Trouble time since spud (hrs)

1,240.25 %Trouble time

o

035272205813:59

~U~~I~~~~~~~~~~~~~~J)TI[5lR\JN I RnV ANCHORS 8251lUP.1N 77.is:

SOP· N[PPLE UID i.ND TEST 72.7S .LOGGING 71TlUP-OUT 65.25

WELl.HEAD 44.5WAlTONWCATHEA 29

ClRCULATEI<CONOITIONMUD ~-- 26.5H.'I.NOLE TOOLS 21.5

RUN CASING 21JUGMOVC(THERIG) 20.75

RIG REPAIR 16.25DIUl.t FLOAT &: SHOE. 1ll.ACK 15.5

CIRCtJt"'TE SAMPLE 15..,AlT ON OTHEk 12

CEMENT A.8AJ'/DONMENTilUCK _ 10RIOSERVTCE 9.75

WIPER TR!.p 6.75CEMENT CASING _ 6.25

lUW-t'W."SH 5.SCOW<G, .5

Rl<HIP TO RUN CSG 4nIP.I:N TIGHT 3

HE"O UP FOR CEMVmJo/G OPS 2.75SUP/CUT DRILL UNE 2CIRCULATE C"SINO I.75

W2L.LCONTROL I.SSURVEY 1.5

PRESSUIU! TEST 1.5DRILLING CEMeNT 1.5

U!AJ(.OPF TEST InIP-QtiT TIGHT .75I!~RCIS&iDRlLL .25

B.Rl!AI< CIIl.ClILATION _ .25 --+---+---+----'r---~-~---t---__+--+__-+,--+_---+--

250

Report Date: 26.05.98

DRILLING AHEAD (32.5%)-

Total move time (hrs)Total time on well

Premier Oil

I

III

I

IIIIIIIIIII

I 29/£15/1998

ICopyright IDS Pry Ltd, RbtofB report Mar 16th 1995.1

IPage Number: 4

09

1 0

PAG

Page Number: 5

10080

WIPER TRIP (8.8%)

\'-RIG REPAIR (12.5%)


Yo la-2

60Total time in hrs

PREMIER OIL GEELONG

40

rCIRCULAT£ & CONDITION MUD (0.2%)Ir HANDLE TOOLS (0.2%)i -REAMI\VASH (0.3%)

CEMENT CASING (0.3%)

~DRILUNGAHEAD (0.4%)LAY DOV.'N PIPE (0,5%)

-RUN CASING (0.5%)~.r~PRESSUR.ETEST (06%)i II r r TRlP•IN (0.8%)!,! i: TRIP·OUT (1.6%):jl j Ir--WORK TIGHT HOLE (U%)

i i.-BOP: NIPPLE UID .<\ND TEST (2,2%)-<r-'t1IELt-HEAD (2.6%)

,~~';:1J::~' \::-=:(:'2:)\

NPT by Operation

20o

• __ 16.5_._13.25

RUN J RTRV ANCHORS (I5.3%)---!

0352722058

26.05.98

13:59

w.....:rr ON WEATHER (40.4%)

WAIT ON WEATHER l:::::::::~iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiII0i08!1RUN I RTRV ANCHORS 1 41

RIGREPAIR ~:::::~~WIPER TRIP ] 23.5

LOGGING

REPAIR OTHER

WELL.HEAD~ 7

BOP: NIPPLE UiD AND TEST i 6......ORK TlOHT HOLE 4.75

TRIP.OUT 4.25

TRIP-IN f2.25

PRESSURE TEST 1.5

RUN CASING 125

LAY DOWN PIPE I 1.25

DRILLING AHEAD ] I

CEMENT CASING .75

REAMiVlASH .75

HANDLE TOOLS ..5

CIRCULATE & CONDITION MUD +-5_--+-_--+-_-.., f--_-I-__-+__;..-_--I-_---.__ +--+----1

Copyright IDS Pty Ltd. Rbtof6 repor1 Mar 16th 1998.1

Report Date:

Premier Oil

\.

IIII,III

I 29/05/1998

IIIIIIII,IIII

I 29/05/1998 13: 59 0352722058 PREMIER OIL GEELONG PA E 10

Planne

Actual

Page Number: 6

6050

CAlLY DRILLING REPORT # 53

Y lIa-2

4030Days Since Spud

20

o.,---,---------r=1o=e=p=th'""l-c-u-m-o-a-y-s1:::::::::A:ct:,v:,t:,e:s::::::::

-3500 ~r--~_.j----f-------+---+----+---'--~-+-----+-_.o 10

·3000

·1000 .

E.~ -1500o::iE-.l::a.~19 ·2000o~

IIIIII

Copyright IDS Ply Ltd, RbtofS report Mar 16th 1998.1

I


DEPTH @ 24:00 = 3,164.0 m after 47.13 days since spud

I Days versus Depth

IIIIIIIII

00:00 01:00 1.00 3,164 Re-dressed csg Cutter to re-cut 13 3/8"csg. Installed 26" stop ring. M/U BH,I' with8" collars and bumper sub. RIH - gUide tool in with ROV.

Summary of period 00:00 to 24:00 hrs: Formation Tops - This report )nly

WOW. ROV-inspect WHo Run & latch CART in WH-attempt to pull WH(no I FORMATION ITOP mBRDsuccess) Ran cutter assy. Attempt to cut 30"csg.

11

5267,529$12,874,844$10,108,205

P&A

PAG

Page Numbe ,

DAILY COST $ :CUM COSTS:AFE COST S :AFE BASIS:

13.38

8530.00

DAILY DRILLING REPORT tI 52

Yolla-2

CUR. HOLE SIZE ("):CSG 00 ("):

SHOE TVD (m RT):

LEAK-OFF EMW(ppg)

PREMIER OIL GEELONG

3,164.0

0.046.13

CURRENT OP @ 0600; M/U 121/4" mil/.

PLANNED OP.: RIH with 12 1/4" mill and tag fish to establish max depth for explosive cutter.


DAYS FROM S~UD:

DAYS +1- CURVE:

0352722058

AustraliaBass Basin

Northern OffshoreNorthern Explorer III

Dowell 1------------1.----------1.-------+--112.581.594.0

0:00 02:30 2.50 3,164 Cont WOW. Pick up lower casing cutting assembly and change out knives c ndfunction test. Pack marine swivel with grease and fix stop ring onto cuttingassembly. M/U CAR.T. and fix guide frame on below rotary table

3,164 Cont WOW. Wait to jump ROV to inspect wellhead for debris and guide CARTinto wellhead.

3,164 Weather & sea conditions continually improving. Jumped ROV to inspect WH &identify whereabouts of moonpool beam on seabed.

3,164 ROV inspected lock pins on guide posts #1 & 3 secure. Unable to locatemoonpool beam on seabed.

3,164 Ran CART on HWDP down to WHo Attempted to enter WH with CART ~ Cartsitting at an angle in WH & not fully entering. ROV observed slight lateralmovement of the WH/PGB.

3,164 RU tugger around drillstring in moonpool. Pulled drillstring over to stbd/aft inorder to enter WH with CART. Observed slight lateral movement of WH/PG~when drillstring pulled over. Latched WH with CART with 2 112LH turns.

3,164 Commenced pumping at 635gpm. Commenced pUlling on WH/cut csg with650Klbs max o/pull - no movement observed, unable to pull WH & cut esg fee.

3,164 Backed out CART from WH with 2 1/2RH turns & pulled back to RT. UoutCART.

3,164 MU 30"csg cutting assy clw DC's, Bumper Sub & Universal Guide. Ran down toWH on HWDP.

3,164 Worked cutter & swivel assy into WH - indications of junk preventing entry.Landed out with swivel & closed Bumper Sub to mid stroke.

3,164 With cutter blades on depth, attempted to rotate without pumping with cutterblades closed - no success with 18K ft-Ibs, string stalling possibly on junk orripped csg. Rotated &worked cutter up/down to establish rotation.

3,164 Positioned cutters on depth with swivel bottomed out. Commenced cutting30"Cond with 80rpm, 5-16K ft-Ibs, 290gpm, 700psi - obs'd WH rocking whilEcutting, string jamming & stalling out continuously. Obs'd PGB turn fractiona Iy.

3,164 Unable to make further cut - string continuously stalling with 18K ft-Ibs. Pulle dcutter assy back to RT - observed stop ring sheared free & hanging loose & 1 xcutter blade sheared off. Uout cutter assy.

3,164 MU CART & ran down to WH on HWDP. Entered WH & latched CART with 41/2LH turns.

3.164 Commenced attempting to PUll WHicut esg tree· no success with repeated650K lbs o/pulls.

3,164 Backed out CART from WH with 4 1/2RH turns & pulled CART back to RT. UoutCART.

3,164 Re-dressed csg Cutter to re~cut 13 3/8"csg. Spaced out assy.

13:45 14:45 1.00

14:45 15:45 1.00

15:45 17:00 1.25

17:00 17:30 .50

17:30 18:45 1.25

18:45 24:00 5.25




ACTIVITY FOR PERroO 00:00 HRS TO 24:00 HRS ON 25.05.98

Well DataCOUNTRYFIELDORILL CO.:RIG:

MUD CO:

RT ABOVE IVISL (m) :WATER DEPTH@MSL(m):RT TO SEABED (m) :


Copyright IDS Ply Ltd. RblofB report Mar 16th 1998.1

Premier Oil

_.02:30 07:15 4.75

07:30 08:15 .75

08:15 08:30 .25

08:30 09:00 .50

09:00 09:30 .50

09:30 10:00 .50

10;00 10:45 .75

10:45 13:15 2.50

13:15 13:30 .25'--

13:30 13:45 .25

IIIIIII

I 29/05/1998 13: 59

IIIIIIIIIIII

0.0

0.0

0.0o

12PAGE


Yolla-2

CI - (ppm) : 0 SOLIDS (%voJ) :o K+ (ppm) : 0 H20 (%vol) :

o HARD/Ca (ppm) : 0 OIL (%\101) :MBT (ppb eq) : 0.0 SAND:

o PM: 0.0 PH:

o PF: 0,0 PHPA:

CUMULATIVE MUD COST TO DATE: $0

PREMIER OIL GEELONG

Needs to be changed out during rig move/anchorhandling.Change out IBOP during rig move/anchor handling

o API FLUID LOSSo (cm3/30min)

OAPI FILTER CAKE(32nds InchHTHP FLUID LOSS(cm3/30min)HTHP FIL.TER CAKE(32nds inch)

o 0o 0

0352722058

VISCOSITY( see I ql ):PV (cps):

YP (lb/100sq.ft):

GEL 10$/1 Om/30m(lb/100sqh) : 0

FANN 3/6/100 0

MUD COST FOR TODAY: $0

.25

0.00o

1.25

1.00

1.50

HRS DEPTH ACTIVITY DESCRIPTION

13: 59

TDS IBOP does not pressure test.Cutting toofs spaced out for cutting at S8m BRr - this is4m below the seabed in the 13 3/8" casing.On retrieval of ROV, Gyro failed and ROV tangled itself inits umbilical. As a result the gyro needs changing and theumbilical needs re-terminating, approximately 12 hourswork,

01;30 02:30

01:00 01 :30

04:00 05:30

02:30 02:45

02:45 04:00

FROM TO

.50 3,164 Cutting tool standing up 2m from landing the stop ring. Attempt to rotate intp hole- erratic torque( 5k -16k ft-lbs) at >10rpm. Under 10rpm able to land stop ri1g butas soon as increase rpm - string stalls.

3,164 Pull back until pipe free (free rot torq 3kft-lbs). Slide back land stop ring. At emptto rotate - no success( TDS stalled> 16k ft-Ibs torque ). Work either rotatior orslide with no progress. Still unable to rotate when stop ring landed.

3,164 Pull tool above wellhead and Inspect with ROV. All tool joints and the 11 3/~ "cutting assembly have had the paint scraped off.

3,164 Continue to attempt to rotate into hole - erratic torque( TDS stalled at > 18k ftIbs) no progress. Slide tool in and land out stop ring. Attempt to rotate - nosuccess. Repeat sliding or rotating - with no success.

3.164 POOH with cutting assembly. Observe 11 3/4" body below knives sheared ( ff (1.5m) and only one knife, also sheared/worn remaining. Layout tools.

05:30 06:00 .50 3,164 Assess Situation while servicing TDS/swivel. ROV reported gyro failure and. consequent tangling/damage to umbilical. Pulled ROV to suface.

Mud Properties

Type:FROM:TIME:WEIGHT (ppg):TEMP (C):

Premier OilReport Date: 25.05.98

29/05/1998

I ~NNOTATIONS FOR PERIOD 00:00 HRS TO 24:00 HRS ON 25.05.98

"-r.-' R_E_M_A_R_K_/O_BS_E_R_V_A_T_IO_N -+ S_O_LU_T_'_O_N_/_R_E_C_O_M_M_E_N_D_A_T_'O_N_-I-_~I Washpipe packing leaking with low pressure.

IIII

IIIIIII

,~nchor Tension(kips)

A1 : 75.0

A6: 60.0

A2: 70.0

A7; 95.0

A3: 70.0

AS: 70.0

A4: 800

A9:

A5: 85.0A10 :

Location. Fuel Barile DMir Plwtr Cmt Bent Hefi(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr)

Weather & Rig data @ 24:00 hrsVOL. (kips:RIS.TENS:HEAVE (m):ROLL (deg):PITCH (deg)

49,0o

0.50.81.0

Bulk Stocks Used lin Stock Used lin Stock Used lin Stock Used lin Stoe

DRILL WATER (bbl) :0 2,297 FUEL (bbl): 11 1.249 GEL (3X) : 0 475 HELI·FUEL. (kltr) :00 10.POT WATER (bbl): 0 1,397 BARITE (sx) : 0 6,173 CEMENT (sx) 0 4.928

DRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

Page Number: 2

I TRIP DRILL 13/5/98 BOP TEST 12/5198 LTI 25/4/98FIRE 1115/98 NEXT TEST DUE DATE MTI 121S/98PIT DRILL 13/5198 RIG INSP~CTION 1114/98 JSA ongoingINCIDENT DAYS SINCE LTA 28 #PTW ongoing

1l:::=======================:::::==::;;:;===========s=a~=e=ty=M=e;:;et;:ln=g=====2=3::/5=19:::8==================:f=:;:,jCopyright IDS Pty Ltd, RbtofB report Mar 16th 1998.1

I

1~=====-:===~=::;::=~=~===--.,11f 1 NaI.12-P· 7.00 97TYPE LNGTH CSG WT GRD THREAD 2 Nat. 1Z-P· 7.00 97

( m ) 10 (00) Ibs/ft

MO TVD INCL AZ CORR. 'V DOGLEG N/S EfW TOC L TYPE(m RT) (mRT) DEG (deg) AZ SECT (mJ30m) (m) (m)

(deg) (m)

2,575 1.00 Aldri~2,660 2.00 A1dri2.661 2.00 Afdri2,738 1.50 AJdr"2,892 2.00 AJdri3,061 250 Ndri3,147 2.20 54,5 67.1 EMS3,150 2.00 Ndri

Copyright IDS pty Ltd, RbtofB report Mar 16th 1998.1

PAGE 13

Page Number: 3

Slow Puma 0 taSPP SPM SPP DEPT MW(psi) (psi) (m Rr, (ppg)

CAlLY DRILLING REPORT ~ 52

Yplla-2

pumn Data. - la,:1 24 hrs

PREMIER OIL GEELONG

# TYPE LNR SPM EFF Flow(00) ('Yo) (gpm

Northern Explorer P Mcleod & Ruddleston

Pump Data

N.vAM Personnel: on Site =84N.vAMIIIr-------,r-------,---------f-r--,N.VAM 11I1-_-.;J....:O....:B_T_IT....:L;.::E_-+__..:..N.:..A..;.;M.;.;:E'--_-+_....:C'-O....:M....:P_A..:..N....:'f_N_A_M_E_+-+_#~

N.vAM Drlg Supervisor Stirret Premier 4N.vAM N. Drlg Supervisor Harrison Northern 70N.VAM Dowell Schlum Cement 2

Asiatic ROV 3Dowell Sehlum Mud 1Tasman - Casing cutting 1Rig Positioning 3

853

LSOLSOLSOLSOLSOL80

CSGSHOETVD (mBRT)

853

68068.068.068.068.068.0

0352722058

14.9 12.411.5 12.412.3 12.4

713.4 12.43.1 12.45.5 '2.4

LOT PHASE CSG SHOEMD

urvey

13.3/8 00

ShoejthjtF/ColJarjt62 xjls1 x pup UAU

WHjt

CasinQCSG00(00)

II 29/05/1998 13:59


IIIII

__ ...ast Tool Type: Aidrift

I Magnetic Declination: 12.60Survey method: Min Curvature

IIII~IIIIIII

14

TW,OUT(6.9%)

CAlLY DRILLING REPORT 52

Y lIa-2

PRE/vilER OIL GEELONG

Total prod. time since spud (hrs)Total Trouble time since spud (hrs)% Trouble time

DIULLlJI/G CEMENT (0.2%)PkfSSURE TEST (0.2%)SURVEY (0,2%)

-WELL CONTROL (0.2%)ClRCUl....TE C"'SING (0.20/.)SLIP/CUT DIULL LINE (".:%)

rr

-HEAD uP PO~ CEMENTING OPS (O.J%).....TJUP.rr; TIGHT (0.3%)rPJo-UP TO RUN eSG (O.~%)

rCORING (O~%)

II rREAM/W,.SH (0.6%)

II ~Cl!MEi"T CASING (O.7%), I -IUGAEPAlR(O.7%}I~I -WIPERTIUP (0.7%),'I' I I-lUG SERVICE (IO¥.)

:, !' I rCl!MEi"T ABANDONME"ITIKICK (J.l 'It): I II .....W,r,JTONOTIiER,(l.J%)

..-ClReUL...TE S.""'oIPLE (1.6%), I-DIULL fLO...T & SHOE TRACK (16%)

~IUGMOve (THe IUO) (2.2~~)

.' -RUN CASING (2.2"")

HANDLE TOOLS [2.J~)

-Cll\CUl....TE & COI"DITION MUD (2.9%)

WAlT~ ....'EA1HEJt. (3.1%)

0.00

Productive time by Operation

1,216.25

0352722058

RUN I RTIlV .-\NCHORS (!.?o/.)....I'

DIULUNG AHEAD (3).'0/,)-,.

DIULLINGAHEAD 1~~~----_----_....-mJ16l.3\Rt!l'l I RTllY .V/CHORS 82.5TRIP-IN 77.75:

BOP: MPPLE UIO AND TEST 72.75 .LOOOINCi 71TRIP·OUT 65.2S

WELl-HEAl) 30.5WAIT ON WEATHER 29

CIRCUlA'IT&CONDITIONMUD -I!!"'-- 265HNlDLE TOOL.S 21.5

RUN CA.SINO 21lUG 1>10'1/£ (THE RIC) 20.75

DRJLL fLOAT &: SHOE TRACK 15.5CIRCUlATE SAl'olPLE 15

VI,OJT ON OTHER 12Cl!MloNT A!lJI.1'lDONMENTOOCK 10

RIG SERVICE 9.75WIPER.TRJII 6.75lUG REPAIR 6.25

CEMENT C...SING 6.25R£~IJWASH 5.5

CORINC 5lUG-UP TO IlUN CSCi 4

TRll'-lJ\' nOHT 3HE...o UP POll CEMEi"TINO OPS 2.7S

S{"'~~UTDIULLL~ 2CIRCUl.ATI! CAsrr;o L 75

W2LLCONTll.OL 1.5SURVEY I.S

PRESSURE TEST 1.5DIULUNG CI2MENT 1.5

LEAK-OFF TEST IT1l.LP.OUTTIOHT .75EXERCISE/LDTlULL

ION,25 I. J

BUAKCI\l.CU A +~--l--.-I.--f··---+--+--· 'j--'''''--l-----.---,.---+----l----+---i.

o 50 100 150 200 250 300 35Total time in hrs


Total move time (hrs)Total time on well

' .......

IIIII

IIIIIIIIIIII

I 29/05/1998 13: 59

II

Copyright IDS Pty Ltd. RbtofB repoJi Mar 16th 1998.1 Page Number; 4

I a

108

Page Number: 5

100

I ----'--~-....,I

80

-WIPER TRIP (8.8%)

\~RlG REPAIR (12.5%)

DAfLY DRILLING REPORT 52

lIa-2

41

CIRCULATE & CONDITION MUD (0.2%)HANDLE TOOLS (0.2%)REAMIWASH (0.3%)CEMENT CASING (0.3%)DR1LUNGAHEAD (0. 4 %)LAY DOWN PIPE (0.5%)RUN CASING (0.5%)

r PRESSURE TEST (0.6%),TRIP.IN (08%)

TRIP-OUT (1.6%)rWORK TIGHT HOLE (1.8%)I i-SOP: NIPPLE UID AND TEST (2.2%)

:... /-WELL-HEAD (2.6%)

L~')':'''''''--REPAJROTHER (5.0%)r 41:!I:!;:< ..:'~~§~:;;:,. y-LOGGING (6.2%)

,:"'1::;';;":""- \

PREMIER OIL GEELONG 15

40 60Total time in hrs

335

235

NPT by Operation

20o

l~.25

.75

.75

.5

lS

0352722058

25.05.98

13:59

WAlTON WEATHER (40.4%)

WAIT ON WEATHER

RUN I RTRV ANCHORS

RIG REPAIR

WIPER TRIPLOGGING 16.5

REP.4J.R OTHER •••• 13.25

wELL-HEAD

BOP; NIPPLE UfO .'\NO TEST

WORK TIGHT HOLE

TRIP-oUT

TRlP·IN

PRESSURE TEST

RUN CASING

LAY DOWN PIPE

DRILLING AHEAD

CEMENT CASING

REAMIWASH

HANDLE TOOLS

CIRCULATE & CONDITION MUD

Report Date:

Copyright IDS pty Ltd. RbtofB report Mar 16th 1998.1

Premier Oil

29/05/1998

IIIIIII

IIIIIIIIIIIII

S2

lIa-2

Planne

Actual~

Page Numbor : 6

Activities

PREMIER OIL GEELONG0352722058

o...,.--.........·-----lDepth rcu~ Days I1i

-500 , , ··· ·······1

-3000- .

I

~500L-+I-----+--~I.- --+--+.-I--+---l---~--'----+---lio 10 20 30 40 50 60

Days Since Spud

.2500t..·.... ·· ..........

Days versus Depth

·1000 ...... .... "........ ...

E.~ ·1500Cl~~

Q.(I)

Cl

~ ·2000oI-

Premier Oil DAILY DRILLING REPORT


DEPTH @ 24:00 = 3,164.0 m aftel 46.13 days since spud

29/05/1998 13:59

IIIIII

Copyright IDS Pty Ltd, RbtofB report Mar 16th 19981

I

IIIIIIIIIIIII

0352722058 PREMIER OILGEELONG PAC:E 17


Yplla-2

l353.328$12607,315$10108.205

P&A

DAilY COST S :CUM COSTS'AFE COSTS:

AFE BASIS:

13.388530.00

CUR. HOLE SIZE C');CSGOD(") :

SHOE TVD (m RT):

LEAK-OFF EMW(ppg)

3.164.0

0.045.13

CURRENT OP @ 0600: WOW

PLANNED OP.: Jump ROV, Inspect wellhead for debris, attempt to pull w/head wI C} RT if nosuccess continue cutting 30" casing and retrieve wellhead.

T,D. (m RT):

PROGRESS (m):

DAYS FROM SPUD:DAYS +/- CURVE:

Australia

Bass BasinNorthern Offshore

Northern Explorer IIIDowell I-----------~ ....r_ +_--I

12.581.594.0

Well DataCOUNTRY~IELD

DRILL CO.:RIG:

MUD CO:

RT ABOVE MSL (m) :

WATER DEPTH @MSL (m) :

RT TO SEABED (m) :


WOW - Observe 2 guide posts free after moving rig back onto location.Pressure test suface system. Layout casing cutting tools· pick up HWDP.

Formation Tops - This report pnlyII FORMATION ITOP mBRT)

ACTIVITY FOR PERIOD 00:00 HRS TO 24:00 HRS ON 24.05.98FROM TO HRS DEPTH ACTIVITY DESCRIPTION

.50

5.25

0:00 18:15 18.25 3,164 Wait on weather. (see comments section). Guide post #4 came free from P 38while adjusting guidewire tensions. Pulled #4 guidepost to surface.

3,164 Cont WOW. Moved rig back over location. #2 guidepost came free whileadjusting gUidewire tensions. Pulled #2 post back to surface. Pressure testepS/Pipe & Choke Manifold v/v's SOO/SOOOpsi - repair leaks as necessary.

3,164 Cont WOW. Pressure tested TDS, Kelly Cock, Gray vlv. Observed ISOP noholding pressure. Observed leak from SWivel packing. Break out casing cuttingtools. Layout bent stand of HWDP. Pick up HWDP and rack back in derrick.

18:45 24:00


3.50

00:00 02:30 2.50 3,164 Cont WOW. Pick up lower casing cutting assembly and change out knives c ndfunction test. Pack marine swivel with grease and fix stop ring onto cuttingassembly. M/U CAR.T. and fix guide frame on below rotary table

3,164 Cont WOW. Wait to jump ROV to inspect wellhead for debris and guide CA ~T

into wellhead,


REMARK I OBSERVATION SOLUTION / RECOMMENDATION

1

0.0

0.0

0.0o

Page Number

CI - (ppm) . 0 SOLIDS (%vol) :o K+ (ppm) _ 0 H20 (%vol) -

a HARD/Ca (ppm) : 0 OIL (%vol) ;MBT (ppb eq) : 0.0 SAND:

o PM: 0.0 ~H:

I) PF: 0.0 PHPA:

CUMULATIVE MUD COST TO DATE: SO

o API FLUID LOSSa (cm3130min)

API FILTER CAKEo (32nds Inch

HTH~ FLUID LOSS(cm3/30mln)HTHP FILTER CAKE(32nds Inch}

o 0o a

VISCOSITY( sec I qt ):PV (Cps):

YP (lb/100sq.fl):

GEL 10s/10m130m(lb/100sqlt) ; 0

FANN 316/100 0

MUD COST FOR TODAY: SO

0,00o

Mud PropertIes

Type:FROM:TIME:WEIGHT (ppg):

TEMP (C):

CopyrlghllDS Ply Ltd. RbtofB report Mar 16th 1998.1

Time Wind(knts) Pitch(deg) RolI(deg)Heave(m)

,--0800 35-40 4 3 71000 35-40 3 2 61200 35-40 3 2 51400 35-40 3 2 4.71600 35-40 2 3 5Shorlty after Pacific Commander left rig it communicatedthat it had something ( possibly a fender) trapped aroundone of its propellers and that it would have to proceed ona single screw· ETA at Geelong pilot 12:00 instead of06:00.Conditions checked at 03:00 in view of launching ROV,however still not possible due to weather :- 28-33knotwinds, @ 180deg, directly on Port beam ( side the ROVis launched from) with 3.5-4m swells.

IIIIIII

I 29/05/1998 13: 59 0352722058 PREMIER OIL GEELONG PAGE 18

470

23113

#

VDL (kips: 430.0RIS.TENS: 0HEAVE (m: 1.0ROLL (deg: 1.0PITCH (de ): 2.0

A5: 75.0

Al0 :

SlowPumc 08

COMPANY NAME

SPP SPM SPP DEPTH MW(psi) (psi) (m RT) (ppg)

A4: 65.0

A9:

DAILY DRILLING REPORT ~~ 51

Yplla-2

Weather & Rig data @ 24:00 hrs

WIND SF'. (kts) : 28.0 VISI6.(nm): 10WIND DIR (deg) :185 CEILING (m) : 2,400PRES.(mbars); 1017 WAVES (m) : 4.8AIR TEMP (Cl: 12.5 SWELL (m): 1,1

A3: 70.0

AS: 80.0

Pumo Dsts • last 24 hrs

810

# TYPE LNR SPM eFF Flow(") (%) (Qpm

DATE SAFETY DETAILS

12/5198 LTI 25/4/98MTI 12/M/S

17/4/98 JSA ongoing27 #PTW ongoing

Safety Meeting 23/5/98

Pump Data

A2: 65.0

A1: 100.0

MD TVD INCl A2. CORR, 'V DOGLEG N/S Em TOOL TYPE(mRT) (m RT) DEG (deg) AI. SECT (m/30m) (m) (m)

(deg) (m)

2,515 1.00 Aid rift2.660 2.00 Aidrift2.661 2.00 Aldrifl2,738 1.50 Aidri ft2,892 2.00 AJdrift3.061 2.50 Aldrin3,147 2.20 54.S 67.1 EMS3,150 2.00 Aldrin

2,202 1,7622,354 528

INSPECTIONS

853 853

SB.O L80 N.VAM Personnel: on Site = 8468.0 LSO N.VAM68.0 LSD NVAM JOB TITLE NAME68.0 L80 NVAM Drlg Supervisor Stirret68.0 LSO N.VAM N. Drlg Supervi:;or Harrison68.0 LSO N,VAM

A1 : 50.0

A6: 50.0

BOP TESTNEXT TEST DUE DATERIG INSPECTIONDAYS SINCe LTA

592197

24.05.98

PHASE CSG SHOE CSG SHOEMD ND (mBRT)

GeelonRig

Location. Fuel Barile Dlwtr P/wtr Cmt Bent Heli(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr)

=~II anchors piggied. 0 PAX on rig, 0 PAX off rill' Commander en route Geelong & Brute Tide at rig. _

LOT

DRILL TYPE DATE

CSG00(")

13.3/8 "

TYPE LNGTH CSG(m) IDO

Shoejt 149 12.41 xJt 11.5 12.4F/Coliar Jt 12.3 12.452 xJts 713.4 12.41 x pup "A" 3.1 12.4WHJt 5.5 12.4

TRIP DRILL 13/5/98FIRE 17/5/98PIT DRILL 13/5/98INCIDENT

PCommanderB Tide

Casina

Workboats


ICOMMENTS:

Bulk Stocks Used /In Stock Used lin Slock Used lin Stock Used lin 5t cJe;

DRILL WATER (bbl) : 37 2.297 FUEL (bbl): 14 1,260 GEL (sx) : 0 475 HELI·FUEL (kltr) ; 00 1 .6POT WATeR (bbl): 0 1,290 BARITE (sx): 0 6.173 CEMENT (sx) ; 0 4,928

Drills, Permits & Inspection~

Report Date:

Premier Oil

PremierNorthernDowell Schlum CementAsiatic ROVDowell Schlum Mud

Northern Explorer P Mcleod & Ruddleston Tasman· Casing cutting• Rig Positioning

.::~.----.===~~~~~~~Survey

Last Tool Type: Aldrlft

Magnetic Declination: 12.60Survey method: Min Curvature

IIII

I

IIIIIIII

III

III

Copyright IDS Ply Ltd. RbtofB report Mar 16th 1998.' Page Number; 2

I 23/05/1 9~8 10: 53 0352722058 PREMIER OIL GEELONG PA E 01/02

Please find attached the Daily Drilling summary report for 22tl1S May 1998.

Gordon Hunter


D Please Recy~le

..._. -..,<. •

t..\~lkr\· ~:DR\LL\N~i ... '

cc:

Pages:

Date: May 23, 1998

From: Gordon Hunter



80ral Energy Resources. Attn: A. Guthrie. Ross Naumann


Santos Ltd.. Attn: Neil Tupper

CalEnergy. Attn; John Treen

Cue Resources. Attn: Andrew Adams



•Comments:

Re:

Phone:

Fax:

D Urgent

To:

Premier Oil AustralasiaGeelong Operations BasePhone: 0352722101Fax: 0352722058

Regards

C·&~

Fax


24 hr SUMMARY; Cut 13 3/8" casing. Attempt to cut 30" casing - bumper sub washed out. Continue to cut.

STATUS AT 0600: WOW

After storm abates finish cutting 30" casing and retrieve wellhead.


·'i·.·,i: .:. ~ :;~:!~~,:::::'.~~~~\::>::; ~"~:i .:'::<".':'.·C::·::;";;;~~$~tJPN: .:~.,i' :.... '." :'::<F=~<~:O;::.:::~:';:<:

Ahmed Nadji Minerals & Petroleum I 0394125152Andrew Adams Cue Energy Resource: 0396297318Angus Guthrie Boral Energy Resourcl 0882231851Carol Bacon Mineral Resource Tasl 0362338338John Treen CalEnergy 0011441712081620Neil Tupper Santos Ltd. 0882247765Ross Naumann Boral 0733697840

PAC;E 02/02

HOLE SIZE (") :

DIFF. AFE-CUM :($1,978341)

REP. DATE: 22.05.98

DAYS FROM SPUD 43.1~ DAYS +/- CURVE:

AFE: $10,108,205

PREMIER OIL GEELONG

RIG: Northern Explorer III

REP. NUMBER :49

CUM :$12.086,54!

0352722058

$175.536

Copyright IDS. Nov 1997

Report Distribution List

I 23/05/1998 10: 53

II

!IIII WELL: Yolla-2

I DRILLING CO.: Northern Offshore

DEPTH (m): 3,164.00 PROGRESS (m) 0.00

II PLANNED OP :

COST DATAI DAILY

III_IIIIIII


,:': ::~":;;:::::T':;-:,:~~;~~M.E(;;::>,:,," .. ':::::1:::' "::~Q¢l\.ijIPI\f::':.:,:,: O::,:';F;A:>(13J$<>::,>::;t:,Ahmed Nadji Minerals & Petroleum 10394125152Andrew Adams Cue Energy Resource! 0396297318Angus Guthrie Boral Energy ResourCE 0882231851Carol Bacon Mineral Resource Tasl 0362338338John Treen CalEnergy 0011441712081620Neil Tupper Santos Ltd. 0882247765Ross Naumann Boral 0733697840

After storm abates finish cutting 30" casing and retrieve wellhead.


PA<:E 01/01

HOLE SIZE (") :

DAYS +/- CURVE:

DIFF. AFE-CUM :($2,145.782)

REP. DATE : 23.05.9~

DAYS FROM SPUD !$4.1~

AFE: $10,108.205

PREMIER OIL GEELONG


REP. NUMBER :50

CUM : $12.253.98~

PROGRESS (m) I:J.OO

0352722058

$167,441

3,164.00

Northern OffshoreDRILLING CO.:

DEPTH (m):


I 24~5/19;l8 11 : 29

II

! IIII WELL: Yolla-2

II 24 hr SUMMARY: WOW

STATUS AT 0600 : WOW

I PLANNED OP :

COST DATAI DAILY:

III_IIIIIII

4~·

r. a

Telephone .61894 4100Facsimil. ·61893 41212Emlil Cpr.micraus cOtTl.au

2 0 MAY i998

'.

White This-l

39°57' 49.61" S1450 15' 17.28" E

RECORDS

~~ &~\\Fiie NoY~.n~~ ..I~!.~)

·VI W ''''''~IW'''I

Yolla-2

39° 51' 33.82" S145(148' 38.53" E

Lat:Long:

Subject to Petroleum (Submerged Lands) Act clause 302 (1) Premier Oil hereby apply forapproval under Navigation Act 1912 to move our mobile platfonn Northern Explorer lIi fr rnour T/RLI permit to the T/18P permit.

20 May 1998

Dear Carol

In accordance with P(SL)A clause 302 (7) when the mobile platfoml has arrived at thislocation tile actuul time of arrival shall be reported to yourself and the Federal Sea Safety dSurveillance Centre in Canberra.

Premier pi! Australasia look forward to receiving approval to move the Northern Explorer IIIto our White Ibis·l well in Tasmanian waters.

YOUTS sincerely

The White Ibis-l well is expected to take 20 days to drill after which the mobile platfonneither move to a third location or will be demobilised out of the area.

The Northern Explorer III DriJlship is expected to depart our Yolla-2 well location and moveto the White Ibis location on 23 May 1998. Coordinates for the two locations are as folIo 'S:

Carol Bacon .Managing Geologist Hydrocarbons & TenementsMineral Resources Tasmania30 Gordons Hill RoadRosny ParkTASMANIA 7018

Premier 011 Australia Pty Umit.d .(.ACN 0756/)9728)

'~~m~l_i~'_.· . ~~~:~;~~t~7:0A 1649)':;·:-"'>RremierOil

Australas,ia ;'REF: Rc07SIWIB I.OIIY0L2.0S/BMU/jsCIRC:

IIIIIII

••IIIIIt'IIIIIII

RECORDS

File NO\\~.b.bA ...0.......

"'-:.

an~i~. ~I\ l\~hh-(-\ ~ ?TJ 8AVB037.

Yours sincerely

Dr A V (Tony) BrownDIRECTORMINERAL RESOURCES TASMANIA

Please provide the result of the seabed survey of the wellhead area as soon as it becom savailable.

YOLLA-2 (T-RUl) PERMANENT PLUG AND ABANDONMENT

L _

I refer to your facsimile dated 18 May 1998 regarding the above subject.

Mr A GuthrieManager, Bass Basin AssetsBoral Energy Resources LtdGPO Box 2576ADELAIDE SA 5001

Dear Mr Guthrie

Under the provisions of Clauses 513 and 514 of the Petroleum (Submerged Lands) Ac,Schedule of Specific Requirements as to Offshore Petroleum Exploration and Production iWaters Under Commonwealth Jurisdiction 1997, I hereby approve the pennanent plugginand abandoning of the appraisal well Yolla-2 in TIRL-l to be carried out in accordance witprocedure outlined in your proposed programme.

19 May 1998

Enquiries: Tony BrownPhone: (03) 6233 8365Your Ref:Our File: 8AVB037.DOC:NW

~

IIIIIIIeIIIIItIIIIIII

Please find attached the proposed abandonment programme for Yolla 2 well Bass Straits.Petrophysical logging is nearing completion and based on results so far, PremIer PetrOleum AustraliaLtd. and partners do not intend to conduct any further evaluation.

01

D Pl•••• Rec:ycle

Blaine Ulmer

Ahmed Nadji

18thMay 1998

Premier PetroleumAustralia Ltd.

From:

Dat.:

Pages:

cc:

o Pl•••• Reply

05/19 198 09:00 NO.434

D Pl•••• Comm.nt

+61 8 93241851

D ForR.vlew

~anager .

Yolla 2 - Abandonment Programme---------:---------------1----

Tony Browne I Carol Bacon

Fax:

Phone:

Re:

To:

Premier Petroleum Australia Ltd.Geelong Operations BasePhone: 0352722101Fax: 0352722058

D Urgent

-Comments:

Assuming your agreement and approval it is our intention to move the Northern Explorer III, once theabandonment is complete, to the While Ibis well location. This move is expected to take place aroundthe 22

ndI 23

rdMay dependent on progress and weather conditions.

We look fOlWard to your earliest reply

Drilling

Fax

·PREMIER OILIIIIIIIIeIIIIIttIIIIIII

I ,PREMIER OIL +61 8 93241851 05/19 198 09:01 NO.434 02

IIIIIIIeIIIIIt'IIIIIII

YOLLA·2

ABANDONMENT PROGRAMME(OPEN HOLE WITH LOSSES TO FORMATION)

A CENI.R.A.I.t _ _ _ -- -.._.••_ ~ _ " __ _.••_.•••..••••_ _ _••_•••••.._'Z

05/18 '98 17:09 NO.419 02 02

05/19 198 09:01 NO.434 03

c~ll ~Gordon Hunter

+61 8 93241851

+61 8 93241851

~NO'33~ 110 ~3I~3~d

Pmp8rtK1 By

CONTEND

p. PLANNEP WELL STATU3 AfTER ABANDONMENT _ __ _ _ ,

A.l wnnDllCTI()l\Il Wf'J,I.S.,. TlIti " " 2.1\.2 CP),fP.NT ReC'n'p. " '" " 2A.3 PROQ86M SUMM~ "' 3

B. QPER"nONAL DET"as ~ - _ _.._ _ _ - __.._u_ _.._ "IS.! ratA CEMgNIINQ 4

B.2 RIStidQPIW't;LbHMPI.cJl',J!Y4L " 5

C. PETRQUlJM (SUBMERGED LAN1)~)ACT UOUlRtM.J:NT'S _•.._ _.._ .._ 6

Drilling Engineer

Rtyt.w.d au

Drilling 'uperintendent

Apprpvedby

Drflllng Manag.r

,...~ ,..•.~_....,,.,.......

PREMIER OIL'

I. PREMIER OIL

IIIIIIIeIIIIIitIIIIIII Za 3~t1d

PREMIER OIL +61 8 93241851 05/19 198 09:01 NO.434 04

~--

•- ~

•

• GENERALA.

• The following outlines the procedures for abandonment of the Yolla-")Appraisal well.

• A.1 Introduction I Well Status,-

•The well has been drilled to TO of 3164 m, and open hole logs ran from TC .The well has been evaluated and a decision has been made to plug amj

,- abandon the well.------ The Petroleum (Submerged Lands) Acts procedures for well abandonmer t- precede a schematic of the intended well status after abandonment (p.?).

•A.2 Cement Recipe

- Abandonment plugs

Slurry volume is to be based on the caliper log pius 20% excess. unless holE~

-- conditions indicate otherwise.~ -

.- Depth NO: 3000 m 2850 m 1900 m 600 m 92mBHST: 249 OF 241 of 188 OF 114 OF 85°F

~ - BHCT: 185°F 178 OF 138 OF 99 OF 82 OF

.-PLUG 1 PLUG 2 PLUG 3 PLUG 4 PLUG ~

-

~~ADDITIVES Units Cone. Cone. Cone. Cone. Cone.

•--.. Class G Cmt.

D604 Gal/sk 0.07 0.07 0.05 - -..- 0110 Gal/sk 0.02 0.02 0.03 - -- 0047 Gal/sk 0.01 0.01 0.01 0.01 0.01

S001- CaCI2 1% wt - - - - 1.0w-Drill Water Gal/sk 4.97 4.97 4.98 5.04 -

- Seawater Gallsk 5.18. - - -.. TMF Gal/sk 5.07 5.07 5.07 5.05 5.19Density kg/m3 1.9 1.9 15.8 1.9 1.9- Yield felsk 1.15 1.15 1.15 1.15 1.18

rr Thickening 100 129 min 140 min 140 min 160 min 175 minTime Be

~

pumping Time 40 Bc 115 min 115 min 110 min 110 min 117 minr Compressive psi 5100 5050 5080 3100 2500- Strength

.-

- 2'8 May' 998. Abandonmant Progrllrn .-

r-

•.-

I

8.1.5 M/U Bridge Plug to DP, RIH and set Bridge Plug in 340mm (13 318") casing at835 m. Release Bridge Plug, close pipe rams and pressure test plug t

10,341 kPA (1500 psi).

18 May 1998. Abandonment Program

Pull back and spot balanced cement plug from 175 m - 130 m below seabedto surface.

4

05/19 198 09:02 NO.434 06+61 8 93241851

QPERATIONAL DETAILS

RIH with a 60mm (23/8) by 45 m cement stinger to TO. Circulate hole clean.

Spot two 45m cement plugs from 3090 m to 3045 m and from 3045 m to 300m. Pull back to top of plug and circulate hole clean.

Pull back stinger, spot two 45m cement plugs from 2850 m to 2805 m an2805 m to 2760 m. Pull back to top of plug and circulate hole clean.

Pull back stinger, spot two 45m cement plugs from 1940 m to 1895 m an1895 m to 1850 m. Pull back to top of plug and circulate hole clean. POH.

Spot 30 m balanced plug on top of the bridge plug. (Make sure a corrosioninhibitive mud system is in place)

P&A Cementing

Pull back DP and spot hi-vis pill from 200 m - 175 m.

Pull back to top of plug and circulate hole clean. Function BOP's and flushthrough kill lines. POH.

B.

8.1.1

B.1

8.1.2

8.1.3from

8.1.4from

8.1.6

B.1.7

B.1.8

81.9

I ,PREMIER OIL

IIIIIIIeIIIIIitIIIIIII

18 M/lY 1998, Abandonment Program5

05/19 198 09:02 NO.434 07+61 8 93241851

Displace riser to seawater.

Lay down diverter. Pick up landing joint and collapse slip joint. Unlatch BOPPOOH with riser. Store LMRP and BOP stack.

Pick up 298mm (11~") casing cutter, dressed to cut 762mm(30") _ 340m(13:\18) casing.

RIH and cut 340mm (13318

) casing 5 m below seabed. POOH changecutters.

RIH with 298mm (11~") casing cutter and cut 762mm (30") casing 5m belowseabed (see Appendix for details).

Pick up 476mm (18314

) casing spear. RIH. Spear 476mm (18314") wellheadhousing. POOH. Set guide base on spider beams and release spear.

Rlser/BOPlWellhead Retrieval

Jump ROV and conduct seabed survey.

B.2

8.2.1

B.2.2

8.2.3

8.2.4

8.2.5

8.2.6

8.2.7

I, PREMIER OIL

II,IIIIIeIIIIIt'IIIIIII

The mInimum requirements for P&A according to the "Petroleum (SubmergeLands) Act" are the following:

2. When there is an open hole immediately below the casing string, there shall beplaced in the casing string:

4. Any interVals of cased hole in a well between cement plugs shall be filled withmud fluid of appropriate density suitably inhibited to prevent the corrosion ofcasing string.

6

05/19 198 09:03 NO.434 08+61 8 93241851

a. a cement plug placed by displacement method as to extend at least 30meters above and at least 30 meters below the casing shoe or

b. a cement retainer with effective back pressure control set at least 10m, butnot more than 30 m, above the casing shoe with a cement plug calculated toextend at least 30 meters below the casing shoe and at least 15 metersabove the retainer or

c. where lost circulation conditions exist or are anticipated, a permanent typebridge plug set within 45 meters above the casing shoe with at least 15meters of cement on top of the bridge plug

1. In the uncased portions of a well, cement plugs shall be placed such as toprovide a minimum of 30 meters of cement above and minimum of 30 meters ofcementbelow any significant oil, gas or fresh water zones.

3. A surface cement plug extending at least 45 meters in height shall be placed inthe innermost casing string which extends to the seabed with the top of the plugat a depth no greater than 45 meters below the seabed.

5. All casing string and piling shall be severed and removed at least 5 metersbelow the seabed and the well location shall be cleared of any debris andobstructions.

18 May 1998, Abandonmenr Progfam

I PRE~IER OIL

IIIIIIIeIIIIIt'IIIIIII

E. Planned Well ~atus After Abandonment

III

PRE~IER OIL +61 8 93241851 05/19 198 09:03 NO.434 09

......"' ",.. ·····,,;,··· ·,,·..········ ········ ·..·..·.. 130 nleters

152 meters................ ·....·····..·......·..·_.. ··· ..·.._····.."'....·....·"'·..·175 meters

8

J850 meters, 'roc

853 meters

1940 melers

2760 meIers, TOe

2850 meters

3000 meters, TOe

3090 meters

3164 meters, TD

~--t---r----""1Corrosion Inhibitive Mud Sys ern

[45 meters J

[ EVCM =:J

12·114" OH

( 30"Casing~

13.3/8" Casing

18 MillY 1998. AbllMonment Program

I:Lrneter) ..._-......._ ..._ .._ ...._ ...

IIIIeIIIIIt'IIIII

.uAII Depths Ire RI(B

II



Victoria Minerals & Petroleum Ops. Attn: Ahmed Nadji

PAG 01 03

5'9

D Please Recycle


Pages:

From: Gordon Hunter

Date: May 19, 1998

cc:

, I

o Please Reply

PREMIER OIL GEELONG

D Please Comment

0352722058

o For Review


Mineral Resources Tasmania. Attn: Carol8acon

-Comments:

Gordon Hunter

o Urgent

Re:

Fax:

Phone:

To:

Premier Oil AustralasiaGeelong Operations BasePhone: 0352722101Fax; 0352722058

Regards

C~V-~

Fax

119/05/1998 09:34

IIIIIIIeIIIII~

IIIIIII

I 19/05/1998 09:34 0352722058 PREMIER OIL GEELONG PAG.... 02/03

I Premier Oil' DAILY DRILLING REPORT ~ 45

I Report Date: 18.05.98 YP lIa-2

Well Data

ICOUNTRY Australia T,O. (m Rn: 3,164.0 CUR, HOLE SIZE ("): 12.25 OAIL.Y COST S: ~171.355FIELD Bass Basin PR.OGR.ESS (m): 0.0 CS~ 00 C'): 13,38 CUM COSTS: $10950,827DRILL CO. : Northern Offshore OJ\.YS FROM SPUO ; 39.13 SHOE TVO (m RT)~ 853 AFECOST$ : $10 108,205RIG: Northern Explorer III DAYS +1- CURVE; LEAK·OFF EMW(ppg) 0.00 A~E BASIS: P&A

I MUD CO: DowellRT ABOVE MSL (m) : 12.5 CURRENT OP @ 0600 : POOH with FMS logging suite

WATER OEPTH@MSL(m): 81.5 PLANNED OP,: RIH with cement stinger, set open hole cement plugs for P&A.

RT TO SEABED (m) : 94.0

I Summary of period 00:00 to 24:00 hrs: Formation Tops. This report ~nly

Perform V$P logging, POOH rig down VSP - rig up CMR. Perform CMR I FORMATION Irop m8Rn

I logging, POOH rig down CMR.


IFROM TO HRS DEPTH ACTIVITY DESCRIPTION

0:00 02:30 2.50 3,164 Correlate depths and check systems on way in. Lower geophone failed at2690m. RIH to 3081 m. Could not get any deeper.

I02:30 08:45 6.~5 3,164 Log as per programme (see comments). Lowest level cannot be taken as 10 Her

geophone not working. Without twin geophones all remaining 43 levels had o betaken individually.

08:45 09:30 .75 3,164 POOH with VSP logging suite.

I09:30 12:30 3.00. 3,164 Lay down VSP tools. Backload Nitrogen racks plus 4 other lifts to Brute Tide

Make up CMR tool.12:30 21:30 9.00 3,164 RIH with CMR tool. Stand up @ 1276m . Passed with no problem on 2nd

Iattempt. Log as per additional programme.

21:30 22:15 .75 3.164 POOH with CMR logging tools.22:15 23:30 1.25 3,164 Rig down CMR logging tool string. Rig up FMS logging tool string.23:30 24:00 .50 3.164 RIH with FMS logging suite.

I ACTIVITY FOR PERIOD 00:00 HRS TO 06:00 HRS ON 19.05.98


I00:00 00:30 .50 3,164 RJH with FMS logging suite00:30 05:45 5.25 3,164 Perform FMS log as per additional programme.05:45 06:00 .25 3,164 POOH with FMS logging suite.

NNOTATIONS FOR PERIOD 00:00 HRS TO 24:00 HRS ON 18.05.98

REMARK I OBSERVATION SOLUTION / RECOMMENDATION

CMR & FMS logging runs were additions to the

Iprogramme

Mud Properties MUD COST FOR TOOAY: $140 CUM:JL~TIVE MUD COST TO OATE: $232,608

Type: VISCOSITY( sec I qt): 53 API FI.UID 1.0SS CI· (ppm): 38.000 SOLIDS (%vol) : 5.5

I PV (cps); 14 (cm3130min) 5 K+ (ppm): 31000 H20 (%vol): 92.0KCIPHPA API FILTER CAKEFROM: ActJve VI? (lb/100sq.ft): 26 (32nds inch 1 HARD/Ca (ppm) : 0 OIL (%voJ): 0

TIME: 21:30 GEL 1Os/1 Om130m HTHP FLUID LOSS MElT (ppb eq) : 10.0 SANO: .3

WEIGHT (ppg): 1.12 (lb/100sqfl) : 9 13 0 (cm3130mln) 0 PM: 0.0 PH: 8.5

I TEMP (C): 30 FANN 3/61100 a 10 215 HTHP FILTER CAKE; PF: .1 PHPA: 0.0(32nds inch) 0

IAnchor Tension A1 : 30.0 A2: 75,0 A3: 60.0 A4: 60,0 A5:110.0(kips) A6: 70.0 A7: 70.0 AS: 75.0 A9: MO:

Workboats Location. Fuel Barite OMr Plwlr Cmt Bent Heli Weather & Rig data @ 24:00 hI'S

I(kllr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VDL (kips: 68.0

Geelon 661 2,706 2.014WIND SP. (kts) : 21.0 VISIB.(nm) : 10 RIS.TENS: '1

P Commander WIND DIR (deg): 45 CEILING (m) : 2.500 HEAVE (m): 0,5BTide at rig 164 2.354 390 PRES.(mbars): 1018 WAVES(m) : 2.1 ROLL (deg): 0.5

IAIR TEMF (C): 15.0 SWELL (m): 74.0 PITCH (deg) : 1.0

!COMMENTS: All anchors piQgied. 1 PAX on rig, 7 PAX. off rig. Commander at Gee~ng & Brute Tide at location.

Copyright IDS Ply Ltd. RbtofB report Mar 16th 1998.1 ,Page Number: 1

I

I 19/05/1998 09:34 0352722058 PREMIER OIL GEELONG PAGE 03/03

Bulk Stocks Used lin Stock Used lin Stock Used /In Stock Used /In Stc ckDRILL WATER (bb!) : 12 2.222 FUEL (bbl): 6 1,351 GEL (SlC) : 0 475 HEll-FUEL (kltr) : 0.3 11.8POT WATER (bbl): 0 1,240 BARITE (sx): 0 6,482 CEMeNT (sx): 0 5,842

MD TVD INCL AZ. CORR. ',," DOGLEG N/S EfW TOOL TYPE(m R1) (m RT) DEG (deg) AZ. SECT (mI30m) (m) (m)

(deg) (m)

2,575 1.00 AIdrift2,660 2.00 AIdrift2,661 2.00 Aldrif'l2.738 1,50 Aldrift2,892 2,00 Aldrifl3.061 2.50 AIdrift3,147 2.20 54.5 67.1 EMS;U50 2.00 Aldri1t

570

2312,71

#

VDL (kips:RIS.TENS:HEAVE(m:ROLL (deg :PITCH (de~ ) :

Page Number: 2

SPP DEPTH MW(psi) (m RT) (ppg)

A5:A10 :

Slow PumD Oat

COMPANY NAME

PremierNorthernDowell Senium CementAsiatic ROVDowell SchJum MudGeoSeNJcesTasman - Casing cuttingSenium WirelineInmarsat Tech

3400

SPP SPM(psi)

VISIB.(nm) ;CEILING (m) :WAVES (m):SWELL (m):

A4:

A9:

NAME


Y4~lIa·2

KnoblHarrison

Weather & Rig data @ 24:00 hrs

WIND SP. (kts) :WIND DIR (deg) :PRES.(mbars):AIR TEMP (C) :

A3:AS:

Puml'l Data -Ia t 24 hrs

JOB TITLE

1 Nat. 12-P· 6.50 70 97 7002 Nat. 12·P, 6.50 70 97

# TYPE L.NR SPM EFF Flown (%) (gpm

Geologist Frankiewico:Geologist ClotaNorthern Explorer P Mcleod & Milroy

Orlg SupeNisorN. Drlg SupeNisor

DATE SAFETY DETAILS

1215/98 LTI 25/4/98MTI 12/5198



Pump Data

A2 :

A7:

30 400 3061 9.340 525 3061 9.3SO 625 3061 9.3

NVAM 30 400 3061 9.3NVAM 40 525 3061 9.3

N,VAM 1I!~;:::;=~~~~=~===~~~~~=5=0~=62;5~;;3;;0=:;6=:;1*==9=.3~N.VAMNVAM Personnel: on Site:; 92NVAM

LSDLSO1.80[.BO[.BOL80

GRD THREAD

INSPECTIONS

853 853

A1 ;

A6:

BOP TeSTNexT TEST DUE DATERIG INSPECTIONDAYS SINCE I.TA

18.05.98

LNGTH CSG wr(m) ID (") Ibslfl

14.9 12.4 68.0, 1.5 12.4 68.012.3 12.4 68.0

713.4 12.4 68.03.1 12.4 68.05.5 12.4 68,0

Location. Fuel Barite Dlwtr Plwtr Cmt Bent Heli(kltr) (sx) (bbl) (bbl) (sx) (sx) (kilT)

LOT PHASE CSG SHOE CSG SHOEMD TVD(m8R'D

TYPE

DRILL TYPE DATE

CSG00(")

13.3/8 "

Shoejt1 x jtF/Coliar jt62 xjts1 x pup "A"WHjt

TRIP DRILL 13/5198FIRE 17/5/98PIT DRIL.1. 13/5198INC/DENT

Workboats

Casing


Survey

Last Tool Type: AIdriftMagnetic Declination: 12.60Survey method: Min Curvature

Drills, Permits & Inspection~

Report Date:

I Premier Oil

IIII ICOMMENTS ;

IIIIIII..IIIIII

Copyright IDS ~ty LId. RbtofB report Mar 16th 1998,1

I

II 18/~5/1998 09:14 0352722058 PREMIER OIL GEELONG PAG 01/04~

Please find attached the Daily Drilling report for "!T' May 1998.


Premier Oil AustralasiaGeelong O"eratlons BasePhone: 0352722101Fax:03527220SS

D Please Recycle


Date: May 18,1998

Pages:

From: Gordon Hunter

cc:

o Please Replyo Please CommentD For Review




Fax::

-Comments:

Phone:

o Urgent

Re:

To:

Regards

C·i,~~Gordon Hunter

Fax:

IIIIIIIeIIIIIf'IIIIIII

So 71.361$10.79,471$10. 08,205

P&A

PAGE El2/04

DAILY COST S :CUMCOST$:AFE COSTS:

AFE BASIS:

12,2513.38

B530.00

Formation Tops - This report c nlyII FORMATION ITOP( "eRT) I

CAlLY DRILLING REPORT., 44

Yc lIa-2

CUR. HOLE SIZE ("):CSGOD("):

SHOE TVD (m RT):

LEAK·OFF EMW(ppg)

PREMIER OIL GEELONG

3.164,0

0,038,13

CURRENT OP @ 0600: vS~ logging,

PLANNED OF'. : Complete VSP. Run CMR and FMS logs. Rig down Sc:hlumberger.


DAYS FROM SPUD:

DAYS +/- CURVE:

0352722058

AustraliaBass Basin


Cowell ~ -'- .L-- -+__I

12.581.594.0



MDT log collecting pressure and samples. Pump out module failure.Repair module. Complete MDT programme. RIH with VSP tools.

Well DataCOUNTRY

FIELDDRILL CO. :RIG:MUCCO:

RT ABOve MSL (m) :WATER DEPTH @MSL (m):

RT TO SEABED (m) :


Premier Oil

I 18/El5/1998 El9: 14

IIIIII


.75

3.50

.25

.502.003.251.008.251.001.501.50

02:30 06:00

00:00 02:30 2.50 3,164 Correlate depths and check systems on way in. Lower geophone failed at2690m. RIH to 3081 m. Could not get any deeper.

3.164 Log as per programme (see comments). Lowest level cannot be taken as lovergeophone not working. Without twin geophones all remaining 43 levels had t betaken individually.


3.25 3,164 Continue MDT. Pressure survey from 1913.3m - 3063.7m - 41 pretests. 1sample.

3.164 Start taking sample at 3031m - pumpout module failed .3,164 Take gas sample at 2815m.3.164 POOH with MDT tool to repair pump out module.3,164 Repair pump out module and RIH.3,164 Pull back after 20m - cable head problem.3,164 RIH with MDT to 2809.5m Take samples and pressures as per programme.3,164 POOH from 1876m, 500·7001bs overpull @2393m, 2386m &2370m.3,164 MDT tool out of hole - recover samples - laydown MDT. Pick up VSP tool.3,164 8ackload remaining Schlumberger Testing equipment from aft deck to Brute

Tide. Getting heavy loads off NEIll while weather permits.3,164 Pick up VSP air guns and hydrophones with aft crane and lower over aft port.

Synchronise VSP air guns23:15 24:00 .75 3,164 RIH with VSP tools.

22:30 23:15

.eOM TOI ~:OO 03:15

03:15 03:3003:30 04:0004:00 06:0006:00 09:1509:15 10:1510;15 18:3018:30 19:3019:30 21:0021:00 22:30

IIIII


Copyright IDS Ply Ltd, RbtofB report Mar 16th 1998.1


Page Number: 1

2590m2550m2510m2470m2300m2100m1900m1800m1610m1400m

2610m2570m2530m2490m2400m2200m2000m1875m1710m1500m

VSP programmme - twin CSAT geophones on tool 20mapart. 44 levels total.3090m 3070m I3050m 3030m I3010m 2990m I2970m 2950m I2930m 2910m I2890m 2870m I2850m 2830m I2810m 2790m I2770m 2750m I2730m 2710m I2690m 2670m2650m 2630m

IIIIIII

I 18/'05/1998 09:14 0352722058 PREMIER OIL GEELONG PAG 03/04



Mud Properties MUD COST FOR TODAY: $1.237 CUMULATIVe MUD COST TO DATE: $232,468

I Type: VISCOSITY( sec I qt ): 50 API FLUID LOSS CI· (ppm): 38.000 SOLIDS (%vol) : 5.4

KCIPHPA PV (cps): 14 (cm3/30min) 5 K+ (ppm): 31000 H20 (%vol): 92,0API FILTER CAKE

FROM: Active YP {lb/' OOsq.ft}: 28 (32nds inch 1 HARDICa (ppm) : 0 OIL (%voJ): 0

TIME: 20:00 GEL 10s/1Om130m HTHP FLUID LOSS MBT (ppb eq) : 10.0 SAND; .3

I WEIGHT (ppg): 1.12 (lb/100sqft) : 9 13 0 (cm3/30min) 0 PM: 0.0 PH; 8.5

TEMP (C): 3S FANN 3/6/100 8 10 26 HTHP FILTER CAKE PF; .1 PHPA: 0.0 ,(32nds Inch) a

I Anchor Tension A1 ; 30.0 A2.: 70.0 A3: 60.0 A4; 60.0 AS: 100.0(kips) A6: 70.0 A7: 70.0 AS: 75.0 A9; A10 :

I Workboats Location, Fuel Barite DJwtr P/wtr Cmt Bent Heli Weather &. Rig data @ 24:00 hrs(kltr) (sx) (bbl) (bbl) (sx) (sx) (Idtr) VOL (kips: 468,0

WIND SP. (kts) : 26.0 VISIB.(nm) : 10 RIS.TENS; '1PCommander Geelon 661 2.706 2,014 WIND DIR (deg): 45 CEILING (m) :2,400 HEAVE (m) 0.5BTide at rig 171 2.354 415 PRES.(mbars); 1026 WAVES (m): 2.4 ROLL (deg): 0.5

I tOMMENTS'

AIR TEMP (C) :15.0 SWELL (m): .9 PITCH (deg : 1.5

All anchors piggied. aPAX on rig. aPAX off rig. Commander at Geelong & Brute Tide at location,

I Bulk Stocks Used lin Stock Used lin Stock Used lin Stock Used lin Sto~

DRILL WATER (bbl):O 2.234 FUEL (bbl); 6 1,357 GEL (sx); 0 475 HELl-FUEL (kltr) : 0.0 11 1POT WATER (bbl): 0 1,240 BARITE (sx) : a 6.482 CEMENT (sx) : 0 5.842

I Drills, Permits & InspectioneDRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

I TRIP DRILL 13/5/98 BOP TEST 1215/98 LTI 2514/98FIRe 17/5/98 NEXT TEST DUE DATE MTI 1215/98PIT DRILL 13/5/98 RIG INSPECTION 1714/98 JSA ongoingINCIDENT DAYS SINCE LTA 20 #PTW ongoing

ISafety Meeting 16/5/98

Casing Pump DataCSG LOT PHASE CSGSHOE CSGSHOE PumD Data· last 24 hrs Slow PumD Oat

IOD('1 MD TVD (mBRT) # TYPE LNR SPM EFF Flow Spp SPM SPP DEPTH MW

13.3/8 " 853 853 (") (%) (gpm (psi) (psi) (mRT) (ppg)

1 Nat, 12-1'· 6.50 70 . 97 700 3400 30 400 3061 9.3TYPE LNGTH CSG wr GRD THREAD 2 Nat. 12-P· 6.50 70 97 40 525 3061 9.3

(m) 10 (") Ibslft 50 625 3061 9.3

Shoejt 14.9 12.4 66.0 L60 N.VAM 30 400 3061 9.3

1 x jt 11.5 12.4 6B.O LBO N.VAM 40 525 3061 9.3

F/Coliar jt 12.3 12.4 6B.0 LBO N,VAM SO 625 3061 9.3

I62 xjts 713.4 12.4 68.0 LBO N,VAM1xpup"A" 3.1 12.4 68.0 LBO N,VAM Personnel: on Site =98WHjt 5.5 12.4 68.0 LBO N.VAM

JOe TITLE NAME COMPANY NAME #

IDrlg SupeNlsor Knobl Premier 5N. Drlg Super'lrisor Harrison Northern 71

Dowell Schlum Cement ZGeologist Frankiewicz Asiatic ROV 3Geologist Clola Dowell Schlum Mud 1

I Northern Explorer P Mcleod & Milroy GeoSeNices 4

Anadrlll 1Schlum Testing 3Schlum Wireline 7

IInmarsat Tech 1

II

Copyright IDS Ply Ltd, RbtofB report Mar 1Sth 1998.1 Page Number: 2

I

----

I 18/'2l5/ 1'3'38 0'3:14 0352722058 PREMIER OIL GEELONG PAG 04/04

II

I Premier Oil DAilY DRILLING REPORT # 44

I Report Date: 17.05.98 YolIa-2

Survey MD TVD INCL lIZ. CORR. 'V' DOGLEG NfS EfW TOOL "TYPE

I Last Tool Type: AIdrift {m RD (mRD DEG (deg) AZ. SECT (m/30m) (m) (m)(des) em)

Magnetic Declination: 12.60 2,575 1.00 A1drjfl

Survey method: Min Curvature 2,660 2.00 A1drjfl

I2,661 2.00 Aid rift2,73B 1,50 JlJdrift2,892 2.00 Ndrift3,061 2.50 Aldrift3,147 2.20 54.5 67,1 EMS

I 3,150 2.00 Aldrift

IIeIIIII{'IIIIII

Copyright IDS pty LId, RbtofB report Mar 16th 1998.1 Page Number : 3

I

ACTIVITY fOR PERIOD 00:00 HRS TO 24:00 HRS ON 15.05.98FROM TO HRS DEPTH ACTIVITY DESCRIPTION


175.539$9964.207

$10 108,205

P&A

Page Num ber; 1

pI: 11 85( I/S0/9I

DAILY COST $ :CUM COST $ :AFE COST $ :

AFEBASIS;

12.2513.38

eS30.00

8S0GGLGS£0

3,164.Cl.-t"'CUR. HOLE SIZE ("):

4.0 CSG OD (") :

36.13 SHOE TVD (m RT):

LEAK-OFF EMW(ppg)

'\~~ ;i'"D~\lJN~DAILYDRILLING REPORT ~ 42

Yplla-2

CURRl;NT O~ @ 0600: Rig up Schlr.imbergerPLANNED OP. : Run Logs.

T.D.(m~~l~PROGRESS (m):

DAYS FROM SPUD :

DAYS +/- CURve:

9NDl339 lID ~3IW3~d

.75

1.251.50

1.001.501.75

3.00

1.50

1.00

1.00

1.00

2.751.501.001.501.50

AustraliaBass Basin


Dowell t---------.....L-----------I.--------+---I12.581.594.0

04:0005:3006:3008:0009:30


21:15 22:3022:30 24:00

17:00 18:0018:00 19:3019:30 21 :15

14:00' 17:00

10:30 11 :30

11:30 12:30

12:30 14:00

09:30 10:30

00:30 01:15

00:00 00:30 .50 3,164 Continue to pick up triple combo tool ( GR, LDL,CML,MSFL,DLL) calibratesame.

3,164 RIH w/ triple combo tool to 1256m - tool standing up on ledge. Work tool ul anddown - open calipers attempt to pass ledge. No success.

3,164 POOH and layout triple combo tool. Rig down Schlumberger.3.164 M/U 12 1/4" drilling BHA and RIH for wiper trip.3,164 Slip and cut drilling line.3,164 RIH to 1244m. taking weight ( previously not seen) at 1244m.3,164 Work tight hole from 1244m -1305m ( 1 single & 2 stands). Hole bridging (ff

not only a ledge.3,164 Circulate at 1305m to clear up hole. Unloading excessive amount of

cuttings/cavings from wiping this hole section. Tight hole appears not to b~ amud chemistry problem - cuttings/cavings are dry & hard.

3,164 Continue RIH stands from 1305m - 1893m. Filled pipe @ 1893m. Boost riserdown C&K lines while running in stands. Large amount of cuttingslcavingsunloading at shaker.

3,164 No returns observed when filling pipe. Trapped pressure 500psi. No tight hole.Bleed of pressure at stand pipe. Make connection, observed backflow at tcolJointindicating blocked string 1nozzles.

3,164 Work string and pump from 1893m - 1920m. Regain full circulation after 4 mins.Pump 50bbl hi-vis sweep &circulate out of hole. Hole still unloading largeamounts of cuttings/cavings. Boost riser down C&K lines.

3,164 Continue RIH stands from 1920m - 1964m. Taking weight 30klbs + again.Precautionary ream/wash from1964-2600m @ 80rpm, 2.5-4.5k ft-Ibs torqu~,

700gpm, 3000psi, to improve hole condition for Schlumberger logs3,164 RIH stands from 2600m- 3000m3,164 Wash & ream intermittent tight hole from SOOOm -3164m3,164 Pump very hi-vis pill 100bbls. 200+ FV. Circulate out of hole. Excessive arllounts

of solids (mainly coal) unloading at the scalping shakers.3,164 Continue circulating to allow the returns to clear up.3,164 Boost riser through C&K lines while POOH wet 5 stands, pump weighted 5lug.

POOH from 3016 - 2700m.

01:1504:0005:3006:3008:00

CopyrighllDS pty Ltd, RbtofB report Mar 16th 1998.1

Summary of period 00:00 to 24:00 h~: Formation Tops - This report bnlyAttempt to get modified logging suitedown- could not pass 1256m. Wiper II FORMATION ITOF (mBRT)

trip.

00:00 04:30 4.50 3,164 Flow check well ( after mUdloggers advise of 20bbl gain) • OK Slug anotl erweighted pili. POOH from 2700m. Overpull 8·10k Ibs.

04:30 06:00 1.50 3,164 Rig up Schlumberger.



Well DataCOUNTRY

FIELDDRILL co.:RIG:

MUD CO:

RT ABOVE MSL (m) :

WATER DEPTH @MSL (m) :RT TO SEABED (m) :

Premier Oil

IIIIIIIIIIIIIIIIIIIII

------------

II Premier Oil DAILY DRILLING REPORT ~ 42

Report Date: 15.05.98 VI)l!a-2

I Mud Properties MUD COST FOR TODAY: $3,612 CUMULATIVE MUD COST TO DATE: $231,230

Type: VISCOSllY( sec I qt): 44 API F~~ID ~OSS CI- (ppm): 39,000 SOL.IDS ('¥oval) : 6.4

KCIPHPA F'V (cps) : 12 (em31 min 6 K+ (ppm): 31000 H20 (%vol): 91.0

IAPI FILTER CAKE

FROM: Activ@ YP (Ib/100sq.ft): . 28 (32nds inch 1 HARD/Ca (ppm) : 0 OIL ("Iovol): 0

TIME: 22;00 GEL 10s/10m130m HTHP FLUID LOSS MeT (ppb eq) : 10.0 SAND: .3

WEIGHT (ppg): 1.13(lb/100sqft) : S 14 0 (cm3/30min) 0 PM: 0.0 PH: 8.8

ITEMP (C): 63 FANN 3/6/100 a 10 26 HTHP FILTER CAKE PF; .1 PHPA: 0.0(32nds inch) 0

Bit Data for Bit 1# 9 IADe# 4 3 5 Wear I II 01 II D II L II B II G II 02 I R ]1 II 1 IIWTII A II EO II 1/16 II NO I TD J

I SIZE("): 12.25 NOZZLESMANUFACTURER: HU AVE woe (k-lbs): 35

Drilled over the fast 24 hI'S Calculated over the oit run1 X14 METERAGE (m) : 4 CUM.METERAGE (m) 113lYPE: MAXGT-P09 AVE RPM : 160 2 X16 ON BOTTOM HRS : .5 CUM. ON BOT. HRS: 13.5

ISERIAL#: A64KA FLOW (gpm) : 700 X IADC DRIL.L. HRS : .6 CUM.IADC DRILL. HR5: 14.6DEPTH IN (m RT) : 3051 PUMP PRESS. (psi): 3,400 x TOTAL REVS: 4,600 CUM.TOT. REVS: 129,600DEPTH OUT (m RT) : 3164 HSI (hp/sqi) : 1 X ROP (m/hr): 6.7 ROP (m/hr): 7.8

I BHA#11 Length (tt) :226.7 D.C. (1) ANN. VELOCITY (mpm): 199HRS ON JARS: STRING WT(k-lbs) : 315 TRQE MAX (ft·lbs): 8.711 D.C. (2) ANN VELOCllY (mpm): 199WT BLW JAR(k-lbs): 46 PICK UP WT(k-lbs) : 325 TRQE ON (ft-Ibs): 8,600 HW.D.P. ANN VELOCITY (mpm). 137

I BHA WT(k-lbs) : 63 SLK OFF WT(k-lbs) : 305 TRQE OFF (ft-lbs): 5.000 D.P. ANN VELOCllY (mpm) : 137

BHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL # COMMENT12 1/4" rock bit ·12/14"NB Stab ctw float-

Hughes MAXGT·P09 14.6 A64KA

I8"Anderdrift - 8"Pony NMDC - 12 1/4" Stab - Totco Anderdrifl tool 136.6 ADS814 New in hole at 2580mring - 6"NMDC -12 1/4"Stsb - 9xS"DC - Jar- HE hydra jar 99.2 2651 In hole at 2738m 6/5/983xS"DC - ~o • 1 x HWDP - dart sub - 8 X HWDP.

I Anchor Tension A1 : 30.0 A2: 85,0 A3: 65.0 A4: 60.0 A5: 60,0

(kips) A6: 90.0 A7: 65.0 A8: 75.0 A9: 70.0 A1075.0

I Workboats Location. Fuel Barite Dlwtr p/Wtr Cmt Bent Helj Weather & Rig data @24:00 hrs(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VDL (kips: 434.0

WIND SP. (kts) : 8.0 VISIB.(nm) : 10 RIS.TENS "P Commander Geelon 687 629 1,856 WIND DIR (deg) :220 CEILING (m) : 2,300 HEAVE (m : 0.5BTide at rig 186 2,354 485 PRES.(mbers); 1020 WAVES(m) : , .2 ROLL (de~ ) : 0.5

I AIR TEMP (C): 15.0 SWELL (m): .6 PITCH (de9): 1.0

!COMMENTS: All anchors piggied. 0 PAX on riQ, 0 PAX off rig. Commander at White Ibis & Brute Tide allocation.

I' Bulk Stocks Used lin Stock Used f In Stock Used f In Sloe,", Used lin S ock

DRILL WATER (bbl):O 2,234 FUEL (bbl): 13 1,373 GEL (sx): 0 475 HEL.I-FUEL (kltr) : 0.0 11.5

POT WATER (bbl): 0 1.265 BARITE (sx) : 0 6,482 CEMENT (sx) : 0 5,842

I Drills, Permits & InspectionEDRILL TYPE DATE INSPECTIONS DATE SAFElY DETAILS

I TRIP DRILL 13/5/98 BOP TEST 12/5/96 LTI 25/4/98

FIRE 10/5/98 NEXT TEST OUE DATE MTI 12/5/98

PIT DRILL 13/5198 RIG INSPECTION 17/4/98 JSA ongoing

INCIDENT DAYS SINCE LTA '8 #PiW ongoingSafety Meeting 10/5/98

I Pump DataP JmD Data· last 24 hl"5 Slow~ 'umDD ta

I# lYPE LNR SPM EFF Flow Spp SPM SPP DEPT~ MW

n (%) (gpm (psi) (psi) (mRT (ppg)

1 Nat. 12-P· 6.50 70 97 700 3400 30 400 3oe1 9.32 Nat. 12·P· 6.50 70 97 40 525 30e 1 9.3

50 625 30E1 9.3

I 30 400 30E 1 9.340 525 30E 1 9.3SO 625 30e 1 9.3

I Copyright IDS Ply Ltd, RbtofB report Mar 16th 1996.1 Page Num~ er: 2

I (;0 3Si\;;1d SiNDl33Si lID ~3IH3~d 8S0(;U(;SE0 t>1 :n 855 /S0/'31

Report Date:


Yc~lIa-2

Personnel: on Site"" 97

Geologist FrankiewiczGeologist ClotllNorthern EXplorer P Meleod & Milroy

CaslnaCSG LOT PHASE CSG SHOE CSGSHOE00(") MO TVD (mBRT)

13.3/8 " 853 853

TfPE L.NGTH CSG wr GRD THREAD(m) 10(") lbstn

Shoe jt 14.9 12.4 68,0 L.80 NVAM1 xjt 11.5 12.4 68,0 L.SO NVAMFlGoller jt 12.3 12.4 68,0 L.BO NVAM62 xjts 713.4 12.4 68.0 LBO NVAM1 x pup "A" 3.1 12.4 68.0 L80 N.VAMWHjt 5.5 12.4 68.0 L80 N.vAM

JOB TITL.E

Orl9 SupervisorN. Drl9 Supervisor

NAME

KnoblHarrison

COMPANY NAME

PremierNorthernDowell Sehlum CementAsiatic ROVDowell Schlum MudGeoServlcesAnadrillSehlum TestingSenium Wireline

#

511

2314,37

Survey

Last Tool Type; AIdriftMagnetic Declination: 12.60

urvey method: Min Curvature

MD TVD INCL ,.;z CORR. '\/' DOGLEG N/S EfIN TOC L TfPE(m RT) (m RT) DEQ (des) AZ SECT (m/30m) (m) (m)

(des) (m)

2,575 1,00 Aidrift2,660 2.00 Aid rift2,661 2,00 Aid rift2,738 1.50 Aid rift2,892 2.00 Aldr"ft3,061 2.50 Aid rift3.147 2.20 54.5 67.1 EMS3.150 2.00 Aidrift

Copyright IDS Ply Ltd, RblofB report Mar 16th 1998.1 Page Numl eT: 3

1::0 9NDl339 lID ~3IW3~d t>1 :11 855 /S0/91

II 15/05/1998 09:27 0352722058 PREMIER OIL GEELONG PAG 01/04

Please find attached the Daily Drilling report for 141tl May 1998.

Gordon Hunter


o Please Recycle


From: Gordon Hunter

Date: May 15, 1998

cc:

Pages:





-Comments:

Fax:

Re:

D Urgent

Phone:

To:


Regard~ A ~.

C~t.~·

Fax

IIIIIIIIIIIIfIIIIIII

02/04

$1 7 5,256$9,788,658

$10.1 08,205

P&A

PAGE

DAILY COST $ :CUMCOST$:AFE COSTS:

AFE BASIS:

12.2513.38

8530.00

Formation Tops. This report onlyII FORMATION ITOP(r~BRT)


Yo la-2

CUR. HOLE SIZE CO):CSGOD C

n):

SHOE TVD (m RT);LEAK-OFF EMW(PP9)

PREMIER OIL GEELONG

3,164.04.0

35.'3

CURRENT OP @ 0600: Running wiper trip, SUp &cut drilling line.

PLANNED OP.: Complete wIper trip. Run Logs.

T.D. (m RT):

PROGRESS Cm):


0352722058

AustraliaBass Basin


Dowell I-------------l------------£.--------+--12.581.594.0


Summary of period 00;00 to 24:00 hrs:

Check Trip. drop EMS. POOH. RJU Schlum. RIH with PEX to 1256m tools standing up - cannot pass.

Well DataCOUNTRYFIELDDRILL CO. :RIG:MUD CO;

RT ABOVE MSL (m) :WATER DEPTH @MSL (m) :RT TO SEABED (m) :


Premier Oil

II 15/05/1998 09:27

IIIIII

Page Numbe ; 1

2.751.50

.50


02:30 2.0004:15 1.75

06:30 2.2507:00 .5011:00 4.00

13:30 2.50

15:30 2.0017:30 2.00

18:00 .5018:30 .5019:00 .5020:30 1.5021:15 .75

24:00 2.75

All attempt to RIH with Schlumberger logging tools stoodup at 1256m. A possible solution looked at was attachinga 20ft length of chain to the bottom of the tool, this couldpile up and spill over any ledges guiding the logging toolsover the ledges. However Schlumberger do not carry anyXlovers that are suitable to connect to the bottom ofAithAf tnt=> PF=X nr trinlt=> ~nmhn tnnll::

01:15 04:0004:00 05:3005:30 06:00

00:00 00:30 .50 3,164 Continue to pick up triple combo tool ( GR, LDL,CML,MSFL,DLL) calibrate same.00:30 01 :15 .75 3,164 RIH wI triple combo tool to 1256m - tool standing up on ledge. Work tool up and

down· open calipers attempt to pass ledge. No success.3,164 POOH and layout triple combo tool. Rig down Schlumberger.3,164 M/U 12 1/4" drilling SHA and RIH for wiper trip.3,164 Slip and cut drilling line.


04:1506:3007:00



Copyright IDS Ply Ltd. Rbloffi report Mar 16th 1998.1

IIIIIII

Ijf'ROM TO HRS DEPTH ACTIVITY DESCRIPTION

"-0:00 00:30 .50 3,164 Drill ahead 3160m - 3164m wI 125/160rpm, 30-40klbs WOS, 7.5-9k ft-Ibstorque, 700gpm, 3400psi. Av ROP 8m/hr.

3,164 Circulate bottoms up from TO.3,164 Short wiper trip up to 3000m and back to bottom. First 3 stands off bottom ul to

40klbs overpull. Overpull >70klbs at 3060m. M/U top drive and backream from3060m - 3004m. Run back to bottom

3,164 Circulate hole clean.3,164 Drop EMS3,164 Pull 5 stands. Pump weighted slug. Continue POOH to shoe. Tight hole betv. een

2900m ·2700m • 40/50klbs overpull. Flow check @ shoe OK.3,164 Continue POOH. Recover EMS from top of NMDC. Broke off bit. gauged stabs·

top/middle/NB 1/16" UG.3,164 Rig up Schlumbergerwlreline.3,164 RIH wI PEX - CMR tool to 1256m, Tool standing up on ledge ( 2 x bow sprin s

pushing tool onto the wall - no hole finder on bottom of tool - bull nose only)unable to pass.

3,164 POOH with PEX-CMR tool.3,164 Break down tools and layout CMR.3,164 RIH wI PEX to 1256m - tool standing up on ledge.3,164 Log with PEX from1255m - 853m ( casing shoe) with GR to seabed.3,164 Investigate possibility of attaching 20ft of chain to bottom of PEX which woul

allow tool to get past ledge at 1256m. Not possible - no suitable xiovers inSchlumberger equipment.

3,164 Layout PEX and pick up triple combo tool ( GR. LDL,CML.MSFL.DLL) calibre tesame. Again no Schlumberger XJovers to allow fixing of chain to bottom of teol.

I00:3002:30

II 11:00

13:30I 15:30

17:30

I 18:0018:30.-J 19:00

I 1

20:30

21:15

I 15/1215/1998 1219:27 12135272212158 PREMIER OIL GEELONG PAG 1213/04


I Report Date: 14.05.98 Yo lIa-2

Mud Properties MUD COST FOR TODAY: $420 CUMULATIVE MUD COST TO DATE: $227,619

I Type: vlSCOSITYl sec I qt ); 47 API FLUID LOSS CI· (ppm): 38,000 SOI.IDS (%vol) : 5.5PV (cps): 13 (em3130min) 5 K+ (ppm): 29000 H20 (%vol):KCIPHPA 92,0

API fll.TER CAKEFROM: Active

YP (lb/100sCl,ft): 31 (32ndsinch 1 HARD/Ca (ppm) : 0 OIL (%vol): 0

I TIME: 05:30 GEL 105/1 OmJ30m HTHP FLUID LOSS MBT (ppb eCl) : 7.5 SAND: 0,4

WEIGHT (ppg): 1.12 (lb/100sqft) : 9 16 0 (cm3J30min) 0 PM: 0.0 PH: 9.0

TEMP (C): 64 fANN 3/6/100 9 11 28 HTHP FILTER CAKE PF: .1 PHPA; 0.0(32nds inch) 0

I Bit Data for Bit # 9 lADe, 4 3 5 Wear EB~~EEEE G 02 IIR 1

1 1 WT A E II 1/16 II NO I[ TO JSIZE (n): 12.25 NOZZI.ES Drilled over the last 24 hl5MANUFACTURER; HU

Calculated over the bi run

IAVE WOB (k·lbs): 35 1 x14 METERAGE (m) ; 4 CUM.METERAGE (m) 113

TYPE: MAXGT-P09 AVE RPM: 160 2X16 ON BOnOM HRS : .5 CUM. ON BOT. HRS : 13.5SERIAL#: A64KA FI.OW (gpm): 700 X IADC DRILL, HRS : .6 CUM.IADe DRILL HRS: 14.6DEPTH IN (m RT) : 3051 PUMP PRESS, (psi): 3,400 X TOTAL REVS : 4,600 CUM,TOT, REVS: 1~9.600

I EPTH OUT (m RT) ; 3164 HSI (hp/sqi) ; 0 X ROP (m/hr): 6.7 ROP (mlhr): 7.8

BHA# 11 Length (ft) :226.7 D.C. (1) ANN. VELOCITY (mpm): 199

I HRS ON JARS; STRING WT(k-lb$) ; 315 TROE MAX (It-Ibs): 6,711 D.C. (2) ANN VELOCITY (mpm): 199wr BLW JAR(k.lbs): 46 PICK UP WT(k-lb$) : 325 TROE ON (ft-Ibs): 8,600 H.W.O.P. ANN VEl.OCITY (mpm): 137aHA WT(k-lbs) : 63 SLK OFF WT(k-lbs) : 305 TROE OfF (ft-Ibs): 5.000 D.P. ANN VELOCITY (mpm): 137

IBHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL. # COMMENT121/4" roel< bl~ -12/14"NB Stab CoW float-

Hughes MAXGT·P09 14.6 A64KAS"Anderdrlft - 8"Pony NMDC - 12 1/4" Stab - Totco Anderorift tool 136.6 AOB814 New In hole at 25S0mring - 8"NMDC - 12 1/4"Steb - 9x6"DC - Jar-

HE hydra jar 99.2 2851 In hole at 2738m 615/98

I3xS"DC - xlo - 1 x HWDP - dart sub - 8 X HWDP.

Anchor Tension A1: 35.0 A2: 75.0 A3: 65.0 A4: 60.0 AS: 100.0

I (kips) A6: 70.0 A7 :70.0 A8: 75.0 A9: A10 :

Workboats Location. Fuel Barite Dlwtr Plwtr Cmt Bent Heli Weather & Rig data @ 24:00 hrs(kltr) (sx) (bbl) (bbl) (sx) (Sx) (kar) VOL (kips: ~27.0

I WINO SP. (kts) : 18.0 VISfS,(nm) : 10 RIS.TENS: 11PCommander Geelon 687 629 1,856 WIND DIR (deg): 20 CEILING (m) :2,300 HEAVE (m): 0,5BTide at rig 190 2,354 491 PRES.(mbars): 1021 WAVeS (m); 1.6 ROLL (deg) 0,5

AIR TEMP (C); 15,0 SWELL (m); .7 PITCH (deg) : 1.0

'!COMMENTS : All anchors piqQied. 16 PAX on rig. 17 PAX off rig. Commander in Geelong & Brute Tide at location.

Bulk Stocks Used lin Stock Used /In Stoel< Used lin Stock Used I In Sto k

I DRILL WATER (bbl) :51 2,234 fUEL (bbl): 12 1.386 GEL (sx): 0 475 HELI·fUEL (kltr) : 0.2 11.p

POT WATER (bbl): 126 1.246 BARITE ($X) : 0 6.4S2 CEMENT ($X) : 0 5,842

IDrills, Pennits & Inspectiom

I

DRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

TRIP DRILL 13/5198 BOP TEST 1215/98 LTI 2514/98fiRE 10/5198 NEXT TEST DUE DATE MTI 1215/98

IPIT DRILl. 13/5198 RIG INSPECTION 17/4/98 JSA ongoingINCIDENT DAYS SINCE LTA 17 #PTW ongoing


IPump Data

PumD Data· last 24 hI'S Slow PumD Oat

# TYPE LNR SPM EFF Flow SPP SPM S~P DEPTH MWr) (%) (gpm (psi) (pSi) (mRn (ppg)

I 1 Nat. 12·P. 6,50 70 97 700 3400 30 400 3081 9.32 Nat. 12·P· 6.50 70 97. 40 525 3061 9.3

50 625 3061 9.330 400 3061 9,3

I40 525 3061 9.350 625 3061 9.3

Copyright IDS Ply I.td. RbtofB report Mar 16th 1998.1 Page Number 2

I


CasinaCSG LOT PHAse CSGSHOE CSG SHOE00(") MO TVD(mBRn

13.3/S" S53 853

TYPE LNGTH CSG wr GRD THREAD(m) 10 (") Ibslft

Shoejt 14.9 12.4 68.0 Lao N.VAM1 xj! 11.5 12.4 68.0 L.80 N.vAMF/Coilar jt 12.3 12.4 68.0 L80 N.VAM62xj!s 713.4 12.4 68.0 LSO N.vAM1 x pup "A" 3.1 12.4 68.0 Leo N.vAMWHjt 5.5 12.4 68.0 LSO N.vAM


Yo la~2

PAG~ 04/04115~05/1998

IIIIII

09:27 0352722058 PREMIER OIL GEELONG

Personnel : on Site;:; 97

JOB TITLE NAME

Geologist Frankiewi~

Geologist ClotaNorthern Explorer P Mcleod & Milroy

COMPANY NAME

PremierNorthernDowell Schlum CementAsiatic ROVDowell Schlum MudGeoServicesAnadrlllSchlum TestingSchlum Wireline

#

571

2:3,4137

Cop~right IDS pty Ltd. RbtofB report Mar 16th 1998.1 Page Numbe: 3

MD TVO INCL A2. CORR. 'v DOGLEG N/S ENol TOOl TYPE(mRn (m RT) OEG (deg) AZ. SECT (mIJOm) (m) (m)

(deg) (m)

2,575 1.00 AId rift2,660 2.00 AJdrift2,661 2.00 AId rift2,738 1.50 Afdrift2,892 2.00 Afdrlft3.061 2.50 Ndrift3,147 2.20 54.5 671 EMS3,150 2.00 Afdrift

l.!urveyI_st Tool Type: AIdriftMagnetic Declination: 12.60Survey method: Min Curvature

IIIIIfIIIIIII

114/05/1998 09: 10 0352722058 PREMIER OIL GEELONG PAG 01/04

Please find attached the Daily Drilling report for 131/1 May 1998.


Premier Oil AustralasiaGeelong Operations BasePhone; 0352722101F'ax:0352722058

o Please Recycle


From: Gordon Hunter

CC:

Pages:

Date: May 14, 1998

o Please Reply

. -'--·~.,-I

'\~~ .i~"-k\N~

o Please Comment. 0 For Review




Re:

-Comments:

Phone:

Fax:

o Urgent

To:

Regards

C~~Gordon Hunter

Fax

IIIIIIIeIIIII.eIIIIIII

I 14/El5/1'3'38 El'3:1El El352722El58 PREMIER OIL GEELONG PAGE El2/El4



Well Data

I COUNTRY Australia T,D, (m RT): 3,160.0 CUR. HOLE SIZE ("): 12,25 DAILY COST $ :

t"~FIELD Bass Basin PROGRESS (m): 109.2 CSG OD ("): 13.38 CUM COST S: $9,6 3,411DRILL CO. : Northern Offshore DAYS FROM S~UD: 34.13 SHOE TVO (m RD: 853 AFE COST $: $10,1 B.205RIG: Northern Explorer III DAYS +1- CURve: LEAK-OFF EMW(ppg) 0,00 AFE BASIS: P&A

I MUD CO: OowellRT ABOVE MSL. (m) : 12.5 CURRENT OP @ 0600; Circulating hole clean.WATER OEPTH @MSL. (m) : B1.5 PLANNED OP.: Orop EMS. POOH. Run Logs.RT TO SEAB~O (m) ; 94,0

I Summary of period 00:00 to 24:00 hrs: Formation Tops - This report 0 ~Iy

Layout core #1. RIH with drilling assembly. Drill from 3050.8m - 3160m. II FORMATION ITOP(IT BRD

I ACTIVITY FOR PERIOD 00:00 HRS TO 24:00 HRS ON 13.05.98FROM TO HRS DEPTH ACTIVITY DESCRIPTION

1':0002:00 2.00 3,051 Cut and layout remaining 2x 6m sections of core. Total of 17.8m recovered.

:00 08:00 6.00 3,051 Pick up drilling BHA. M/U new MAXGT·P09 bit dressed with 2x16, 1x14 nozz es.Break connections above bottom string stab, insert Totco ring. RIH to bottom

I08:00 16:00 8.00 3,051 Bed in bit and drill ahead w/125/160rpm, 30-40klbs WOB, 7.5-9k ft-Ibs torqul ,

700gpm, 3400psi - from 3050.8· 3103m. Av ROP 6.5m/hr. Flow check drillin ~

break at 3082m -OK. Rap increased to 30m/hr.16:00 16:30 .50 3,103 Change swab and liner on #1 pump - piston 2. Circulate on pump #2.

I 16:30 22:00 5.50 3,150 Drill ahead 3103m - 3150m wI 125/160rpm, 30-40klbs W08, 7.5-9k ft-Ibstorque, 700gpm, 3400psi. Av ROP 8.5m/hr. Drilling Volcanics from 3090m.

22:00 22:30 .50 3,150 Low oil pressure on top drive investigated and repaired. Oil changed. Circulat~

Ihole,

22:30 23:00 .50 3,150 Top drive service. Circulate hole.23:00 24:00 1.00 3,160 Drill ahead 3150m· 3160m wI 125/160rpm, 30-40klbs WOB, 7.5-9k ft-Ibs

torque, 700gpm, 3400psi, Av ROP 10m/hr.



I 00:00 00:30 .50 3,164 Drill ahead 3160m - 3164m w/125/160rpm, 30-40klbs WOB, 7.5-9k ft-Ibs tor ~ue,700gpm, 3400psi. Av Rap 8m/hr.

00:30 02:30 2.00 3,164 Circulate bottoms up from TD.2:30 04:15 1.75 3,164 Short wiper trip up to 3000m and back to bottom. First 3 stands off bottom up to

40klbs overpuli. Overpull >70klbs at 3060m, M/U top drive and backream from3060m • 3004m. Run back to bottom

04:15 06:00 1.75 3,164 Circulate hole clean.

I ANNOTATIONS FOR PERIOD 00:00 HRS TO 24:00 HRS ON 13.05.98

Mud Properties MUD COST FOR TODAY; $7,76S CUMULATIVE MUD COST TO DATE: $227.199

IType: VISCOSITY( sec 1qt ): 44 API FLUID LOSS Cl - (ppm) : 40,000 SOLIOS (%vol) : 5.3

PV (cps): 13 (cm3130min) 5 K+ (ppm): 31000 H20 (%'101): 92.0KCIPHPA API FILTER CAKEFROM: Active YP (lb/100sq.ft): 29 (32ndsinch 1 HARDICa (ppm) ; 0 OIL (%vol): aTIME: 22:00 GEL. 1Os/1 Om130m HTHP FLUID LOSS MBT (ppb eq) ; 7,S SANO: 0.4

I WEIGHT (ppg); 1.12 (lb/100sqft) : 8 12 0 (cm3130min) 0 PM; 0,0 PH: 9.0

TEMP (C): 62 FANN 3/6/100 B 10 27 HTHP FILTER CAKE PF: .1 PHPA: 0.0(32nds inch) 0

IBit Data for Bit # 9 IADe# 4 3 5 Wear r=g~~E9E9EgE9BSIZE ("): 12.25 NOZZL.ES Drilled over the last 24 hI'SMANUFACTURER: HU AVE woe (k-Ibs); 33

Calculated over the bit n.m1x14

TYPE: MAXGT -P09 AVE RPM : 151MET~RAG~ (m) : 109 CUM.METERAGE (m) 109

I2X16 ON BOTTOM HRS : 13.0 CUM. ON BOT. HRS : 13,0

SERIAL#: A64KA FLOW (gpm) : 700 X IADC ORIL.L. HRS : 14.0 CUM,IAOC DRILL. HRS; 14,0DEPTH IN (m RD : 30S1 PUMP PRESS. (psi): 3,400 X TOTAL REVS : 117,780 CUM.TOT. REVS: 117,780DEPTH OUT (m RD : HSI (hplsqi) ; 1 X ROP (m/hr): 7.B ROP (mlhr): 7.8

ICopyright IDS Pty LId, RblofB report Mar 161h 1998.1 Page Number: 1

I

--_.-

I 14/05/1998 09:10 0352722058 PREMIER OIL GEELONG PAGE 03/04



BHA#11 Length (tt) :226.7 D.C. (1) ANN. VELOCI1Y (mpm): 91

I HRSON JARS: STRING WT(k-lbs) : 315 ITROE MAX (ft-Ibs): 15,100 I D.C. (2) ANN VELOCITY (mpm): 91wr BLW JAR(k-lbs): 46 PICK UP WT(k·lbs) : 325 TROE ON (ft-Ibs); 9,600 HW.D.P. ANN VELOCITY (mpm): 63BHA V\fT(k-lbs) : 63 SLK OFF wr(k-Ibs) : 305 TRQE OFF (ft·lbs): 500 D.P. ANN VELOCr1Y (mpm) : 63

IBHA DESCRIPTION; TOOL DESCRIPTION HRS SERIAL # COMMENT12 1/4" rock bit ·12114"NB Stab cfw float·

Hughes MAXGT·P09 14.0 A64KA8"Anderdrift· 8"Pony NMDC - 12 1/4" Stab - Totcoring. 8"NMOC - 12 1/4"Stab - 9lC8"DC - Jar- Anderdrifl tool 130.7 ADB814 New in hole at 2580m

3xS"DC • X/O - 1 x HWDP - dart sub - 8 X HWDP. HE hydra jar 93.7 26~1 In hole at 2736m 615/98

IAnchor Tension A1 ; 35.0 A2.; 80,0 A3: 60.0 AA: 60.0 A5: 90.0

I (kips) A6: 75.0 A7: 70.0 AS: 75.0 A9: A10 :

Workboats L.ocation. Fuel Barite DMr PMr Cmt Bent Heli Weather & Rig data @ 24:00 hI'S(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VOL (kips: 430.0

I WIND SP, (Ids): 18.0 VISIB.(nm) : 10 RIS.TENS: 11Commander Geelon 687 629 1.856 WIND OIR (deg): 30 CEILING (m) ; 2,300 HEAVE (m): 0.5Tide at rig 201 2,354 544 PRES.(mbars): 1024 WAVeS (m): 1,2 ROLL (deg) 0.5

AIR TEMP (C): 15,0 SWELL (m): .3 PITCH (deg) : 1.0

I ICOMMENTS: All anchors piggied. No helicopters. Commander in Geelong & Brute Tide at location,

Bulk Stocks Used lin Stock Used lin Stock Used lin Stock Used lin Sto k

IDRILL WATER (bbl) ;528 2,285 FUEL (bbl); 15 1.398 GEL (sx): 0 475 HEL.I-FUEL (kltr); 0.0 11.17

POT WATER (bbl) : 0 1.372 BARITE (sx) : 0 6,482 CEMENT (SlC) ; 0 5,842

IDrills, Permits & Inspectionti

DRILL 1YPE DATE INSPECTIONS DATE SAFETY DETAILS

TRIP DRILL 13/5/98 BOP TEST 1215/98 LTI 2514198fiRE 10/5/98 NEXT TEST DUE DATE MTI 1215198

IPIT DRIL.L 13/5/98 RIG INSPECTION 17/4/98 JSA ongoingINCIDENT DAYS SINCE LTA 16 #PTW ongoing


ICasinCl Pump Data

CSG LOT PHASE CSG SHOE CSG SHOE Pumo Data· last 24 hr.J Slow Pumo Oat00(") MD TVD(mBRD # TYPE LNR SPM EFF Flow SPP SPM SPP DEPTH MW

13.3/8 " aS3 853 (") ("Ia) (gpm (psi) (psi) (m RD (ppg)

1 Nat. 12-1'· 6.50 70 97 700 3400 30 400 30lS1 9.3TYPE LNGTH CSG WT GRD THREAD 2 Nat. 12-1'· 6.50 70 97 40 525 3061 9.3

(m) ID(") Ibslft 50 625 3061 9.3

Shoejt 14.9 12.4 68.0 LSO N.VAM 30 400 3061 9.3

I hjt 11.5 12.4 68.0 L80 N.VAM 40 S;ZS 3061 9.3

F/Coilar jt 12.3 12.4 68.0 L80 NVAM 50 625 3061 9.3

62xjts 713.4 12.4 68.0 LBO N.VAM1 x pup "A" 3.1 12.4 68.0 L80 NVAM Per$onnel : on Site =98

IWHjt 5.5 12.4 68.0 L80 NVAM

JOB TITLE NAME COMPANY NAME #

Drlg SupeNisor Knobl Pramier 5N. Drlg Supervisor Harrison Northern 70

Dowell Schlum Cement 2

I Geologist Frankiewicz AsiaticROV 3Geologist Clota Dowell Schlum Mud 1Northern Explorer P Mcleod & Milroy GeoServices 4

Anadrill 2

I Schlum Testing 3Corpro 2Alfa Laval 1Schlum Wireline 5

II

Copyright IDS Ply Ltd. RbtofB repol1 Mar 16th 1998.1 Page Number: 2

I

I 14/05/1998 09:10 0352722058 PREMIER OIL GEELONG PAGI 04/04-

I Premier Oil CAllY DRILLING REPORT # 40


Survey MD lVO INCL AZ. CORR. '\/' DOGLEG N/S ENV TOOL TYPE

I Last Tool Type: "'drift(m RT) (mRT) DEG (deg) AZ. SECT (mf.30m) (m) (m)

(deg) (m)

Magnetic Declination: 12.60 2,489 0.00 Ndrift

Survey method: Min Curvature 2.575 1.00 Ndrift

I2,660 2.00 Ndrlft2,661 2.00 AJdrif!2,738 1,50 tvdrift2,892 2.00 Aldril'l3,061 2.50 Aid rift

I 3,150 2.00 AJdrift

IIeIIIIIt'IIIIII

Copyright IDS F'ty Lid, RblofB report Mar 16th 1998_1 Page Numbe : 3

I



PAG 01/04

3~,

o Please Reeyele


From: Gordon Hunter

Date: May 12, 1998

Pages:

cc:

o Please Reply

PREMIER OIL GEELONG

o Please Comment

0352722058

o For Review




Fax:

o Urgent

Phone:

·Comments~

To:

Premier Oil AustralasiaGeelong Operations BasePhone; 0352722101Fax: 0352722058

Regards

G,02.~Gordon Hunter

II 12/05/1998 09:01

III

I FaxIIIeIIIIII-IIIIIII

- -



I Report Date: 11.05.98 Yol la-2

Well Data

ICOUNTRY Australia T.D. (m RT): 3.033.0 CUR. HOLE SIZE (n): 12.25 DAILY COST $ : $14 0.688FIELD Bass Basin PROGRESS (m): 0.0 CSG aD (00): 13.38 CUM COSTS: S9,2C 5,324DRILL CO. : Northern Offshore DAYS FROM SPUD: 32.13 SHOE lYD (m RT): 853 AFE COSTS: $10,1C 8.205RIG: Northern Explorer III DAYS +1- CURVE: LEAK-OFF E;MW(ppg) 0,00 AFE BASIS: P&A

I MUD CO: DowellRT ABOVE MSL (m) ; 12.5 CURRENT OP @ 0600 : RIH with coring assemblyWATER DEPTH@MSL(m): 81,5 PLANNED OP.: Core. POOH. Drill ahead.RT TO SEASED (m) : 94.0

I Summary of period 00:00 to 24;00 hrs: Formation Tops. This report or Iy

Rising weather· unlatch riser, WOW, Pull rig over location, Latch LMRP. II FORMATION ITOP(m BRT)



I 00:00 00:30 .50 3.033 Testing BOP's. All rams tested to 300/5800psi for 5/1 Omins as per programme.Only annulars remain to be tested

00:30 01:15 .75 3,033 Stop BOP testing due to building weather. Anchor tension surging to over

I200kips on anchors #3, #4 & #5. Riser angle moving towards 3deg. POOH testplug and prepare to unlatch.

01:15 02:30 1.25 3,033 Preparing to unlatch. Slacken off on anchors #7, #8, & #1 in attempt to keep igover location and ease tension on anchors #3, #4 & #5. Fwd thruster only

I working at 60% output - overloading above that.02:30 03:30 1.00 3.033 Prepared to unlatch. Displace riser to seawater. Tension on anchors #3, #4 & #5

holding steady, riding out weather over location.03:30 04:00 .50 3,033 #4 anchor slipped after surge of >220 kips on anchors #3 &#4. Riser angle

I greater than 3deg, Riser very close to edge of moonpool. Unlatched riser. riSI rhanging on hook.

04:00 18:15 14,25 3,033 Attempt to bring NEill bow more into prevailing weather to ride out storm easier.

I18:15 19:45 1.50 3.033 Heaving NEill back to 7m off location from SOm off location using anchors.19:45 22:00 2.25 3,033 Jump ROV to inspect LMRP. Pretension primary anchors, then secondary

anchors to 200kips all holding. Move vessel over wellheadl BOP stack.22:00 24:00 2.00 3.033 Untangle guide line#1 with ROV. Observe LMRP landing and latching with R()V.

I Overpull on LMRP confirmed latch. Continue working riser. Displace riser tomud.

CTIVITY FOR PERIOD 00:00 HRS TO 06:00 HRS ON 12.05.98


00:00 02:00 2.00 3,033 RIH with test plug & test annular preventers to 300/3500psi • 5/10mins.02:00 03:15 1.25 3,033 POOH wi test plug. RIH and set wear bushing. POOH.

I 03:15 06:00 2.75 3,033 RJH with coring assembly, picking up PDC core head, 3 core barrels & 2 BaashRoss bumper subs.


I REMARK / OBSERVATION SOLUTION I RECOMMENDATION

Planning of deck space for testing phase. Aft deck Possibilty of backloading some of the mUd/Chemica s for

Ialready tight on space. Will test equipment be second well to clear space for testing equipment &backloaded prior to mob. to next location ? chemicals. Test program needed on rig to allow bet er

planning of offloading and chemical storage.

IMud Properties MUD COST FOR TODAY: $0 CUMULATIVE MUD COST TO DATE: $214,455

Type; VISCOSITY( sec 1qt ); 57 API FL.UID lOSS CI· (ppm): 42,000 SOLIDS (%vol) : 5.3PV (cps): 17 (cm31'30min) 4 K+ (ppm): 31000 H20 (%vol):KCIPHPA 92.0

API FILTER CAKEFROM: Active YP (lo/100SCl.ft): 31 (32ndsineh 1 HARD/Ca (ppm) : 0 OIL (%vol): a

I TIME; 23:30 GEL 1O!l/1 Oml30m HTHF' FLUID LOSS MBT (ppb eCl) : 7.5 SAND: 0.3

WEIGHT (ppg): 1.13 (lb/100sqft) : 10 13 0 (c:m31'30mln) 0 I'M: 0.0 PH: 8.5

TEMF' (C): 29 FANN 3/61100 9 11 30 HTHP FILTER CAKE PF: .1 PHPA; 0.0(32nds inch) 0

ICopyright IDS Pty Ltd. RbtofB report Mar 16th 1998.1 Page Number : 1

I

I' 12/05/1998 09:01 0352722058 PREMIER OIL GEELONG PAG 03/04

I Premier Oil DAILY DRIL.L.ING REPORT # 38

I Report Date: 11.05.98 Vol la-2

Bit Data for Bit # 8 lADe # Wear ~~f:gE9~~~EgI SIZE ("j: 12.25 NOZZLES Drilled over the last 24 hI'S Calculated over the bitMANUFACTURER: OT AVE woe (k-Ibs):

runX METERAGE (m) : CUM.METERAGE (m)

TYPE: CM365F AVE RPM : X ON BOTTOM HRS : CUM. ON 60T, HRS :

I SERIAL#: 711001 FLOW (gpm) : X IADC DRILL. HRS : CUM.IADC DRILL HRS:DEPTH IN (m Rn : 3033 PUMP PRESS. (psi): X TOTAL REVS: 0 CUM,TOT. REVS: 0DEPTH OUT (m Rn : HSI (hp/sqi) : 0 X ROP (m/hr): ROP (m/hr);

I BHA#10 Length (tt) :221.5 D.C. (1) ANN. VEI.OCITY (mpm): 0HRSON JARS; ISTRING WT(k-lbs) : ITRQE MAX (ft·lbs):

ID.C. (2) ANN VELOCIIY (mpm): 0

IWT BLW JAR(k·lbs): 40 PICK UP WT(k.lbs) : TRQE ON (ft-Ibs); H.W.D.P. ANN VELOCITY (mpm); 06HA WT(k-lbs) : 57 SLK OFF WT(k-lbs) : TROE OFF (ft-Ibs): D.P. ANN VELOCITY (mpm) : 0

BHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL # COMMENTPOC core bit·3 x 9 112" x 20' Corpro core barrel - 2

Corpro PDC core bit 711001I X Baash Ross drilling bumper subs· 8 x 8"DC - 6aash Ross bumper sub TS48908:t'-3x8"DC • xl' - 1 • HWOP - do. ,"b· OX Baash Ross bumper sub 3203 Northern supplied- WDP.HE hydra jar 76.S 2851 In hole at 2738m 6/5/98

I Anchor Tension A1 : 30.0 A2: 90.0 A3: 75.0 A4: 60.0 A!j: 75.0

(kips) A6: 70.0 A7: 70.0 A8; 75.0 A9: A10:

I Workboats Location. Fuel Barite D1wtr Plwtr Cmt Bent Hell Weather & Rig data @ 24:00 hrs(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VDI. (kips: ?40.0

WIND SP. (kts) : 30.0 VISIB.(nm) : 10 RIS.TENS: 11

I P Commander at rig 699 629 1,887 WIND DIR (deg) :240 CEIL.ING (m) :2,300 HEAVE (m): 0.58 Tide Geelon 226 440 PRES.(mbars): 1015 WAVES(m) : 3.5 ROL.L (deg) 0.5

AIR TEMP (Cl: 13.0 SWELL (m); 3.5 PITCH (deg) ; 1.0

COMMENTS: All anchors piggied.Commander at location. Brule Tide loading in Geelong.

I Bulk Stocks Used lin Stock Used lin Stock Used lin Slock Used /In Sto kDRILL. WATER (bbl):O 3,046 FUEL (bbl): 18 1,428 GEL (sx): 0 475 HEI.I-FUEL (kl!r) : 0,0 12,~

I POTWATE~ (bbl): 183 1.542 BARITE ($x) : 0 6,482 CEMENT (sx) ; 0 5,842

Drills, Permits & lnspection~

DRILL TYPE DATE INSPECTIONS DATE SAFElY DETAIL.S

TRIP DRILL 1/5198 BOP TEST 12/5/98 LTI 2514/98FIRE 10/5/98 NEXT TEST DUE DATE MTI 17/4198PIT DRILL 1/5/9B RIG INSPECTION 17/4198 JSA ongoing

IINCIDENT DAYS SINCE LTA 14 #PTVI! ongoing

Safety Meeling 10/5/98

Casina Pump Data

I CSG LOT PHASE CSGSHOE CSG SHOE PumDD I::l • last 24 hrs Slow PumD Oat00(") MD TVD (mBRT) # TYPE LNR SPM EFF Flow SPP SPM Spp DEPTH MW

1'3,318 " 853 853 r) (%) (gpm (psi) (psi) (m RT) (ppg)

97 30 450 3000 9,41 Nat. 12·P· 6.50

ITYPE LNGTH CSG WT GRD THREAD 2 Nat. 12·P· 6.50 97 40 650 3000 9.4

(m) ID(") Ibslfl 50 825 3000 9.4

Shoejt 14.9 12.4 68.0 1.80 N.VAM 30 490 3000 9.4

1 x Jt 11.5 12.4 68.0 L.80 N.VAM 40 625 3000 9.4

IF/Collar jt 12.3 12.4 68.0 LBO N.VAM 50 800 3000 9.4

62 xjts 713.4 12.4 68.0 L80 N.vAM1 x pup "AU 3.1 12.4 68.0 LBO N.vAMWHjt 5.5 12.4 sa.O L80 N.vAM

II

Copyright IDS Pry Ltd. RbtofB report Mar 16th 1998.1 Page Nurnbe : 2

1

I' 12/05/1998 09: 01 0352722058 PREMIER OIL GEELONG PAG 04/04

Survey MD TVD INCL AZ CORR. '\! DOGLEG N/S EJW TOOL !TYPE

Last Tool Type: Aidrift(mRT) (mRT) DEG (deg) ;..z SECT (mI30m) (m) (m)

(deg) (m)

Magnetic Declination: 12.60 2.202 0,00 Aidrift

rvey method : Min Curvature 2,348 0.00 AIdrift2,489 0.00 AIdrift2,575 1.00 Aldrift2,660 2.00 Aldrift2,661 2.00 AId rift2,738 1.50 AIdrift2,892 2.00 AIdrift


Yo la-2I Report Date:

IIIIIIII

11.05.98

Personnel: on Site;;; 92

JOB TITLE NAME

Drlg Supervisor KnoblN. Drlg Supervisor Harrison

Geologist FrankiewiczGeologist ClotaNorthern Explorer P Mcleod & Milroy

COMPANY NAME

PremierNorthernDowell Sehlum CementAsiatic ROVDowell Schlum MudGeoServicesAnadriJISehlum TestingCorproAlfa Laval

589

23142:321

CopyrIght IDS Pty Ltd, RbtofB report Mar 16th 1998.1

III_IIIIIII

Page Number 3

Please find attached the Daily Drilling report for 10l!'J May 1998.


PAG 01/04

55

o Please Recycle


From: Gordon Hunter

Pages:

Da~e: May 11, 1998

cc:

_ • __ -~ I

"'F ~ !

,\~l~ a j)~\L\,,\Nq

o Please Reply

PREMIER OIL GEELONG

o Please Comment

0352722058

D For Review




Fax:

-Comments:

D Urgent

Phone:

Gordon Hunter

Re:

To~


Regards

Ce·~~

Fax

IIIIIIIeIIIIII-IIIIII1

'111/05/1998 10: 02

-~------------------------,---------,

02/04

$ 73,489$9,( 64,636

$10, 08,205P&A

PAGE

DAILY COST $ :CUM COSTS:AFE COST $ :

AFE BASIS:

12.2513.38

8530.00

Formation Tops - This report cnlyII FORMATION ITOP( nBRT)

OAILY DRILLING REPORT # 37

Yo lIa-2

CUR. HOLE SIZE ,"):

CSG 00 ("):

SHOE NO (m RT);

LEAK-OFF EMW(ppg)

PREMIER OIL GEELONG

3.033.0

11.031.13

CURRENT OF' @ 0600: WOW

PLANNED OP. : RIH with core barrel- core. POOH. Crill ahead,

TD. (m RT):

PROGRESS (m):

DAYS FROM SPUD;

DAYS +/. CURVE:

0352722058

AustraliaBass Basin


Dowell 1-----------1.----------1.--------+--112.581.594.0

10:02

Summary of period 00;00 to 24:00 hrs:

Drill ahead to 3033m. Circulate bottoms up. POOH back reaming whereneccessary. Attempt to RIH with core barrel but weather building, Rackcoring assy back in derrick and test BOP's.

Well DataCOUNTRY

FIELDDRILL CO. ;

RIG:

MUD CO:

RT ABOVE MSL (m) :



Premier Oil

111/05/1998

.1IIIII

Page Number: 1

.50 3,033 Testing BOP's. All rams tested to 300/5800psi for 5/10mins as per programn e.Only annulars remain to be tested

3,033 Stop BOP testing due to building weather, Anchor tension surging to over200kips on anchors #3, #4 & #5. Riser angle moving towards 3deg. POOH t stplug and prepare to unlatch.

3.033 Preparing to unlatch. Slacken off on anchors #7, #8, &#1 in attempt to keep rigover location and ease tension on anchors #3, #4 &#5. Fwd thruster onlyworking at 60% output - overloading above that.

3,033 Prepared to unlatch. Tension on anchors #3, #4 & #5 holding steady. riding cutweather over location

3,033 #4 anchor slipped after surge of >220 kips on anchors #3 &#4. Riser anglegreater than 3deg, Riser very close to edge of moonpooJ. Unlatched riser, ris~r

hanging on hook.3,033 Attempt to bring NEill bow more into prevailing weather to ride out storm easier.

.50

.75

.50

1.25

2.00

1.00


6.00

1.001.503.00

2.004.501.502.50


04:0008:3010:0012:30

FROM TO

00:00 00:30

00:30 01:15

01:15 02:30

02:30 03:30

03:30 04:00

04:00 06:00

FOlW'ard thruster only working at 60% of max output, fuJIoutput needed to hold rig over location when facing largeseas and 40+knot winds which are not directly coming onthe bow, but more on the beam.

18:00 24:00

01:30 02:00

12:30 13:3013:30 15:0015:00 18:00

02:0004:0008:3010:00



Copyright IDS Pry lid. ~btofB report Mar 16th 1998.1

IIIIIIIIIIIII

IACTIVITY FOR PERIOD 00:00 HRS TO 24:00 HRS ON 10.05.98

..I.fROM TO HRS DEPTH ACTIVITY DESCRIPTION

~ ~O:OO 01:30 1.50 3.030 Drilling ahead 3022m - 3030m w/30.45klbs WOB, 160rpm, 3600psi, 680gpr~with 6.5-8,5k ft·lbs torque.

3,030 Flow check after drilling break ( >22m/hr) - OK. Drill ahead to 3033m. Avera~ eROP 35+m/hr

3.033 Circulate bottoms up for sample.3,033 POOH wet, back reaming when overpuJl > 50klbs. Back ream from 2600- 21/1 m3,033 Circulate hole clean. Boost riser down choke and kill lines.3.033 Pump 30bbl weighted slug. POOH to 13 3/8" casing shoe at 853m. Max ove pull

30klbs.3,033 Flow check -OK. POOH to top of BHA.3,033 Handle BHA. Gauge stabs ( all stabs 1/16" UG) Break of bit.3,033 Make up 3 x 6m core barrel sections wI PDC corehead 13mm cutters. Stand

back in derrick.. Drifted bumper subs and jar for 1 11/16" drop in ball.3,033 Retrieve wear bushing, run test plug and test BOP's. Weather building @ 18:30

thrusters started to assist keeping rig over wellhead.

'I 11/05/1998 10:02 0352722058 PREMIER OIL GEELONG PAG 03/04




I Anchor tensions after #4 slipped: -:#1 10-20kips, #2. 20-50kips#3 120-200kips. #4 20-30kips

I#5 100-160kips, #6 40-60kips#7 40-50kips. #8 40-50kips.Prior to slipping #4 was pulling the same tension as #3.

IMud Properties MUD COST FOR TODAY: 56.921 CUMULATIVE MUD COST TO DATE: $214,455

Type: VISCOSITY{ sec 1qt): 48 API FLUID LOSS CI· (ppm) : 42,000 SOLIDS (%vol) : 5.7F'V (cps) : 17 (cm3130min) 4

K+ (ppm): 91.5KCIPHPA 21 H20 (%vol):API FILTER CAKE

FROM; Active YP (lb/l00sq.ft): 32 (32nds inch 1 HARD/Ca (ppm) : ° OIL (%vol) : 0

ITIME: 03:00 GEL 105/1 Om/'30m HTHP FLUID LOSS MBT (ppb eq) ; 7.5 SAND: 0,3

WEIGHT (ppg): 1.13 (lb/100SQft) ; 9 14 0 (cm3l30mln) 0 PM: 0,0 PH: 8.8

TEMP (C): 57 FANN 316/100 8 10 31 HTHP FILTER CAKE PF: .1 PHPA: 0.0{32nds inch} 0

I.it Data for Bit # 7 IADC# 4 4 7 Wear EBEE~JL II B 15fu3~tfa3 3 ICT/II A II E II 1/16 NO

SIZE {"}: 12.25 NOZZLES Drilled over the last 24 hrs Calculated over the b

I MANUFACTURER: HU AVE woe (k-Ibs): 32 run3 x14 METERAGE em) : 11 CUM.METERAGE (m) 295

TYPE: ATM·P18 AVE RPM: 159 X ON BOTTOM HRS ; 1.6 CUM. ON BOT. HRS : 47.9SERIAL # : V05BW FLOW (gpm) : 671 X lADe DRILL. HRS : 1.6 CUM.IADC DRILL HRS 53.3

IDEPTH IN (m RT): 2738 PUMP PRESS, (psi): 3.600 X TOTAL REVS: 15,264 CUM.TOT, REVS: ~56.4B9

DEPTH OUT (m RT) : 3033 HSI (hp/sqi) : 1 X ROP (m/hr): 6.9 ROP (m/hr): 5.5

IBHA#9 length (ft) :226.7 D.C. (1) ANN. VELOCITY (mpm): 194HRS ON JARS: ISTRING WT{k·lbs) : 310 TRQE MAX {tl-Ibs}:

9'044

1D.C. (2) ANN VELOCITY (mpm): 194

WT 6LW JAR(k-lb5): 46 PICK UP WT{k·lbs} : 325 TRQE ON (ft·lbs): 8.500 HW.D.P. ANN VELOCITY (mpm): 133

BHA WT{k·lbs) : 63 SLK OFF WT{k-lbs) : 300 TRQe OFF (ft-Ibs): 3.500 D.P. ANN VELOCITY (mpm) : 133

I BHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL# COMMENT12 1/4" rock bil -12/14"NB Slab cJw float - Hughes ATM-P1S 53.3 VOSBW8"Anderdrift - 8"Pony NMDC - 12 1/4" Stab - Tolco

Anderdrift Icol 107,5 ADB814 New In hole at 2580m

Iring· 8"NMDC· 12 1/4"Stab - 9xS"DC - Jar-

HE hydra jar 76.5 28S1 In hole at 2738m 6/5/983xB"DC - ~o - 1 II HWOP - dart sub - 8 X HWDP.

• «nChorTonslon Al ; 45.0 A2: 45.0 A3: 85.0 A4: 80.0 A5: 75.0

kips) A6: 65.0 A7: 60.0 A8: 50.0 A9: Al0 :

Workboats Location. Fuel Barile Dlwtr Plwtr Cmt Bent Heli Weather & Rig data @ 24:00 hrs

I(kltr) (sx) (bbl) (bb!) (Sl) (sx) (kltr) VOL (kips: ~72.0

WIND SP. (kIS) : 44.0 VISIB.(nm) : 7 RIS.TENS: 11PCommander at rig 695 629 1,919 WIND DIR (deg) :330 CEILING (m) : 2,400 HEAVE (m): 1.5BTide at rig 226 440 PRES.(mbars): 1013 WAVES (m): 3.7 ROLL (deg): 1.5

I

AIR TEMP (C): 15.0 SWELL (m): .6 PITCH (deg) : 3.0

!COMMENTS: All anchors pjgQied.Commander and Brute Tide on location, Mermaid Raider released 02:00

IBulk Stocks Used lin Stock Used / In Stock Used / In Stock Used /In Siock.DRILL WATER (bbl) :163 3.046 FUEL (bbl): 17 1.446 GEL (sx): 0 475 HELI·FUEL (kltr) : 0.0 12.~

POT WATER (bbl) : 0 1.724 BARITE (sx) : 0 6,482 CEMENT (5X) : 0 5,842

I Drills, Permits & Inspection:!:DRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

TRIP DRILL 1/5/98 BOP TEST 10/5198 LTI 25/4/98

IFIRE 10/5/98 NEXT TEST OUE DATE MTI 17/4/98PIT CRILL 1/5/98 RIG INSPECTION 17/4198 JSA ongoingINCIDENT DAYS SINCE LTA 13 #PTW ongoing


ICopyright IDS Ply Ltd. RblotB rel'ort Mar 16th 1998.1 PagQ Number 2

I

Premier Oil

10:02


Yolla-2

'111/05/1'3'38

II Report Date:

0352722058

10.05.98

PREMIER OIL GEELONG PAG 04/04

Casino Pump Data

I CSG LOT PHASE CSG SHOE CSG SHOE PumD Data· last 24 hrs Slow PumD Data00(") MD TVO (mBRT) j TYPE LNR SPM EFF Flow SPP SPM SPP DEPTH MW

13.3/8" 853 853 (") (%) (gpm (psi) (psi) (m RT) (ppg)

1;::=:::;::===-:===~:;::::;:::::::~=:;:==---,:1I11 Nat. 12-P· 8.50 86 97 680 3600 30 450 3000 9.4

I TYPE L.NGTH CSO \NT GRD THREAD 2 Nat. 12-P· 6.50 66 97 40 650 3000 9.4( m) ID (U) Ibslfl 50 825 3000 9.4

Shoe jt 14.9 12.4 68.0 LSO N.vAM 30 490 3000 9.4, xjt 11.5 12.4 68.0 LeO N.vAM 40 625 3000 9.4

I ~/Collarjt 12.3 12.4 68.0 LSO N.vAMII~:;==~~=~=~~~~~=::;;=5=O~=8=O:;0~=3=0=0=0*;::9;::.4~62 xjts 713.4 12,4 68.0 Leo N.vAM III1 x pup "A" 3.1 12.4 68.0 L.SO N.vAM Personnel: on Site =92WHjt 5.5 12.4 68.0 L.SO N.VAM

Page Number 3

MD TVD INCL AZ CaRR. 'V DOGLEG N/S EM! TOOL. rtPE(m RT) (m RT) DEG (deg) AZ SeCT (m/30m) (m) (m)

(deg) (m)

2.202 0.00 Aldrift2.348 0.00 Aldrift2.489 0.00 Aldrift2.575 1.00 Aldrifl2.660 2.00 Aldrin2,661 2.00 Aldrin2,738 1.50 AId rift2.892 2.00 AId rift

Copyright IDS Pty Lid, RbtofB report Mar 16th 1998,1

IJOB TITL.E NAME COMPANY NAME #

orlg Supervisor Knobl Premier 5N. orlg Supervisor Harrison Northern 59

Dowell Schlum Cement 2Geologist Frankiewicz Asiatic ROV 3

I titGeologist Clota Dowell Schlum Mud 1Northern ElI:plorer P Mcleod &Milroy GeoServiees 4

Anadrill 2Schlvm Testing 3

I ~ 2

r.:-==-:- ~===r==£~;;~~~;;~;;;;~;;;;;;~A;lf~a;L.~aV~a~1 ;;;;~;;;;t;;1~

ISurvey

Last Tool Type: AIdriftMagnetic Declination: 12.60I Survey method: Min Curvature

III_IIIIIII



Premier Oil AustralasiaGeelong Operations BasePhone: 0352722101Fax:03S:27:220S8

ellPAG

o Please Recycle

May 10,1998


From: Gordon Hunter

Date:

Pages:

cc:

o Please Reply

, I (.~, .

l\~khr-\ a' -:DtZl J-J-.! N <:t

PREMIER OIL GEELONG

o Please Comment

0352722058

D For Review

Victoria Minerals &Petroleum Ops. Attn: Ahmed Nadji



11: 12

To:

Phone:

Fax:

Re:

-Comments:

o Urgent

Gordon Hunter

Regards

r Jt ~~.\jl:~

Fax

110/05/1998

IIIIIIIeIIIII.eIIIIIII

Summary of period 00:00 to 24:00 hrs: Formation Tops - This report only

Jarfree. RIH to bottom. Drill ahead 2954m· 3016m. Circulate bottoms up II FORMATION ITOP,r BRT)

for sample. Drill ahead 3016m - 2022m.

02

S179.190$8,~ 91,146

$10,108,205

F'&A

PAGE

Page Number: 1

DAILY COST $ :CUM COST $ :AFE COSTS:

AFE BASIS:

12.2513.38

853

0.00


Yolla-2

CUR. HOLE SIZE ("):CSG OD ("):

SHOE TVD (m RT):

LEAK-OFF EMW(PP9)

PREMIER OIL GEELONG

3,022.0

68.030.13

CURRENT OP @ 0600; POOH for core at 3033m

PLANNED OP. : RIH with core barrel - core. F'OOH. Drill ahead.

T.O. (mRT);PROGRESS (m):

DAYS FROM SPUD:DAYS +/. CURVE:

0352722058

.50

.50

2.002.00


2,751.50

1.25

1.001.75

.25 2,954 Lay down washed out drill pipe.4.25 2,954 Attempt to RIH. Pipe stuck. Overpull > 70klbs. Establish circulation and slowl~

build up to 680gpm 3600psi. Work pipe between hook weight 200k - 400klbsDrop circulation rate to 75gpm, 210psi. Start jarring down and working pipe.

2,954 Jar free. Establish rotation, bring up to 11 Orpm. Bring pumps up to 680gpm.3600psi. Work stand several times from 2307m - 2328m.

2,954 RIH and wash to bottom.2,984 Drilling ahead 2954m - 2984m wi 30-45klbs WOB, 160rpm, 3600psi, 680gpn

with 6-7k ft-Ibs torque.2,984 Change swab and liner on #2 pump - piston 3, Circulate on pump #1.2,998 Drilling ahead 2984m. 2998m w/30-45klbs WOB. 160rpm, 3600psi, 680gpn

with 6-7k ft-Jbs torque, Centrifuge running.2,998 Flush riser down kill & choke lines. Take SCR's , Make connection.3,008 Drilling ahead 2998m - 3008m w/30-45klbs WOB. 160rpm, 3600psi, 680gpn

with 6.5-8.5k ft-Ibs torque. Introduce Oxygen scavanger to mud system3,016 Flow check after drilling break (>28mlhr) - OK. Drill ahead to 3016m. Rap

dropping from 12m/hr - 7 m/hr.3,016 Circulate bottoms up for sample.3,022 Drilling ahead 3016m - 3022m w/30-45klbs WOB, 160rpm, 3600psi, 680gprr

with 6.5-8.5k ft-Ibs torque.

1.002.75

1.505.50


AustraliaBass Basin


Dowell 1------------&.--------.......1.--------+--12.581.594.0

11: 12

CTIVITY FOR PERIOD 00:00 HRS TO 06:00 HRS ON 10.05.98 .

01:30 02:00

Exposed coal beds causing tight hole I stuck pipe Consider backreaming features for stabilisers I rollersituations, large amounts of time being spent reamers for next well.backreaming,Mermaid Raider released at 02:00 10/5/98, afteroffloadi"g of containers. Verbal Statement of Factreceived over radio. Faxed statement will follow fromMermaid Marine office.

02:00 04:0004:00 06:00

00:00 01 :30 1.50 3,030 Drilling ahead 3022m - 3030m wI 30-45klbs WOB. 160rpm, 3600psi, 680gprnwith 6.5-8.5k ft-Ibs torque.

3.030 Flow check after drilling break ( >22m/hr) - OK. Drill ahead to 3033m. Avera~ eROP 35+m/hr

3,033 Circulate bottoms up for sample.3,033 POOH wet, back reaming when overpull > SOklbs. Bit at 2543m


FROM TO

0:00 00:150:15 04:30

04:30 05:00

05:00 06:3006:30 12:00

12:00 13:0013:00 15:45

15:45 16:4516:45 18:30

18:30 19:45

19:45 22:3022:30 24:00




MUD CO:

RT ABOVE MSL (m) ;WATER DEPTH@MSL(m):RT TO SEABED (rn) :


Copyright IDS Pty Ltd, RblofB report Mar 16th 1998.1

Premier Oil

110/05/1998

IIIIIIIIIIIIIIIIIIII

--- -

I 10/05/1998 11: 12 0352722058 PREMIER OIL GEELONG PAGf 03



Mud Properties MUD COST FOR TODAY; $4,166 CUMULATIVE MUD COST TO DATE: $207.534

I Type: VISCOSllY( sec I qt ): 47 API FLUID LOSS CI· (ppm): .42.000 SOLIDS (%\101) : 5.7

KCIPHPA PV (cps): 17 (cm3130min) 5 K+ (ppm): 21 H20 (%vol): 91.5API FILTER CAKE

FROM: ActiveYP (Ib/100sq.ft): 33 (32nd6 Inch 1 HARD/Ca (ppm) : 0 OIL (%vol): 0

TIME: 20:00 GEL 10s/10m/30m HTHP FLUID LOSS MBT (ppb eq) : 7.5 SAND: 0.4

I WEIGHT (ppg): 1.13 (lb/100sqft) : 9 14 0 (cm3/30min) 0 PM: 0.0 PH: 8.8

TEMP (C): 57 FANN 3/611 00 8 11 32 HTHP FILTER CAKE0 PF: ,1 PHPA; 0.0

(32nds inch)

r:g~f:gE9:,

I Bit Data for Bit # 7 lADe. 4 4 7 Wear B II G II 02 II R III II II I

SIZE (") : 12.25 NOZZLES Drilled over the last 24 hrs Calculated over Ihe bll runMANUFACTURER: HU AVE WOB (k-Ibs) : 36 3 X14

I TYPE: ATM·P18 Ave RPM: 159METERAGE em) : 68 CUM.METERAGE (m) 2B4

X ON BOTTOM HRS : 11.9 CUM, ON eOT. HRS : 46.3SERIAL#: V05BW FLOW (gpm): 671 X IADC DRIL.L, HRS : 12.2 CUM.IADC DRILL HRS 51.7DEPTH IN (m RT) : 2738 PUMP PRESS. (psi): 3.600 X TOTAL REVS: 113,526 CUM.TOT. REVS: 4 41,225

IDEPTH OUT (m RT) : HSI (np/sqi) : 1 X ROP (m/hr): 5.6 Rap (m/nr): 55

BHA#9 Length (tt) :226.7 D.C. (1) ANN. VELOCITY (mpm): 194

I HRS ON JARS: STRING WT(k-lbs) : 310 TRQE MAX (ft-Ibs): 12,225 D.C. (2) ANN VELOCITY (mpm): 194WT BLW JAR(k-Ibs): 46 PICK UP WT(k·lbs) : 325 TRQE ON (ft-Ibl» 7,719 H,W,D,P. ANN VEL.OCITY (mpm): 133BHA WT(k·lbs) : 63 SLK OFF WT(k-lbs) : 300 TROe OFF (ft·lbs): 3.000 D.P. ANN VELOCITY (mpm) : 133

IBHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL# COMMENT1, 1/4" rock bit -12/14"NB Stab cIw float·

Hughes ATM-P18 51.7 V05BWS"Anderdrifl: - S"Pony NMDC· 12 1/4" Stab - Totco

Anderdrift tool 102.2 ADB814 New in hole at 2580mring - 8"NMDC - 12 1/4"Stab· 9x8"DC· Jar·

HE hydra jar 61.7 2851 In hole at 2738m 6/5/983x8"DC - xlo - 1 x HWDp· dart sub· 8 X HWDP.

IAnchor Tension A1 : 45.0 A2: 65,0 A3: 75.0 A4; 70.0 AS: 70,0

I(kips) A6: 65.0 A7: 70.0 A8: 70.0 A9: A10 :

Workboats Location. Fuel Barite Dlwtr Plwtr emt Bent Hell Weather & Rig data @ 24:00 hI'S(kltr) (sx) (bbl) (bb!) (sx) (SX) (kltr) VOL (kips: ~48.0

IWIND SP. (klS): 21.0 VISIB.(nm) ; 7 RIS.TENS: 11

P Commander at rig 699 629 1.951 WIND DIR (deg) :237 CEILING (m) : 2,300 HEAVE (m): 0.5BTide at rig 226 440 PRES.(mbars): 1019 WAVES (m): 2.8 ROLL (deg): 0.5

._OMMENTS'AIR TEMP (C): 11.0 SWELL (m): 2.8 PITCH (deg) ; 1.5

All anchors piggied.Commander and Brute Tide on location. Mermaid Raider arrived 19:30 .offloading.

Bulk Stocks Used lin Stock Used lin Stock Used lin Stock Used lin Sto k

IDRILL WATER (bbl) : 164 3.209 FUEL (bbl): 16 1,463 GEL. (sx) ; 0 475 HELl-FUEL (kltr) : 0.0 12.

POT WATER (bbl): 0 1.642 BARITE (sx) : 0 6,482 CEMENT (:Ix) : 0 5.842

Drills, Permits & InspectlonE

I DRILL iYPE DATE INSPECTIONS DATE SAFETY DETAILS

TRIP DRILL 1/5/98 BOP TEST 22/4198 LTI 25/4/98FIRE 315198 NEXT TEST DUE DATE MTI 17/4/98PIT DRILL 1/5/98 RIG INSPECTION 1714/98 JSA ongoing

I INCIDENT DAYS SINCe lTA 12 #PTW ongoingSafely Meeting 315198

Pump Data

I Pumn Data· last 24 hrr: Slow Pumc Data# lYPE LNR SPM EFF Flow Spp SPM spp DEPTH MW

(") (%) (gpm (psI) (psi) (mRT) (ppg)

I1 Nat. 12·P· 6.50 66 97 680 3600 30 450 3000 9.42 Nat. 12·P· 6.50 66 97 40 650 3000 9.4

50 825 3000 9.430 490 3000 9.4.40 625 3000 9.4

I 50 800 3000 9.4

Copyrignt IDS Ply Ltd. RbtofB report Mar 161h 1998.1 Page Number 2

I


CasinaCSG LOT PHASE CSGSHOE CSG SHOE00(") MD TVD(mBRl)

13.3/8 " 853 853

TYPE LNGTH CSG \NT GRD THREAD(m) 10 (") Jbs/ft

Shoe jt 14.9 12.4 68.0 LSO N,VAM1 xjt 11.5 12.4 68.0 LSO N,VAMF/Coilar jt 12.3 12.4 68.0 L80 N,VAM62xjts 713.4 12.4 68.0 L80 N.VAM1 x pup "A" 3.1 12.4 68.0 LSO N.VAMWHjt 5.5 12.4 68.0 LSO N.VAM


Yc lIa-2

PAGI 1214I Hl/12l5/1998 11: 12

IIIIII

12135272212158 PREMIER OIL GEELONG

Personnel : on Site = 92

JOB TITLE NAME

Geologist FrankiewiczGeologist ClotaNorthern Explorer P Mcleod 8. Milroy

COMPANY NAME

PremierNorthernDowell Schlum CementAsiatic ROVDowell Schlum MudGeoServloesAnadrilJSchlum TestingCorproAlra Laval

569

23142321

Copyright [OS pty LId. RbtofB report Mar 16th 1998.1 Page Number; 3

MD TVD INCL AZ. CORR. 'V' DOGLEG N/S EfW TOOL TYPE(mRT) (m Rl) DEG (deg) AZ. SECT (mI30m) (m) (m)

(deg) (m)

2,202 0.00 Aidrift2.348 0.00 Aldrifl2.489 0.00 Aldrin2.575 1.00 Aldrin2,660 2.00 Ndrjfl2,661 2.00 AIdrift2,738 150 A1drifl2,892 200 Ndrifl

'

urveYI st Tool Type: Aldriftagnetic Declination: 12.60

Survey method: Min Curvature

IIIIIf'IIIIIII

P. ~1

ACCOUNT REFERENCE : P~6001

TASMANIA DEV£LOPMENTand RESOURCES

TAS FXPI nSlVFS SFRVlr,F..

E>~F'L,ClS I VES

1~-MAY-~~ 1f1:f1R

ttl..-,,-~...~

TasmaniaTASM~'NrAN

I SlJN.

••

~~<.. o~oo

3.00C;" ,y)~) Lo ()~)

PAIDCtftt oooo?./

'2fl 'f- 'l~.

300.1)1)3.00

Amount AmQunt Paid Outstanding

EXPLo:srJES SERViCESAUSTRALIA PTY LTO,~CN 081 960 018

" ". 57-032·57032

TASMANIAN EXPLOSIVtS sa;IVrC'EP.O. £OX 17, DON, TASMANIA. i310 MJSTRAI.IA

7310

Transaction Document Ref NQ

DONTASMANIA

_._-_ ... _---------Date

21/04/98 INVOICE21/04/98 INVOICE

OlJT~' I~NG

•-,..~ :.:~ -~:~:.-~ -.- -.... --'~~ _.~:~~ .. -_.. -~~-~:~~-----~~-~::~ _.- -~. -~::~:~,~~: ~~ ;~:,~~ ".-~~~~; ~~!=,. O.(lU 0.(>0 0.00 (,l.(l(l ;.0.;,,,'0,,,), ,h.:'.OO

Irn._~'~_~"'I_~."__· __ ._'__·· · ' ,__• ..•,~.....,.-.--- _

PLEASE RETURN THIS STATEMENT WITH PAYMENT

TOTAL P.0

ANZ House, Z2 EI izabeth St. Post to : G.P.O. Box 646Hobart. Ph (03) 6233 5824 Hobar~. Tasmania 7001

...,.._ ",_ , .,...:. ,.:.~-._-

,) t·r:····(3:~:·~·-,~:i,;~;~-H i"'I-I"·F< Q ad, -_._-~,,-., r_-:~(~ (:0 J"I Y F' a t"' k Ph (l) ':~) (-~Z·=: ':: 71'!.,~":· '.. .

•..•. l .. ~ '_":__0'_,_._.__ .• .. .. - - - - .- .J~ _

O~ : Any Service Tasmania Outl~t,

I

II

I 09/05/1998 11: 03 0352722058 PREMIER OIL GEELONG PAG 01 "BI

Please find attached the Daily Drilling report for eth May 1998.

Gordon Hunter



o Please Recycle


From: Gordon Hunter

Date: May 9,1998

Pages:

cc:

o Please Reply

..~

~~ :zMlLLIN~! .

o Please Commento For Review


Victoria Minerals &Petroleum Ops, Attn: Ahmed Nadji


-Comments:

Re:

Phone:

o Urgent

Fax:

To:

CRegards

C·~~

Fax

IIIIIIIeIIIIIttIIIIIII

02

S183,823S8,/11,957

$10,108,205

P&A

PAG

Page Numbe : 1

DAILY COST $ :CUM COST $ :AFE COST$:

AFE BASIS:

12.2513,38

8530.00

Formation Tops· This report onlyII FORMATION ITOP( nBRT)


Yolla-2

---------------r------

CUR. HOLE SIZE (U):

CS<30Dn:SHOE TVD (m RT):

LEAK·OFF EMW(ppg)

PREMIER OIL GEELONG

2.954.0

70.029.13

CURRENT OP @ 0600: RIH and wash to bottom after changing out washed OUI drill pipe.

PLANNED OP. : Drill ahead to prognosed coring point. Core



0352722058

.50

,50

.25

.50

1.00

1.00.75

1.50

2.00

1.008.50

.501.50

1.50

1.00

1.00

2.00

AustraliaBass Basin


Dowell 1- - __....... ----' --1.__-- -+__1

12.581.594.0

18:30 10:30


05:00 06:00

04:30 05:00

00:00 00: 15 .25 2,954 Lay down washed out drill pipe.00:15 04:30 4.25 2,954 Attempt to RIH. Pipe stuck. Overpull > 70klbs. Establish circulation and 510\\ Iy

build up to 680gpm 3600psi. Work pipe between hook weight 200k - 400klb .Drop circulation rate to 75gpm, 21 Opsi. Start jarring down and working pipe,

2,954 Jar free. Establish rotation, bring up to 11 Orpm. Bring pumps up to 680gpm,3600psi. Work stand several times from 2307m - 2328m.

2.954 RIH and wash to bottom.

21 :45 22;00

10:30 11:3011:30 20:00

22:00 22:30

22:30 24:00

05:30 07:00

20:00 21:0021:00 21:45

07:00 08:00

03:30 04:0004:00 05:30

00:00 00:30 .50 2,885 Drill 121/4" hole from 2884m - 2885m w/20-40k Ibs WOB, 120-160rpm, 4-6k ft·Ibs torque, 680 gpm, 3600psi.

2,885 Change swab and liner #1 pump - piston 1. With bit off bottom circulating350gpm 1rotating.

2,892 Drill 12 1/4" hole from 2885m - 2892m wi 20-40k Ibs WOB, 120-160rpm, 4-6k ftIbs torque. 680 gpm, 3600psi.

2,892 Rig Service. Take Anderdrift survey - 2deg. Take SCR's2,900 Drill 12 1/4" hole from 2892m - 2900m w/20-40k Ibs WOB. 120-160rpm, 4-6k ft

Ibs torque, 680 gpm, 3600psi. Drilling break from 2897-2900, ROP 25+m/hrflow checked OK.

2,900 Circulate bottoms up for sample of high ROP formation. Lost 600psi pumppressure halfway through bottoms up. Continue with circulation observingpressure loss closely. (Pump pressure down from 3600psi to 3000psi )

2,900 After bottoms up , check surface equipment for pressure loss. All surfaceequipment tested OK.

2,907 Set bit on bottom with 20-30k lbs WOB. 680 gpm, 3000psi. Observe pumppressure closely, starting rotation. Pump pressure stable at 3000psi. ContinL edrilling from 2900m • 2907m. Lost a further 100psi during drilling

2,907 Stop drilling. POOH wet looking for washout. First single of stand #16 off bot omhad washout approx 0.5m below tooljoint, coincidentaly in DP slip area.

2,907 Change out drill pipe single and run back in hole.2,949 Drilling ahead 2907m - 2949m wi 30-45klbs WOB, 160rpm. 3600psi, 680gprn

with 6-7k ft-Ibs torque. Average ROP 4-6m/hr2,949 Top drive service - at same time fixing belt on scalping shaker.2.953 Drilling ahead 2949m - 2953m wi 30-45klbs WOB, 160rpm, 3600psi, 680gprn

with 6-7k ft-Ibs torque. Average ROP 4-6m/hr.2,954 Drilling ahead 2953m - 2954m wi 30-45klbs WOB, 160rpm. 3600psi. 680gprn

with 6-7k ft-Ibs torque. Observe 100psi drop on pump pressure.2,954 Further 350psi pump pressure lost. Check surface equipment for pressure Ie S5.

All surface equipment tested OK.2.954 POOH wet looking for washout. Bottom single of stand #22 off bottom had

washout approx 0.5m above the pin.

00:30 01 :30

08:00 08:30

.=ROM TO HRS DEPTH ACTIVITY DESCRIPTION

01:30 03:30




Drill 12 1/4" hole from 2884-2900m. Circulate bottoms up. Drill 29002907m. POOH 16stds for washed out DP. Drill 2907-2954m. POOH22stds for washed out DP

Well DataCOUNTRYFIELDDRILL co.:RIG:

MUD CO:RT ABOVE MSL (m) :WATER DEPTH @MSL (m) :RT TO SEABED (m) :


Copyright IDS Pry Ltd, RbtofB report Mar 16th 199B.1

Premier Oil

I 0'3/05/1 '3'38 11 : 03

IIIIIIIIIIII

IIIIIII

- -

I 1219/1215/1998 11: 1213 12135272212158 PREMIER OIL GEELONG PAGE 1213




I REMARK / OBSERVATION SOLUTION / RECOMMENDATION

Nature of washouts does not look like it is caused by DPslip dyes. but rather due to corrosion, pitting from inside

I or flexing across friction welded area. Critical rotaryspeed had been addressed when setting drillingparameters and was not a likely cause of washouts.

IStuck pipe looked to be caught at the upper stringstabiliser on a coal bed which can be identified on themudlog.Problems asoeiated with tripping in and out through the Casing reamer shoe for 9 5/8" string should be

Icoal seams between 2200 ·2580m could give major considered to ensure getting casing to bottom.problems when it comes to running casing.

Mud Properties MUD COST FOR TODAY: $7.327 CUMULATIVE MUD COST TO DATE: 5203,367

I -ype: VISCOSITY( sec I qt ): 49 API FLUID LOSS CI- (ppm) : 41.000 SOLIDS (%vol) : 5.8

_eCIPHPA PV (cps): 17 (cm3/30min) 4 K+ (ppm): 31000 H20 (%vol) : 91.5

YP (lb/100sq.fl): 33API FIL.TER CAKE HARD/Ca (ppm) : 0 011. (%vol): 0

FROM: Active (32nds inch 1

TIME: 20:00 GEL 10s!10m130m HTHP FLUID LOSS MBT (ppb eq) : 7.5 SAND: .6

I WEIGHT (ppg): 1.13 (lb/100sqfl.) : 9 14 0 (cm3/30min) 0 PM: 0.0 PH: 9.0

TEMP (C): 54 FANN 3/6/100 8 11 31 HTHP FILTER CAKE PF: .2 PHPA: 0.0(32nds Incn) a

I Bit Data for Bit # 7 IADell 4 4 7 Wear E3~r=gE9~~~ttgSIZE ("): 12.25 NOZZLES Drilled over the last 24 hrsMANUFACTURER: HU AVE WOB (k-Ibs):

Calculated over the b t run34 3 X14

IMETERAGE (m) : 70 CUM.METERAGE (m) 216

TYPE: ATM-P18 AVE RPM : 159 X ON BOTTOM HRS : CUM. ON BOT. HRS: 34.416.0SERIAL#: V05BW FLOW (gpm) : 671 X IADC DRILL. HRS : 19.5 CUM.JADC DRII.L. HRS 39.5DEPTH IN (m RT): 2735 PUMP PRESS. (psi): 3,600 X TOTAL REVS : 152.163 CUM.TOT. REVS: 27,699

I DEPTH OUT (m RD : HSI (hp/sql) : 1 X ROP (m/hr); 3.6 ROP (m/hr): 5.5

BHA#9 Length (ft) :226.7 D.C. (1) ANN. VELOCITY (mpm): 194

I HRS ON JARS: STRING WT(k-lbs) : 300 TRQE MAX (ft-Ibs): 12,661 D.C. (2) ANN VELOCITY (mpm); 194wr BLW JAR(k-lbs): 46 PICK UP Wf(k-Ibs) : 310 TRQE ON (ft-Ibs): 7,286 HW.o.P. ANN VEL.OCITY (mpm): 1338HA wr(k·lbs) : 63 SLK OFF WT(k·lbs) : 285 TRQE OFF (ft-Ibs): 3,000 D.P. ANN VELOCITY (mpm) : 133

dHA DESCRIPTION; TOOL DESCRIPTION HRS SERIAL # COMMENT121/4" rock bit ·12/14"NB Slab cJw floal-

Hughes ATM-P18 39.5 V05BWB"Anderdrift - 8"Pony NMDC • 12 1/4" Stab - Totcoring - 8"NMDC - 12 1/4"Stab· 9x8"DC • Jar· Anderdrifltool 86.0 ADB814 New in hole at 2580m

3xS"DC - ~o - 1 x HWDP· dart sub· 8 X HWDP. HE hydra jar 49.8 2851 In hole at 2738m 6/5/98

IAnchor Tension A1 : 45.0 A2: 70.0 A3: 80.0 A4: 65.0 AS: 70.0

I(kips) A6: 60.0 A7; 70.0 AS: 70.0 A9: MO:

Workboats Location. Fuel Barite D/wtr P/wtr Cml Bent Heli Weather & Rig data @ 24:00 hrs(kltr) (sx) (bbl) (bbl) ($X) (sx) (kllr) VDL (kips: 200.0

IWIND SP. (Ids) ; 35.0 VISIB.(nm) : 8 RIS,TENS: 11

P Commander at rig 704 629 1.353 WIND DIR (deg) :230 CEILING (m) : 2,300 HEAVE (m): 1.0BTide at rig 232 490 PRES.(mbars): 1014 WAVES (m): 4.1 ROLL (d8g): 0.5

AIR TEMP (C): 12.0 SWEL.L. (m): 3.5 PITCH (deg 2.0

I!COMMENTS: All anchors piQgied.PAX off 9 PAX on 6 Commander and Brute Tide on location.

Bulk Stocks Used lin Stock Used lin Stock Used lin Stock Used /11'1 Stc ck

IDRILL WATER (bb!):O 3.373 FUEl. (bbl): 16 1,479 GEL (sx): 0 475 HEL.I-FUEL (kltr) ; 0.5 12 .4

PQTWATER (bbl): 0 1,560 BARITE (sx) ; 0 6,482 CEMENT (:Ix) : 0 5,842

ICopyright IDS Pty Ltd, RbtofB report Mar 16th 1998.1 Page Numbe : 2

I

II 09/~5/1998 11:03 0352722058 PREMIER OIL GEELONG PAG 04



Yolla-2

MD 1VD INCL AZ. CORR. 'V' DOGLI:G N/S EfW TOOL TYPE(m RT) (mRT) DEG (deg) AZ SECT (m/30m) (m) (m)

(deg) (m)

2,202 0,00 AldrJft2.348 0.00 Aid rift2,489 0,00 Aldrjft2,575 1.00 Aidrift2.660 2.00 Aid rift2.661 2.00 Aidrift2,738 1,50 Aidrift2.89.2 2.00 Aidrift

569

23142321

#COMPANY NAME

PremierNorthernDowell Schlum CementAsiatic ROYDowell Schlum MudGeoServicesAnadrillSchlum TestingCorproAlfa Laval

Slow PumD Oatspp SPM SPP DEPTH MW(psi) (psi) (m RT) (ppg)

3600 30 460 2892 9,540 575 2892 9.550 700 2892 9,530 400 2892 9.540 550 2892 9.550 700 2892 9.5

P"mc Data -last 24 hI'S

1 Nat. 12·P· 6.50 67 97 6802 Nat. 12·P· 6.50 67 97

# TYPE LNR SPM EFF Flow(") (%) (gpm

Geologist ~ranklewlez

Geologist ClotaNorthern Explorer P Mcleod & Milroy

Drlg Supel¥isor Knob!N, Drlg Supervisor Harrison

DATI: SAFETY DETAILS

22/4/98 lTI 25/4198MTI 17/4/98



Pump Data

N,VAMN.YAM

N.VAMIII~~=~=~=~~~~~~~~~~~~~~N.YAMNVAM Personnel: on Site = 92N.VAM

JOB TITLE NAME

L80L80LSOLSOL80LSO

GRD THREAD

INSPECTIONS

853 853

BOP TESTNEXT TEST DUE DATERIG INSPECTIONDAYS SINCE LTA

LNGTH CSG 'NT(m) 10 (") Ibs/ft

14.9 12.4 68.011.5 12.4 68.012.3 12.4 68.0

713.4 12.4 68.03.1 12.4 68.05.5 12.4 68.0

LOT PHASE CSG SHOE CSG SHOEMD 1VD (meRT)

DRILL TYPE DATE

TYPE

CSG00(")

13.3/8 "

TRIP DRILL 1/5/98FIRE 3/5/98PIT DRILL 1/5/98INCIDENT

Casina

SUrley

Last Tool Type: AIdrift


Drills, Permits & Inspection\!

Shoejthjt

l_co~larjt'~xJts

. ... fiT1 x pup "A"IIWHjt

I

I

III

IIIIIIIIIIIII

Copyright IDS pty Ltd. RbtofB report Mar 16th 1998,1 Page Number: 3

I 05/05/1998 09: 12 0352722058 PREMIER OIL GEELONG PAG 01/04

6(J

Please find attached the Daily Drilling report for 5~ May 1998.


Premier Oil AustralasIaGeelong Operations BasePhone: 0352722101Fax: 0352722058

D Please Recyele


Date: May 6, 1998

Pages:

cc:

From: Gordon Hunter

D Please Replyo Please CommentD For Review




Fax:

Re:

-Comments:

Phone:

Gordon Hunter

D Urgent

To:

Regards

Ce·~~

Fax

IIIIIIIeIIIII.IIIIIII



Mud Properties MUD COST FOR TODAY: $1' ,9a1 CUMULATIVE MUO COST TO DATE: $178.801

Type: VISCOSITY( sec 1ql ): 51 API FLUID LOSS5

CI- (pf)m) : 39,000 SOLIDS (%vol) : 4.9

KCIPHPA PV (cps): 16 (cm3130min) K+ (ppm): 28000 H20 (%vol): 92.5API FILTER CAKE

FROM: PityP (Ib/100sq.ft): 36 (32nds inch , HARD/Ca (ppm) : 0 OIL (%vol) : 0

TIME; 22:00 GEL 10s/10m130m HTHP FL.UID I.OSS MBT (ppb eq) : 0.0 SAND: 0.4

WEIGHT (ppg); ",1 (lb/100sqft) ; 9 11 0 (cm3130min) 0 PM: 0.0 PH: 9.0

TEMP (C): 61 FANN 3/61100 9 11 33 HTHP FII.TER CAKE PF: .1 PHPA: 0.0(32nds inch) 0

0:00 01 :00 1.00 2,738 Pull 5 stands wet. Slug 30bbl weighted pill. POOH to 2565m. Overpull up to20klbs

01:00 01 :30 .50 2,738 Overpull 70klbs plus. M/U top drive, work tight hole 2567 - 2565m while rota ing,no circulation.

01 :30 01 :45 .25 2,738 Work tight hole 2567 - 2560m while rotating and circulating. Pull free - wast andream stand.

01:45 06:00 4.25 2,738 Pull 5 stands wet. Slug 30bbl weighted pill. POOH to 13 3/8" casing shoe. P lJingup to 50klbs over @ 2422, 2250 &2225. Flow checked well at 04:00 - OK

$ 67,461$8. 28,133

$10. 08.205P&A

PAG 02/04

Page Number: 1

DAILY COST $ ;CUM COST $ :AFECOSTS:

AFE BASIS:

Fonnation Tops - This report cnlyII FORMATION ITOP(TlBRn

DAilY DRILLING REPORT # 32

Yc lIa-2

CUR. HOLE SIZE ("): 12.25CSG OD ("): 13.38

SHOE TVD (m Rn; 853

LEAK-CFF EMW(PPSl) 0.00

PREMIER OIL GEELONG

2,738.0

102.026.13

CURRENT OP @ 0600: POOH for bit trif). Bit at 13 318" easing shoePLANNED OP.: RIH, Drill ahead to coring point. Core.

T.D. (mRT):PROGRESS (m):

DAYS FROM SPUD:DAYS +1- CURVE:

0352722058

2.75 2,652 Drill 12 1/4" hole 2636-2652m wI 120prm, 35-45klbs WOB, 700gpm, 3600p~ i.ROP +1- 10m/hr.

1.25 2,663 2652- 2656m, 4m drilling break flow checked OK. Drill 12 1/4" hole 2652-26 3mwI 120prm, 3S-45klbs WOB, 700gpm, 3600psi. ROP +1-10m/hr. Bottoms u~

from drilling break gave max 36% gas in returns.2,663 CirCUlated drilled gas from returns prior to making connection. Take Anderdrift

survey - 2deg @ 2660m, using 500gpm flowrate, after connection.2,671 Drill 12 1/4" hole 2663-2671 m wI 120prm, 35-45klbs WOB, 700gpm, 3600psi.

ROP +1- 10m/hr. Anderdrift survey taken at 2661m confirming 2deg deviatio .2,694 Drill 12 1/4" hole 2671-2694m w/100-160rpm, 30-45klbs WOB. 5-8k ft-Ibd

torque, 705gpm, 3600psi. Changed drilling parameters WOB & RPM as dict~ted

by formation drilled. Av ROP 5/hr2,694 Make connection after back reaming 1circulating stand for 5 mins - Take SCR's2,738 Drill 12 1/4" hole 2694-2738m wi 110rpm, +1- 45klbs WOB, 5-8k ft-Ibd torqUE

705gpm, 3600psi. Av ROP @2695m 4.5/hr. Av ROP @2700m 6.1 m/hr, Av FOP@2704m 2.7m/hr. Av ROP @2722m 8mhr, Av ROP @ 2738m 3.4m Ihr

2,738 Circulate bottoms up. Take Anderdrift survey =1.5deg. Flow check OK


AustraliaBass Basin


Dowell t---------.....Io----------I.--------+---I12.581.594.0

·0:00 02:45

04:00 04:45 .75

04:45 06:00 1.25

06:00 10:30 4.50

10;30 11:00 .5011:00 22:30 11.50

22:30 24:00 1.50

02:45 04:00

FROM TO




Drilled 12 1/4" hole from 2636m -2738m, CirCUlate bottoms up prior toPOOH

Well DataCOUNTRYFIELODRILL CO. :RIG:

MUD CO:RT ABOVE MSL (m) :WATER DEPTH @MSL (m) :RT TO SEABED (m) :

Copyright IDS Ply Ltd. Rbtof8 report Mar 16th 1998.1


Premier Oil

05/05/1998 09:12IIIIIIIIIIIIIIIIIIIII


I, Premier Oil CAlLY DRILLING REPORT # 32


Bit Data for Bit # 6 IADC,. 4 1 7 Wear ~~~~r=gEj~tE9I SIZE (") : 12.25 NOZZLES Drilled over the last 24 hrs ~n.mCalculated over the bMANUFACTUReR: Re AVE WOB (k·lbs): 44 3 x14TYPE: HP41HLK AVE RPM: 125

METERAGE (m) : 102 CUM.MeTERAGE (m) 158

IX ON BOTTOM HRS : 20.3 CUM. ON BOT. HRS : 30.4

SERIAL#: 4308108 FLOW (gpm) : 703 X IADC DRILL. HRS : 22.5 CUM.IADC DRILL HRS 35.5DEPTH IN (m RT) : 2580 PUMP PRESS. (psi): 3,600 x TOTAL REVS : 152,400 CUM.TOT. REVS: ~s.oOODEPTH OUT (m RT) : 2738 HSI (l'iplsqi) : 1 X ROP (mlhr): 4.5 ROP (m/hr): 4.5

I BHA#8 Length (tt) :198.4 D.C. (1) ANN. VELOCITY (mpm): 200HRS ON JARS: I STRING WT(k-lbs) : 282 I TRQE MAX (ft-Ibs): 11.790 I D.C. (2) ANN VELOCITY (mpm); 200

I \NT" BLW JAR(k-lbs): 40 PICK UP WT(I<;-Ibs) ; 290 TRQE ON (ft-Ibs): 6.013 HW.D.P. ANN VELOCITY (mpm): 138BHA WT(k-lbs) : 59 SLK OFF WT(k-lbs) : 275 TRQE OFF (ft-Ibs): 4.000 D.P. ANN VELOCITY (mpm) : 138

BHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL # COMMENT

I121/4" rock bit -12114"NB Stab cIw float·

REED HF'41HLK 12 1/4" bll 35.5 LJ4759"Anderdrift - 8"Pony NMDC - 12 1/4" Stab· TotcoAnderdrifllool 36.2 ADB814 New in hole at 2580mIn9 - 8"NMDC - 12 1/4"Stab - 6x8"DC • Jar-HE hydra jar 296.0 2872 Used in 17112" section3xS"DC - '1.10 - 1 x HWDP - dart sub - 8 X I-M'DP.

I Anchor Tension A1 : 40.0 A2: 50.0 A3: 70.0 A4: AS: 70.0

(kips) AS: 70.0 A7; 75.0 AS: 70.0 A9: A10 ;

I Workboats Location. Fuel Barite OMr PMr eml Bent Heli Weather & Rig data @ 24:00 hI'S(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VDL (kips: 522.0

M. Raider at rig 136 240 91 WIND SP. (kts) : 13.0 VISI6.(nm) : 10 RIS.TENS: 11

IWIND DIR (deg): 75 CEILING (m) : 2,400 HEAVE (m) 0.5PRES.(mbars): 1015 WAVES (m): 1.7 ROLL (deg): 0.5AIR TEMP (C): 15.0 SWELL (m); 2.7 PITCH (deg : 1.0

[COMMENTS: All anchors piggied. Tension meter on #4 winch broken. 6 PAX off 5 PAX on. Raider on location. Edward J Farnie relea ed at

I18:00

Bulk Stocks Used lin Slock Used lin Stock Used lin Stock Used lin Stor:x

IDRILL WATeR (bbl) ;498 1.309 FUEL (bbl): 15 1,525 GeL (sx): 0 475 HELI·FUEL (kltr) ; 0.0 132

POT WATeR (bbl); 0 1,623 BARITE (sx) : 0 6,482 CEMENT (sx) ; 0 5,842

rills, Permits & Inspection!.

I DRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

TRIP DRILL 1/5/98 BOP TEST 22/4/98 LTI 2514/98FIRE 3/5/98 NEXT TEST DUE DATE MTI 17/4/98

IPIT DRILL 1/5198 RIG INSPECTION 17/4/98 JSA ongoingINCIDENT DAYS SINCE LTA 9 #F'TVV ongoing

Safety Meeting 3/5198

Caslml Pump Data

I CSG LOT PHASE CSGSHOE eSG SHOE Pumn Data -last 24 hI'S Slow Pumn OatODn MD TVD(mBRT) '# TYPE LNR SPM EFF Flow SPP SF'M SPP DEPTH MW

13,3/8 " 853 853 (") (%) (gpm (pSi) (psi) (m RT) (ppg)

Nat. 12-P, 97 703 3600 30 675 2693 9.2

I1 6.50 70

TYPE LNGTH CSG \NT GRD THREAD 2 Nat. 12-P' 6.50 70 97 40 825 2693 9.2(m) ID (") Ibslft SO 925 2693 9.2

Shoejt 14.9 12.4 68.0 LeO N.VAM 30 700 2693 9.2

1 xjt 11.5 12.4 68.0 L80 N.VAM 40 800 2693 9.2

I FfColiar jt 12.3 12.4 68.0 LSO N.VAM 50 975 2693 9.2

62xjls 713.4 12.4 68.0 Leo N.VAM1 x pup "A" 3.1 12.4 68.0 LSD N,VAMWHjt 5.5 12,4 68.0 LSO N,VAM

II

Copyright IDS Pty Ltd. RbtofB report Mar 16th 199B.1 Page Numbe 2

I



I Report Date: 05.05.98 Yc. lIa-2


I JOB TITLE NAME COMPANY NAME #

Drl9 Supervisor Knobl Premier 5N. Orl9 Supervisor Harrison Northern 71

IDowell Schlum Cement 2

Geologist Frankiewicz Asiatic ROV 3Geologist Clota Dowell Sehlum Mud 1Northern Explorer P Mcleod & Nicoll GeoServices 4

Anadrill 2

I Sehlum Testing 3Corpro 2

ISurvey MD TVD INCL AZ. CORR. ·v DOGLEG N/S EM! TOOL TYPE

Last Tool Type: Aidrift (mRT) (m RT) DEG (deg) lIZ. SECT (m/30m) (m) (m)(deg) (m)

Magnetic Declination: 12.60 1,994 0.00 Aldrin

I urvey method : Min Curvature 2,202 0.00 .AJdrift2,348 0.00 AId rift2,489 0.00 AId rift2.575 1.00 A1drifl2,660 2.00 Aldrift

I 2.661 2.00 A1drrft2.738 1.50 A1drift

III ~

I.eIIIIII

Cop)'rightlDS F'ty Ltd. RblofB report Mar 16t!'! 1998.1 Page Number 3

I


01/05

~7PAG

o Please Recycle


Pages:

Date: May 5, 1998

cc:

From: Gordon Hunter

o Please Reply

PREMIER OIL GEELONG

D Please Comment

0352722058

D For Review




-Comments:


Re:

Regards

Gordon Hunter

o Urgent

Fax:

Phone:

To:


Fax

I 0~/05/1998 09: 03

IIIIIIIeIIIIIf'IIIIIII

-- ------- ---------------..,.-----"""1

02/05PAG

$226,852$6,040,672

$10,1 D8,205

P&A


AFE BASIS:

12.2513.38

6530.00

Formation Tops - This report onlyI FORMATION ITOP(n 6R"T)


Yo la-2

CUR. HOLE SIZE ("):CSGOD(") :

SHOE TVD (m RT):

LEAK-OFF EMW(ppg)

PREMIER OIL GEELONG

2,636.056.0

25.13

CURRENT OP @ 0600: Drill 12 1/4" hole at 2671m

PLANNED OP.: Drill ahead to coring point. Core.

T.D. (m R"T):PROGRESS (m):

DAYS FROM SPUD;DAYS +/. CURVE:

0352722058

AustraliaBass Basin

Northern OffshoreNorthern EXCIlorer III

Dowell 1- --'- ---1. -+__12,581.594.0



M/U new tri cone bit, RIH, Drill 2580m to 2636m. Drilling volcanic's.

Well DataCOUNTRY

FIELDDRILL. CO. ;RIG:

MUD CO;

RT ABOVE MSL (m) :WATER DEPTH @MSL (m) :

RT TO SEABED (m) :


Premier Oil

I 05/05/19'38 0'3: 03

IIIIII



00:00 02:45 2.75 2,652 Drill 12 1/4" hole 2636-2652m w/120prm, 3545klbs WOB, 700gpm, 3600psi.ROP +/- 10m/hr.

02:45 04:00 1.25 2,663 2652- 2656m, 4m drilling break flow checked OK. Drill 12 1/4" hole 2652-26E 3mw/120prm, 3545klbs WOB, 700gpm, 3600psi, ROP +/- 10m/hr. Bottoms upfrom drilling break gave max 36% gas in returns.

04:00 04:45 .75 2,663 Circulated drilled gas from returns prior to making connection. Take Anderdrftsurvey - 2deg @ 2660m, using 500gpm f1owrate, after connection,

04:45 06:00 1.25 2,671 Drill 12 1/4" hole 2663-2671m w/120prm, 3545klbs WOB, 700gpm, 3600ps.ROP +/-10m/hr. Anderdrift survey taken at 2661m confirming 2deg deviatior .

Page Number: 1


2.25 2,580 POOH to surface - rack pipe in derrick1.25 2,580 Breakout out BD447 PDC bit and M/U new REED tricone bit EHP41 HLK bit <! -1-

7 dressed with 3x 14's. Breakout Anderdrift tool and M/U new Anderdrift to B ~A.Gauge stabs - NB stab 1/16" UG, string stabs OK

3.00 2,580 RIH to to 133/8" casing shoe. Function test Anderdrift tool - OK. Function te~t

BOP's and failsafes.1.00 2,580 Slip and cut drilling line.3.00 2,580 Continue RIH to 2539m. Tag 41m offill (possilbly due to relaxing of hole afte

MW reduction from 9.4ppg (1,135g) to 9.1ppg (1.09sg»..50 2,580 Wash down to bottom

1.00 2,581 Break in bit with 100rpm,10-20k WOB, 2.5-5k ft-Ibs, 706gpm, 3600psi, from2580 to 2581 m. Formation appeared to be very hard. Slow ROP with light brE akin parameters.

1.00 2,583 Continue drilling from 2581 - 2583m w/11 0-60rpm 35-45klbs WOB, 4-5.5k ft Ibstorque, 703gpm, 3600psi. Shakers loaded with cutting and cavings on botton sup. 3% C02 observed.

.50 2,583 At 2583m high erratic torque with string stalling and temporary stuck pipe. Wprkbit through high torque area.

1.00 2,586 Commence drilling ahead from 2583m with 145-150rpm, and +/- 20k Ibs WOBuntil smoother torque pattern observed at 2586m

.50 2,588 Continue drilling with increased WOB to 35klbs, 140rpm 3.5-6.5k ft-Ibs torquEfrom 2586 - 2588m. Instantaneous ROP at 2585m +/- 4mhr

1.50 2,594 Increase RPM 150-160rpm other parameters as above. Torque 5-8k ft-Ibs.Drilling 2588- 2594m. Instantaneous ROP at 2590m, 10-20m/hr but contd str ngstalling made drilling ahead very difficult. (Heave compensator & Interbeddedformations)

16:30 24:00 7.50 2,636 Drill 12 1/4" hole 2594-2636m w/120prm, 35-45klbs WOB, 700gpm, 3600ps.Samples showed almost 100% volcanics (Dolerite) from 2580 - 2613m. Veryslow ROP +/-4m/hr. From 2613m drilled homogeneous siltstone/shale forma ionat +/- 10m/hr,


Copyright IDS Pty L.td, RbtofB report Mar 16th 1996.1

FROM TO

I.~:oo 02:152:15 03:30

I 03:30 06:30

06:30 07:30

I 07:30 10:30

10:30 11:00

I11:00 12:00

12:00 13:00

I13:00 13:30

I 13:30 14:30

14:30 15:00

15:00 16:30

IIIIIII

-~

I 05/05/19'38 0'3:03 0352722058 PREMIER OIL GEELONG PAG 03/05




I Anderdrift survey at 2575m gave 1deg. New survey tooltook 1Omin to run through its pulse cycles. Attemptedsurvey at 2536m with 529gpm f10wrate - no pulses.

I Mud losses at the start of the bit run from 2580m -2583m • 20bph, Thereafter 5 bph which can be attributedto solids control losses and hole fin.

I Mud Properties MUD COST FOR TODAY: 510.941 CUMULATIVE MUD COST TO DATE: $166.819

Type: VISCOSIi'V( see 1qt ): 49 A~I FLUID LOSS CI· (~~m): 40,000 SOLIDS ("Iovol) ; 4,4PV (cps): 15 (cm3130mln) 5 K+ (ppm): 26000 H20 ("Iovol): 93.0KCIPHPA API FILTER CAKE

I FROM: FL y~ (lb/100sq.ft): 32 (32ndsineh 1 HARD/Ca (ppm) ; 0 OIL (%vel): 0

TIME: 22:30 GEL 10s/10m130m HTHP FLUID LOSS MaT (ppb eq) : 0.0 SAND: 0.7

WEIGHT (ppg): 1,11 (lb/100sqft) : 8 10 0 (cm3l30min) 0 ~M: 0.0 PH: 9.2

TEMP (C): 57 FANN 3/6/100 6 10 29 HTHP FILTER CAKE PF: .3 PHPA: 0,0(32nds inch) 0

I it Data for Bit # 5 IADC# M 4 3 3 Wear EEEE~~EE~~t~o 1 WT NITIS X 1/16 NO

ISIZE(") ; 12.25 NOZZLES Drilled over the last 24 hrs Calculated over the bJI runMANUFACTURER: HU AVE WOB (k-Ibs) : 0 :2 X18TYF'E: BD447 AVER~M :

METERAGE (m): 0 CUM.METERAGE (m) 2740 6X14 ON BOTTOM HRS : 0.0 CUM, ON eOT. HRS ; 37.3

SERIAL#: 1902101 FLOW (gpm): 0 X IADC DRILL. HRS : 0.0 CUM.IADC DRILL HRS 43.8

I DEF'TH IN (m RT) : 2306 PUMP PRESS, (psi); 0 X TOTAL REVS : 0 CUM.TOT. REVS: 0DEPTH OUT (m RT) : 2580 HSI (hp/sqi) : 0 X ROP (m/hr): ROP (m/hr): 6.3

Bit Data for Bit # 6 IADC # 4 1 7 Wear r:g~~E9~~~ttgI SIZE(") : 12.25 NOZZLES Drilled over the last 24 hrsMANUFACTURER: RE 39

Calculated over the bi runAVE WOB (k-lbs): 3 X14 METERAGE (m) : 56 CUM.METERAGE (m) 56

ITYPE; HP41HLK AVE RPM : 116 X ON BOTTOM HRS: 10.1 CUM. ON BOT. HRS ; 10.1SERIAL#: U4759 FLOW (gpm) : 700 X IADC DRILL. HRS : 13.0 CUM.IADC DRILL HRS 13.0DEPTH IN (m RT) : 2580 PUMP PRESS. (psi): 3,439 X TOTAL REVS; 70,157 CUM,TOT. REVS: 70,157DEPTH OUT (m RT) : HSI (hp/sqi) : 1 X RO~ (m/hr): 4.3 ROP (m/hr): 4.3

I BHA#7 Length (tt) :198.4 D.C. (1) ANN. VELOCITY (mpm): 214HRS ON JARS: STRING WT(k-lbs) : 272 ITRQE MAX (ft-Jbs): 14,881 I D.C. (2) ANN VELOCITY (mpm): 214

I 'NT BLW JAR(k·lbs): 40 PICK UP WT(k-lbs) : 268 TRQE ON (ft-Ibs); 6,564 H.W,D.P. ANN VELOCITY (mpm): 147

BHA WT(k-lbs) ; 59 SLK OFF W1"(k-lbs) : 278 TReE OFF (ft·lbs): 4,000 D,P, ANN VELOCITY (mpm) : 147


I121/4" PDC bit -12/14"NB Stab ctw float-

80447 PDC bit 43.8 19021018"Anderdrift· 8"Pony NMDC - 12 114" Stab - Totco

6" Hydra Jar 282.1 2872 Used in 17 112" sectionring - 8"NMDC - 12 1/4"Stab - EixS"OC - Jar-3x8"DC • xlo • 1 x HWDP - dart sub - axHWDP. 6" Anderdrlft 289.4 ADT811 Used in all sections

I BHA#S Length (tt) :198.4 D.C, (1) ANN. VELOCITY (mpm): 214HRS ON JARS : STRING WT(k.lbs) : 277 TRQE MAX (ft-Ibs): 13,795 D.C. (2) ANN VEL.OCITY (mpm); 214

IWT BLW JAR(k·lbs): 40 PICK UP WT(k-lbs) ; 282 TReE ON (ft-Ibs): 5,617 H.W.D.P. ANN VELOCITY (mpm): 147

BHA VVT(k-lbs) : 59 SLK OFF WT{k-lbs) : 272 TReE OFF (ft-Ibs); 4,000 D.P, ANN VELOCITY (mpm) : 147

BHA DESCRIPTION; TOOL DESCRIPTION HRS SERIAL # COMMENT121/4" rock bil·12114"NB Stab c:twfloat- REED HP41HLK 121/4" bit 13.0 LJ4759

I S"Anderdrift· 8"Pony NMDC - 12 1/4" Stab - TotcoAnderddft tool 13.0 ADB814 New in hole at 2S80mring· 8"NMDC - 12 1/4"Slab - 6x6"OC - Jar-HE hydra jar 273.6 2872 Used in 17 1/2" section3xS"DC - X/O - 1 x HWO~ - dart sub - SX HWDP.

II

Copyright IDS Ply Ltd. RbtofB report Mar 16th 1998.1 Page Numb9 : 2

I

I----

05/05/1598 09:03 0352722058 PREMIER OIL GEELONG PAG 04/05



IBHA#8 Length (ft) : D.C. (1) ANN. VELOCITY (mpm): 0HRSON JARS: ISTRING wr(~-lbS) : ITRQE MAX (ft·lbs): I

D.C. (2) ANN VELOCITY (mpm): 0WT 6~W JAR(k·lbs): PICK UP WT(k-lbs) : TRQE ON (ft·lbs): H.W.D.P. ANN VELOCITY (mpm): 0SHA wr(k·lbs) : SLK OFF WT(k.-lbs) ; TRQE OFF (ft-Ibs): D.P. ANN VELOCITY (mpm) : 0

I BHA DESCRIPTION: I TOOL DESCRIPTION I HRS SERIAL# I COMMENT I

I Anchor Tension A1 : 40.0 A2.: 55.0 A3: 70.0 A4: AS: 70.0

(kips) AS: 70.0 A7: 75.0 AS: 70.0 AS: A10 :

I Workboats Location. Fuel Barite Dlwtr Plwlr Cmt Bent Hali Weather & Rig data @ 24:00 hrs(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VOL (kips: 399.0

M. Raider at rig 136 566 151 WIND SP, (kts) : 25.0 VISIB.(nm) : 10 RIS.TENS: 11I Edward J. Fairnie at rig WINO DIR (deg): 95 CEILING (m) : 2,500 HEAVE (m): 0.5PRES.(mbars): 1022 WAVES(m) : 1.5 ROL~ (deg); 0.5

tCOMMENTS'AIR TEMP (C): 15.0 SWELL (m): 2.4 PITCH (deg): 1.0

All anchors piggied. Tension meter on #4 winch broken. No helicopters. Raider & Edward J Famie on location.

I Bulk Stocks Used /In Stock Used /In Stock Used /In Stock Used /In St( c~DRILL WATER (bbl) ;359 '.807 FUEL (bbl): 15 1.540 GEL (sx): 0 475 HEll-FUEL (kltr) : 0,0 1 ,2

I POT WATER (bbl) : 183 1,567 BARITE (sx) : 0 6,482 CEMENT (sx) : 0 5,842

Drills, Permits & Inspections:


TRIP DRILL 1/5/98 BOP TEST 2214/98 LTI 25/4198FIRE 3/5/98 NEXT TEST DUE DATE MTI 17/4/98PIT DRILL 1/5/98 RIG INSPECTION 1714/98 JSA ongoing

IINCIDENT DAYS SINCE LTA 8 #P1W ongoing

Safely Meeting 315/98

Casina Pump Data

ICSG LOT PHASE CSGSHOe CSGSHOE PumD Data· last 24 hrs Slow~lumo Da a00(") MD iVD{mBRD # TYPE LNR SPM EFF Flow Spp SPM SPP DEPTH MW

13.3/8 " 853 853 (") (%) (gpm (psi) (psi) (mRD (ppg)

~ TVFE

1 Nat. 12-P· 6.50 70 97 700 3600 30 700 260~ 9.'LNGTH CSG WT GRD THREAD 2 Nat. 12-P· 6.50 70 97 40 800 260~ 9,1

(m) IDC) Ibslft 50 880 2605 9,'14.9 12.4 6S,0 LSO NVAM 30 620 260t 9,1Shoejt

40 750 2605 9.11 xjt 11.5 12.4 68.0 LBO NVAM

I F/Coilar jt 12.3 12.4 6S.0 laO NVAM SO 850 2605 9.162 xjts 713.4 12.4 68.0 LSO N.VAM1 x pup "A" 3.1 12.4 68.0 L80 N.VAM Personnel: on Site =92WHjt 5.5 '2.4 68.0 LSO N,VAM


I Drlg SuperviSor Knobl Premier 5N. Drlg Supervisor Harrison Northern 70

Dowell Sehlum Cement 2Geologist Frankiewicz Asiatic ROV :>

I Geologist Clola Dowell Schlum Mud 1Nortnem Explorer P Cox & Milroy GeoServices 4

Anadrill 2Schlum Testing 3

I Corpro 2

II

Copyright IDS Ply Ltd, RbtofB report Mar 16th 1998.' Page NumbE r : 3

I

I 05/05/ Hl98 09:03 0352722058 PREMIER OIL GEELONG PAG 05/05



Survey MD ND INCl AZ. CORR. 'v DOGL.EG NfS ENV TOOL TYPE

I Last Tool Type: AIdrift (mRD (mRD DEG (deg) /!Z SECT (mf30m) (m) (m)(deg) (m)

Magnetic Declination: 12.60 1.829 0.50 AJdriftSurvey method: Min Curvature 1,994 0.00 Aid rift

I2,202 0.00 Aidrift2,348 0.00 Aidrift2,489 0.00 Aldrin:2,575 1,00 Aldrift2,660 2,00 Aldrift

I 2,661 2.00 Aidriff.

IIeIIIIIttIIIIII

Copyright IDS Ply Ltd, RbtofB report Mar 16th 1998.1 Page Number 4

I

Please find attached the Daily Drilling report for 3rd May 1998.


PAG 01/04

&t

D Please Recycle


From: Gordon Hunter

cc:

Date: May 4, 1998

Pages:

o Please Reply

PREMIER OIL GEELONG

o Please Comment

0352722058

D For Review




-Comments:

Gordon Hunter

Re:

Fax:

o Urgent

Phone:

To:

Premier Oil AustralasiaGeelong Operations BasePhcne:0352722101Fax: 0352722058

Regards

C·&~

Fax

I 04/0:!J/1998 08: 18

IIIIIIIeIIIII,-IIIIIII




REMARK 1 OBSERVATION SOLUTION 1 RECOMMENDATION

157.358$7813,820

$10 108.205

P&A

PAG 02/04

DAILY COST S :CUM COSTS ;AFE COST S :AFE BASIS:

12.2513.38

853

0.00

Formation Tops - This report pnlyI FORMATION ITOP meRI)

DAILY DRILLING REPORT ~~ 30

Y:>lIa-2

PREMIER OIL GEELONG

2.580.0 CUR. HOLE SIZE ("):

107.0 CSG OD ("):24.13 SHOE TVO (m Rl);

LEAK-OFF EMW(ppg)

CURRENT OP @ 0600: RIH with new bit

F>LANNED OP. : Orill ahead to coring point. Core.

T.D. (m Rl):PROGRESS (m):

DAYS FROM SPUD;

DAYS +/- CURVE:

0352722058

7.00 2,519 Drilled 121/4" hole 2473 - 2519m w/7-15klbs WOB 180rpm, 650 - 700gpll ,1800 - 21 OOpsi. Erratic torque 3 -12k ft-lbs. Gas peak of 13.75% at 2492m.Losses of 14bbls/hr of which 3/hr to mud cleaners. 7-8 at shakers and the r st tothe hole.

1.00 2,519 Top drive servicel connection. Boost riser through Choke and Kill lines to erE arcuttings that may have accumulated.

5.00 2,560 Drilled 12 1/4" hole 2519· 2560m whilst varying parameters from 5-30klbsWOB 100 -180rpm. 650. 750gpm, 1970 - 2540psi, to imrove ROP which sl ~weddown frequently to 2m/hr and less. Flow check at 2545m

3.50 2,571 Drilled 12 1/4" hole 2560 - 2571m wi 5·30klbs WOB. 100 -180rpm, andreduced f10wrate to 650gpm - 21 OOpsi to reduce losses. Average ROP 3.6m/hr

1,00 2,571 Drilling ahead but no ROP - suspected bit balling. Prepare caustic pill, whileworking bit to restart ROP with higher flowrate at 750gpm.

.50 2,577 Drill 12 1/4" hole from 2571-2577m. Bit cleared up after1 hour with increasefJowrate of 750gpm, 2540psi ( caustic pill not pumped) Drilling ahead at 12nillhr,5·30klbs WOB. 180RPM.

1.00 2,580 Made connection - drilled ahead from 2577m to 2580m. ROP dropped agair .Pumped 40bbl caustic pill.

1.25 2.580 Slowly pump caustic pill through bit, allowing bit to soak. Attempt to continuedrilling ahead. Increase flowrate to 820gpm after caustic pill above bit.

.25 2,580 Unable to make any progress. Circulate bottoms up from time of last metredrilled. Attempt to take Anderdrift survey - not working. FloW check well.

3,50 2,580 Pull 5 stands wet prior to pumping weighted 30bbl slug. POOH to 650m. 0-5 Ibsoverpull.


AustraliaBass Basin


Dowell 1------------'"----------.1.-------+---112.581.S94.0

0:00 07:00

07:00 08:00

08:00 13:00

13:00 16:30

16:30 17:30

17:30 18:00

18:00 19:00

19:00 20:15

20:15 20:30

20:30 24:00

FROM TOACTIVITY FOR PERIOD 00:00 HRS TO 24:00 HRS ON 03.05.98


Drill 12 1/4" hole from 2473m - 2580m. Varying parameters in attempt toincrease ROP. POOH for bit trip.

Very low and steady torque of 3-4k ft-Ibs with up to30klbs WOB seems to indicate bit balling, Possibly notenough bit cutting structure cleaning, with large nOZZlesizes (2 x 18. 6 x 14) selected, compromising hyraulicconsiderations in favor of enabling to pump various LCMpills without plugging the bit - shOUld hole conditionl mudlosses require this action.Mud losses increase at times of higher flow rates, toattempt to clean bit, to +1- 20bph,

00:00 02:15 2,25 2,580 POOH to sUrface - rack pipe in derrick02:15 03:30 1.25 2,580 Breakout out BD447 PDC bit and MfU new REED tricone bit EHP41HLK bit ~-1-7

dressed with 3x 14's. Breakout Anderdrift tool and M/U new Anderdrift to BHiA.Gauge stabs - NB stab 1f15" UG, string stabs OK

03:30 06:00 2.50 2,580 RIH to 785m with new bit.


MUD CO:

RT ABOVE MSL (m) ;WATER DEPTH @MSL (m) :

RT TO SEABEO (m) :

Copyright IDS Pry Ltd. RbtofB report Mar 16th 1998.1 Page Number: 1


04/05/1998 08:18I·IIIIIIIIIIIIIIIIIIII

I, 04/05/1998 08:18 0352722058 PREMIER OIL GEELONG PAG 03/04

I Premier Oil DAILY DRILLING REPORT Jf 30

I Report Date: 03.05.98 VI)lIa-2

REMARK! OBSERVATION SOLUTION! RECOMMENDATION

I C02::: 0.54% observed prior to gas peaks @ 2481m and2527mFuel figures are to be investigated - following discrepency Corrections will be made in next report

Iof 20MT between what has been dipped on the NEill andwhat has been delivered by Mermaid Raider,

Mud Properties MUD COST FOR TODAY; $5,644 CUMULATIVE MUD COST TO DATE: 5155,878

I Type: VISCOSITY( sec I Qt ): 54 API FLUID LOSS CI- (ppm): 42,000 SOLIOS (%voJ) : 4,3PV (cps): 18 (cm3130min) 5 K+ (ppm): 28000 H20 (%vol): 93.0Active S AF'I FILTER CAKE

FROM: FL VP (lb/100sq.ft): 37 (32nds inch 1 HARO/Ca (ppm) : 0 OIL (%vol): 0

TIME: 21:00 GEL 10s/10ml30m HTHP FLUID L.OSS MBT (ppb eq) : 0,0 SAND: 0.4

I WEIGHT (ppg): 1.10 (lb/100sqft) : 8 11 0 (cm3/S0min) 0 PM: 0.0 PH: 9.2

TEMP (C): 52 FANN 3/61100 8 10 34 HTHP FILTER CAKE I='F: ,2 PHPA; 0.0(32nds inch) 0

I •.it Data for Bit # 5 IADC. M 4 3 3 Wear I:: 01 :~~~Eg~~

SIZE ("): 12.25 NOZZLES Orilled over the last 24 hI'S Calculated over the it runMANUFACTURER: HU AVE WOB (k-Ibs): 10 2 X18

IMETERAGE (m) : 107 CUM.METERAGE (m) 274

TYPE: 80447 AVE RPM: 164 6X14 ON BOTTOM HRS : 16.5 CUM. ON SOT, HRS : 37.3SERIAL#: 1902101 FLOW (9pm): 666 X IADC DRILL. HRS: 19,0 CUM.lADC DRILL HR< : 43.8DEPTH IN (m RD : 2306 PUMP PRESS. (psi): 2.125 X TOTAL REVS : 162,360 CUM.TOT. REVS; ~67,O32

I DEPTH OUT (m RT) ; 2580 HSI (hp/sqi) : 0 X ROP (m/hr): 5.6 Rap (m/hr): 6.3

BHA#7 Length (tt) :198.4 D.C. (1) ANN. VELOCITY (mpm): 185

I HR.S ON JARS: STRING WT(k-lbs) ; 272 TRQE MAX (ft-Ibs): 14,881 D,C, (2) ANN VELOCITY (mpm): 185WT BLW JAR(k·lbs): 40 PICK UP \NT(k-lbs) ; 268 TRQE ON (fl-Ibs): 6,564 H.W.D.P. ANN VELOCITY (mpm): 127BHA WT(k-lbs) : 59 SLK OFF WT(k·lbs) : 278 TROe OFF (ft-Ibs): 4,000 D.P. ANN VELOCITY (mpm) : 127

IBHA DESCRIPTION: TOOL OESCRIPTION HRS SERfAL# COMMENT121/4" PDC bit -12/14"NB Stab cJw float· BDM7 PDC bit 43.8 19021018"Anderdrift - 6"Pony NMOC • 12 1/4" Stab - Totco

8" Hydra jar 282.1 2872 Used in 17 112" sectionring - S"NMDC - 12 1/4"Stab • 6x8"DC - Jar-3x8"DC - xJo - 1 x HWDP· dart sub· S X HWDP. 8" Anderdrlft 289.4 ADT811 Used in all sections

IAnchor Tension A1 : 40.0 A2: 45.0 A3; 80,0 A4: AS: 70.0

I(kips) A6: 70.0 A7: 70.0 A8: 65.0 A9: A10:

Workboats Location. Fuel Barile Olwtr P/Wtr Cmt Benl Hell Weather & Rig data @ 24:00 hI'S(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VDL (kips: 524.0

IM. Raider at rig 136 566 151 WIND SF'. (kts): 10.0 VISIB.(nm) : 10 RIS.TENS: 11Edward J. Fairnie at rig WIND DIR. (deg): 70 CEILING (m) : 2,500 HEAVE (m) 0.5

PRES.(mbars); 1029 WAVES (m); 1.0 ROLL (deg): 0.5AIR TEMP (C): 15.0 SWELL (m); 2.2 PITCH (deg 1.0

IICOMMENTS: All anchors piggied. Tension meter on #4 winch broken. No helicopters, Raider & Edward J Farnie on location.

Bulk Stocks Used lin Stock Used lin Stock Used /In Stock Used I In 5to k

IDRILL WA.TER (bbl) :371 2,165 FUEL (bbl): 58 1.555 GEL (sx) : 0 475 HEll-FUEL (kltr) : 0.0 132

POT WATER (bbl) : 32 1,448 BARITE (sx) : 0 6,482 CEMENT (sx) : 0 5,842

Drills, Permits & Inspections


TRIP DRILL 1/5/98 BOP TEST 2214/98 LTJ 25/4/98FIRE 3/5/98 NeXT TEST DUE DATE MTI 1714/98I='ITDRILL 1/5/98 RIG INSPECTION 1714/98 JSA ongoing

I INCIDENT DAYS SINCE LTA 7 #PTW ongoingSafety Me8tlng 3/5198

ICopyright IDS Pty Ltd. RbtofS repo~ Mar 16th 1998.1 Page Number: 2

I

MD iVD INCL AZ CORR. 'V DOGLEG NfS EfIN TOO TYPE(m RT) (m RD DEG (deg) f.Z SECT (m/30m) (m) (m)

(deg) (m)

1,475 0.00 Aldri1,631 0.00 Ndri11.710 0.00 Ndri1,829 0.50 Aldri1.994 0.00 Aldri~2.202 0,00 Afdrifl2.348 0,00 Afdri~2.489 0.00 Ndrifl

~=:::::::::=~==~=~;:::::~::::=:;:::=~---,IH1 Nat. 12·1'· 6.50 75 97 750TYPE LNGTH CSG \NT GRD THREAD 2 Nat 12.1'· 6.50 75 97

( m ) 10 C') Ibsfft

570

2314

232

#

04/04PAG

Page Number: 3

Slow UITID D ta

COMPANY NAME

SPM SPP OEPn MW(psi) (m RT) (ppg)

PremierNorthernDowell Schlum CementAsiaticROVDowell Sehlum MudGeoServicesAnadrillSchlum TestingCorpro

1800

spp(psi)

DAILY DRILLING REPORT j 30

Y:>lIa-2

P Jmo Data • last 24 hI'!>

PREMIER OIL GEELONG

'# TYPE LNR SPM EFF Flown (%) (gpm


Geologist FrankiewiczGeologist ClotaNorthern Explorer P Cox & Milroy

Pump Data

30 300 252 9.240 400 252 9.250 500 252 9.2

N,VAM 30 300 252 9.2N.VAM 40 400 252 9.2

N,VAM 1I~~~;;;~==:;=;:;;~=~=;;;;=~;:5;:0;;;=5;;0=0;;;~2;5~2~:;:;9;;.2;jN,VAMlliN.YAM Personnel: on Site =92N.VAM

JOB TITLE NAME

L80LBOLBOL80LBOLBO

853 853

68.068.068.068.068.068.0

12.412,412.412.412.412.4

0352722058

14.911.512.3

713.43.15.5

LOT PHASE CSG SHOE CSG SHOEMO TVD (mBRl)

13.3/8 "

Shoe jt1 x jtFfCollar jt62 xjls1 xpup "A"WHjt

CasingCSG00(")

Survey

Last Tool Type: AIdriftMagnetic Declination: 12.60Survey method: Min Curvature

Copyright IDS pty Ltd. Rbtof8 report Mar 16lh 1996.1

~ 04/05/1998 08:18


IIIIIeIIIII.-IIIIIII

_._--

I . . ~1. ---- "'

Premier Oil..,. .

I,

'-\~~~\.l1~~AILY DRILLING REPORT ~f 29

Report Date; 02.05.98 Yplla-2

I Well DataT.D. (m RD:~';

f.../ VCOUNTRY Australia 2,473.0 CUR. HOLE SIZE ("): 12.25 DAILY COST $ : 161,588FIELD Bass Basin PROGRESS (m): 145.0 CSGOD ("): 13.38 CUM COST $ : $7.656,461

IDRILL CO. : Northern Offshore DAYS FROM SPUD: 23.1~ SHOE TVD (m RD: 853 A~e COSTS: $10.108,205RIG: Northern Explorer III DAYS +/- CURVE: LEAK·OfF EMW(ppg) 0.00 AFE BASIS: P&AMUD CO: DowellRT ABOVE MSL (m) : 12.5 CURRENT OP @ 0600: Drilling ahead 121/4" hole al251 1m

I WATER DEPTH @MSL (m) ; 81.5 PLANNED OP: Drill ahead to coring point. Core.

RT TO SEABED (m) : 94.0

ISummary of period 00:00 to 24:00 hrs: Formation Tops - This report pnlyDril/12 1/4" hole from 2328m to 2473m. Offload Mermaid Raider. II FORMATION ITOp mBRT)

IACTIVITY FOR PERIOD 00:00 HRS TO 24:00 HRS ON 02.05.98FROM TO HRS DEPTH ACTIVIll' DESCRIPTION

00:00 06:00 6.00 2,364 Drilled 12 1/4" hole 2328 - 2364m w/2-12klbs WOB 170-190rpm, 7QOgpm,

I2180psi. Erratic torque 0 -15k ft-Ibs. Cont losses 20bbls/hr

06:00 17:30 11.50 2,432 Drilled 12 1/4" hole 2364 - 2432m wi 5-15klbs WOS 170-180rpm, 650gpm,1750psi. Erratic torque 0 ·15k ft-Ibs. 20bblslhr losses of which 8·15bblslh r I"be attributed to the hole and the remainder to the surface system.

I 17:30 18:30 1.00 2,432 Saver sub broke loose during connection. Pulled 2 stands off bottom andcirculate low rate while re-torque saver sub to maximum. Flush choke and illlines.

18:30 24:00 5.50 2,473 Drilled 12 1/4" hole 2432· 2473m wI 7-15klbs WOB 180rpm, 650gpm, 180 psi.

I Erratic torque 3 -12k ft-lbs.


IFROM TO HRS DEPTH ACTIVIll' DESCRIPTION

00:00 06:00 6.00 2,511 Drilled 12 1/4" hole 2473 -2511m w/7-15klbs WOB 180rpm, 650 -700gpn.1800 - 1950psi. Erratic torque 3 -12k ft-Ibs. Gas peak of 13.75% at 2492m.

ILosses of 14bbls/hr of which 3/hr to mud cleaners. 7-8 at shakers and the r ~sttothe hole.


I REMARK I OBSERVATION SOLUTION / RECOMMENDATION

Bulk fuel and water figures not updated as bunkering of Usage and delivery will be carried over to next rep rtfuel and water still taking place at time of report.

IMermaid Raider manifest shows 500m3 of 'useable fuel' Raider Captain should advise Premier Geelong of hishowever only 350m3 is for the NElli, with the remainder fuel requirements. This in addition to NEill requirernentsrequired for the Raider. should be loaded out where possible.Schlumberger welders - sid nearly all day due to PTW PTW system being reviewed. Reasons for lack of

I being cancelled while loading of fuel at 11 :00, however communication between drilling and marine drews beingloading did not actually commence until 19:00. Also poor investigated. Schlumberger Perth office need to besupport from Perth office regarding materials for job. motivated to assist field personnel.

I Mud Properties MUD COST FOR TODAY: $9,935 CUMULATIVE MUD COST TO DATE: $150.234

Type: VISCOSITY( sec / qt ): 52 API FLUID LOSS CI· (ppm): 40,000 SOLIDS (%vol) : 4.9PV (cps); 15 (em3/30mln) 5 K+ (ppm): 25700 H20 (%vol): 93.5Active Syp (lb/1 OOsq.ft): 30

API FILTER CAKE HARD/Ca (ppm) : 0 OIL (%vol): 0

I FROM; ~L(32nds ineh 1

TIME: 23:00 GEL 10s/10m130m HTHP FLUID LOSS MBT (ppb eq) ; 0,0 SAND: O.S

WEIGHT (ppg): 1.10(lb/100sqft) : 6 9 0 (em3/30mln) 0 PM: 0.0 PH: 9.0

TEMP (C): 50 FANN 3/6/100 6 8 28 HTHP FILTER CAKE PF: .2 PHPA: 0.0(32nds inch) 0

III Copyright IDS Ply Ltd, RbtofB report Mar 16th 1998.1 Page Numbe ; 1

I H3 39\;;:'d 9NOl339 l IO Cl3HBCld BS0GGLGSE0 0t>:01 866 /S0/E0

-----

I .

I Premier Oil DAILY DRILLING REPORT ~ 29

Report Date: 02.05.98 Y01la-2

I Bit Data for Bit # 5 IADe# M 4 3 :3 Wear I II 011~L L II 8 '~I02 R III I II II II II I

SIZE ("): 12.25 NOZZLES

I MANUFACTURER: HU AVE WOS (k·lbs) : 10Drilled over tne last 24 hrs Calculated over the bil run

2 X18 METERAGE (m) : 145 CUM,METERAGE (m 167TYPE: BD447 AVE RPM: 159 6 x14ON BOTTOM HRS : 19,5 CUM. ON BOT. HRS 20,8

SERIAL# : 1902101 FLOW (gpm): 662 X IADC DRILL. HRS : 22.5 CUM.IADC DRILL HI'S: 24,8

IDEPTH IN (m RT) ; 2306 PUMP PRESS. (psi): 1,971 X TOTAL REVS: 185,839 CUMTOT. REVS: 198,432DEPTH OUT (m RT) : HSI (hp/sqi) : 0 X Rap (m/hr): 6,4 Rap (m/hr); 6.7

IBHA#7 Length (tt) :198.4 D,C (1) ANN. VELOCITY (mpm): 200HRS ON JARS; STRING WT(k-lbs) ; 268 TRQE MAX (ft·lbs): 15,407 D.C. (2) ANN VELOCITY (mpm) 200VVT BLW JAR(k·lbs): 40 PICK UP WT(k-lbs) : 265 TRQE ON (ft-Ibs): 6,025 HW.D.P. ANN VELOCITY (mpm : 137BHA WT(k-Jbs) : 59 SLK OFF WT(k·lbs) : 275 TRQE OFF (ft-Ibs): 3,500 D.P. ANN VELOCITY (mpm) : 137

I BHA DESCRIPTION. TOOL OESCRIPTION HRS SERIAL # COMMENT121/4" PDC bit -12/14"NB Stab ctw float-

8D447 PDC bit 22.5 19021018"Anderdrift - 8"Pony NMDC - 12 1/4" Stab - Totco8" Hydra jar 258.1 2872 Used In 17 1/2" sectionring - 8"NMDC - 12 1/4"Stab - 6x8"De - Jar-

I 3xS"DC - xlo - 1 x HWDP - dart sub - axHWDP. 8" Anderdrlft 265.4 ADT811 Used in all sections

Anchor Tension A1 : 40.0 A2: 50,0 A3: 85,0 A4: A5: 70,0

I (kips) A6: 70,0 A7: 70,0 AS; 65.0 A9: Al0:

Workboats Location. Fue) Barite Dlwtr Plwtr Cmt Bent Heli Weather & Rig data @ 24:00 hl1l

I(kltr) (5X) (bbl) (bbl) (5X) (SX) (kltr) VOL (kips: 430.0

M. Raider at rig WIND SP. (kts) : 4.0 VISIB.(nm) : 10 RIS,TENS: 11Edward J. Fairnie at rig WIND DIR (deg) :260 CEILING (m) ;2,500 HEAVE (m : 1.5

PRES,(mbars): 1032 WAVES(m) : 2.0 ROLL (de, ) : 0.5

IAIR TEMP (C): 14.0 SWE:LL (m) ; 1.1 PITCH (de ~) : 1.0

ICOMMENTS: All anchors piggied. Tension meter on #4 winch broken. No helicopters, Raider offloading fuel and water and equlpme ~t

started at 10:30.

I Bulk Stocks Used lin Stock Used lin Slocl< Used lin Stock Used lin SIpckDRILL WATER (bbl):O 1,404 FUEL (bbl) : 0 1,263 GEL (sx): 0 475 HEll-FUEL (kltr) : 0,0 1~.2

POT WATER (bbl) : 0 , ,479 BARITE (sx) : 0 6,482 CEMENT (5X) : 0 5,842

~.Drills, Permits & Inspection~

DRILL TYPE DATE: INSPE:CTIONS DATE SAFETY DETAILS

TRIP DRILL 1/5/98 BOP TEST 2214/98 LTI 25/4/98

I FIRE 26/4/98 NEXT TEST DUE DATE MTI 17/4198PIT DRILL 1/5/98 RIG INSPECTION 1714/98 JSA ongoingINCIDENT DAYS SINCE LTA 6 'PTVV ongoing

Safety Meetin9 2/5/98

I Casinq Pump DataeSG LOT PHASE CSGSHOE CSG SHOE P maCafa - lal~t 24 ., rs Slow PumD 01 ta00(") MD TVO (mBRT) # TYPE LNR SPM EFF Flow spp SPM SPP DEPT!- MW

I 13.3/8 ., 853 S53 (") ("!o) (gpm (psi) (psi) (m RT) (ppg)

6.50 65 97 650 1800 30 300 240 9.21 Nat. 12-P·TYpE LNGTH CSG WT GRD THREAD 2 Nat. 12-P· 6.50 65 97 40 390 240 9.2

(m) ID (") Ibsftt 50 475 240 9.2

I Shoe jt 14.9 12.4 68.0 LBO N'vAM 30 290 240 9.2

1xjt 11.5 12.4 68.0 LSD N,VAM 40 390 240 9.2

F/Coliar Jt 12.3 12.4 68.0 LBO N,VAM 50 450 240 9,2

62xjts 713,4 12.4 68,0 LSD N,VAM

I 1 x pup "AU 3,1 12.4 68,0 LSD N,VAMWHjt 5.5 12.4 68,0 L80 N.vAM

II Copyright IDS Pty Ltd. RblofB report Mar 16th 1998,1

Page NumT, 2

I G0 39t:'d 9NDl339 lID ~3IW3~d 8S0GGLGSE0 0p:01 855j/S0/E0

Survey MD TVO INCL AZ CORR. 'V DOGLEG N/S ENJ TO PL TYPE

Last Tool Type: AIdrift(m RT) (m RT) DEG (deg) AZ. SECT (mI30m) (m) (m)

(deg) (m)Magnetic Declination: 12.60 1,475 0.00 AJd if!Survey method: Min Curvature 1,6.31 0,00 AJd 1ft

1.710 0,00 AJd 1ft1,829 0.50 AId itt1,994 0.00 AJd 1ft2,202 0.00 AJd if!2,348 0.00 AJd ·ft2,489 0,00 AJd ft

CAlLY DRILLING REPORT" 29

'Y olla-2

Geologist FrankiewiczGeologist ClotaNorthern explorer P Cox & Milroy

855 /S0/E0

570

2314

2:32

#

Page Numb r: 3

COMPANY NAME

PremierNorthernDowell Schlum CementAsiatic ROVDowell Schlum MudGeoServleesAnadrlJlSchlum TestingCorpro

8S0GGLGSE0

NAME

KnoblHarrison

JOB TITLE

Drlg SupervisorN. Drlg SupeIVisor


8NDl338 lID ~3IW3~d

02.05.98

E0

CopyrighllDS Ply Ltd, RbtofB report Mar 16th 1998.1

Report Date:

Premier OilI·IIIIIIIIIIIIt'IIIIIII

Please find attached the Daily Drilling summary report for 1st May 1998.



PAG ElllEl2

~

o Please Rec:ycle


From: Gordon Hunter

cc:

Pages:

Date: May 2, 1998

o Please Reply

PREMIER OIL GEELONG

o Please Comment

El352722El58

o For Review

Santos Ltd.. Attn: Neil Tupper



Cue Resources, Attn: Andrew Adams

Boral Energy Resources I Attn: A. Guthrie, Ross Naumann

Re:

•Comments:

o Urgent

Phone:

Fax:

To:


Regards

C·VL.~Gordon Hunter

.-.

I El2/El5/1998 12: El7

III

'FaxIIIeIIIIIttIIIIIII


~re~ier'Oiltanagernent Report • Issue date 02.05.98•

..-

IIWEll: Yolla-2 REP. NUMBER: 28 REP. DATE; 01.05.98

IrDRILLING CO.: Northern Offshore RIG: Northern Explorer III HOLE SIZE (") : 12.2

IDEPTH (m): 2,328.00 PROGRESS (m}40.00 DAYS FROM SPUD 22.1~ DAYS +/- CURVE:

.4 hr SUMMARY: Drill to 2306m. POOH for new PDC bo. RIH conditionl dilute mud. Drill to 2328m.

TATUS AT 0600: Drilling ahead 12 1/4" hole at 2364m

PLANNED OP: Drill ahead to coring point. Core.-I1e0ST DATA

DAllY: $344,465 CUM: $7,494,874 AFE: $10.108,205 DIFF. AFE-CUM :$2,613,331

IlaProoerties MUD COST FOR TODAY: $10.086 CUMULATIVE MUD COST TO DATE: $140.299

Type: VISCOSI1Y( sec I ~l ): 55 API FLUIO LOSS CI- (ppm) : 42.000 SOLIDS (%vol) : .7

IPV (cps): 16 (cm3/30min) 5 K+ (ppm): 30800 H20 (%vol): 9 .5Active S API FILTER CAKEYF' (lb/'OOSCl.ft): 33 (32nds inch 1 HARD/Ca (ppm) : 0 OIL(%lIol): 0

FROM: FLTIME: 23:00 GEL 10s/10m130m MTHP FLUID LOSS MBT (ppb e~) : 0.0 SAND: .3

WEIGHT (ppg): 1.11 (lb/1 OOsqft) : 7 11 0 (cm3/30min) 0 PM: .3 PH: .0

I TEMP (C): 49 FANN 316/100 7 9 30 HTHP FILTER CAKE PF: .3 PHPA: .0(32nds inch) 0

Bit Data for Bit # 4 IADCt#- 4 4 7 Wear 83' 01 -'I D 'EEEE~Em~BI3 II 3 II WT I A e 3/16 NO ~

SIZE("j: 12.25 NOZZLES Drilled oller the last 24 hrs Calculated oller the bit runMANUFACTURER: HU AVE woe (k-lbsl : 30 3 X14

a21METERAGE (m) : 18 CUM.METERAGE (m)TYPE: ATMGT-18 AVE RPM : '49 x ON BOTTOM HRS : 3.0 CUM. ON BOT. HRS : 3.9I SERIAL': W15CB FLOW (g;!m) : 584 X IADC DRILL. HRS : ~.3 CUM.IADC DRILL HRS: 6.5DEPTH IN (m Rn ; 1485 PUMP PRESS. (psi): 3.588 x TOTAL REVS: 26,641 CUM.TOT. REVS: 660,398DEPTH OUT (m RT) : 2306 HSI (hp/sqi) : 0 x ROP (m/nr): 5.5 ROP (m/hr): 9.5

I Bit Data for Bit # 5 lADC# M 4 3 :3 Wear ~~~E9E9~~~E("): 12.25 NOZZLES Drilled oller the last 24 hrs Calculaled oller the bit runNUFACTURER : HU AVE WOB (k·lbs): 7 2 X18 METERAGE (m) : 22 CUM.METERAGE (m) 22TYPE; 60447 AvE RPM: 156 6 X14 ON 80TTOM HRS : 1.3 CUM. ON 60T. HRS : 1.3

SERIAL# : 190210' FLOW (gpm): 671 X IADC DRILL. HRS : 2.3 CUM,IADC DRILL HRS: Z.~

DEPTH IN (m Rn : 2306 PUMP PRESS. (psi): 2.037 X TOTAL REVS: 12.355 CUM.TOT. REVS: '2 ~55

IDEPTH OUT (m Rn ; HSI (hp/sqi) ; 0 X ROP (m/hr): 9.8 ROP (m/hr): S.8

BHA#6 Length (ft) :198.4 D.C. (1) ANN. VELocrN (mpm): 199

I HRS ON JARS : STRING WT(k.lbs) : 257 TRQE MAX (fl-lbs): '2.702 D.C. (2) ANN VELOCITY (mpm): 199WT BLW JAR(k·lbs): 40 PICK UP WT(k.lbs) : 248 TRQE ON (fl-lbs): 4.992 H.W.D.P. ANN VELOCITY (mpm): 137BHA WT(k·lbs) : 59 SLK OFF Wf(k·lbs) : 252 TReE O~F (ft-Ibs): 4.000 D.~. ANN VELOCITY (mpm) ; 137

I

8HA DESCRIPTION: TOOL DESCRIPTION HRS SERJAL# COMMENT12 114" Tricone bit -121'4"NB Stab c/w float -

'2"4" ATM GT-18 bit 86.5 W15C68"Anderdrift - S"Pony NMDC - 12 "4" Slab· Totcoring. a"NMDC - 12 "4"Slab - 6x8"DC - Jar· 8" Hydra Jar 216.6 2872 Weir Houston-Used in 17 '/2"

section.

I

3x8"DC - xJo - 1 x HWDP - dert sub - 8 X HWDP.Anderdritt Survey 1001 222.9 ADT811 Used in 36" & 17 1/2" section

IBHA#7 Length (tt) :198.4 D,C, (1) ANN. VELOCITY (mpm): 200HRS ON JARS: STRING WT(k-lbs) : 259 ITRQE MAX (fl-Ibs): 14.810'1 D.C. (2) ANN VELOCITY (mpm): 200

'-NT 6LW JAR(k·lbs): 40 PICK UP WT(k-lbs) : 249 TRQE ON (ft-lbs): 5,512 H.W.D.P. ANN VELOCITY (mpm): '37BHA WT(k-lbs) : 59 SLK OFF WT(k·lbs) : 254 TRQE OFF (ft-Ibs): 3.000 D.P. ANN VELOCITY (mpm): 137

I BHA DESCRIPTION: TOOL DESCRIPTION MRS SERIAL# COMMENT12 "4' PDC bit ·'21'4"NB Stab eJw float·

80447 PDC bit 2.3 1902'0'S"Anderdrift - S"Pony NMDC· '2 1/4" Stab - Tott::o S" Hydra jar 234.1 2872 Used in 17 1/2" sectionring - 8"NMDC - , 2 1/4"Stab • 6xS"DC - Jar·

I3xS"DC • xJc -1 x HWDP - dart sub· 8 X HWDP. a" Anderdrift 24'.4 ADT811 Used in all sections

Please find attached the Daily Drilling report and Geological report for 30~ April 1998.


01/04

~~-

PAG

D Please Recycle


cc:

Date: May 1, 1998

Pages:

From: Gordon Hunter

o Please Reply

PREMIER OIL GEELONG

o Please Comment

0352722058

o For Revisw




•Comments:

Gordon Hunter

D Urgent

Re:

Phone:

~ax:

To:

Premier Oil AustralasiaGeelong Operations BasePhone: 035272210'Fax: 0352722058

Regards

CI\Q~

I 01/05/1998 09: 58

III

I FaxII

I.IIIIII_IIIIIII

I 01/05/1998 09: 58 0352722058 PREMIER OIL GEELONG PAGt 02/04

IPremier Oil

I Report Date: 30.04.98


Yolla-2

$18 ,593$7,15 .409

S10,10~,205

P&A

DAILY COST $ :CUMCOST$;AFE COSTS:

AFE BASIS:

12.2513.36

8530.00

CUR. HOLE SIZE ("):CSG 00("):SHOE TVD (m RD:LEAK-OFF EMW(ppg)

2.288.0113.021.13

CURRENT OP @ 0600: Pulling out of hole for new bit.PLANNED OP.: POOH for bit trip. Dri1l12 1/4" hole.

T.D. (mRD:PROGRESS (m);

DAYS FROM SPUD;

DAYS +1- CURVE:

AustraliaBass Basin


Dowell I---------.......J..---------.L--------+--I12.581.594.0

I Well DataCOUNTRYFIELDOR1L~ CO.;

I RIG:

MUD CO:

RT ABOVe. MSL (m) :WATER DEPTH @MSL (m) :I RT TO SEABED em) ;

Summary of period 00:00 to 24:00 hrs: Formation Tops - This report OJ Iy

Drilled 121/4" hole. Wiper trip 11 stands OK. Observe weather. RIH - drill :1 FORMATION ITOP(mBRT)

I 12 1/4" hole1.--- _


Page Num 'er: 1

.50

.25

.25

1.251.00

8.50

3,00

1.00

1.00

1.00

3.00

03:15 04:3004:30 05:30

05:30 06:00

FROM TO HRS DePTH ACTIVITY DESCRIPTION

00:00 03:15 3.25 2,306 Drilled 2288-2306m, w/ +/- 25-45klbs WOB, 150rpm, 693gpm, 3550psi, To que4-7k ft-Ibs torque. Inst Rap 3 -20m/hr. Cont'd losses 20-33 bph.

2,306 Circulate bottoms up with 700gpm, 3550psi, 87rpm and 3-4k ft-Ibs torque.2,306 Pumps off - flow check - ok. Pulled 5 stands wet, negligible drag - pumped 20bbl

slug.2,306 POOH for new bit.

15:15 15:30

09:00 10:00

06:00 09:00

15:00 15:15

11:00 12:00

15:30 24:00

10:0011:00

12:00 15:00



Copyright IDS Ply Ltd, RbtofB report Mar 16th 1998,1

I.lfROM TO HRS DEPTH ACTIVITY DESCRIPTION

.0:00 06:00 6.00 2,217 Drilled 2175-2217m, w/10-42klbs WOB, 150rpm, 680gpm, 3550psi, 3-10k ft Ibstorque (occasional formation-related stalling). Downhole losses cont at variat Ie& erratic @ < 30bph.

2,232 Drilled 2217-2232m, w/10-42klbs WOB, 1S0rpm, 680gpm, 3550psi, Torqueerratic, fluctuating 3-1 Ok ft-Ibs torque. Downhole losses cont at+/- 30bph.

2.232 Weather deteriorating. Wind 52kts gusting to 58kts at 285deg. Wave height .54.5m dir 285deg, #3 anchor tension 120kips surging to 200kips with incr, SWI lis,Riser angle up to 3.5deg. Start thrusters. Pump slug and POOH 11 stands.

2,232 Hole in good condition. Observe static losses Wind dir coming round to fwd. l't3anchor tension down to 140kips • others at 50-80kips. Max seas 4.5m, heav atslip jt 2m, roll 2.5deg, pitch 2deg. Service rig /topdrive. Static losses 4bbl/hr.

2,232 RIH to within 1stand off bottom and assess weather. Wind increased during ripin hole to SOkts. #3 anchor tension increasing again towards 170kips.

2,232 Circ out slug and clean hole 1std off bottom at 550gpm Mud losses at this ra edown to 20bph. Cont'd to observe weather and prepare POOH if weather coj"ld.deteriorate.

2,232 Weather conditIon stabilising as per forecast - max sea height 5.5 -Sm. #3anchor tension 170 kips, #2 anchor tension at 150 kips. Barometric press u~

from 1010mb in the morning to 1018mb at 1500hrs.2,232 Precautionary wash last stand to bottom w/680gpm 3550psi 80rpm. Norma 5

1Oklbs drags observed: no trace fill (pumps on).2,288 Drilled 2232-2288m, W/ +/-30klbs WOB, 150rpm, 680gpm, 3550psi, Torque

erratic, fluctuating 3-1 Ok ft-Ibs torque. lnst ROP 8 -30m/hr. Thrusters stoppe d at18:00. main engine remaining dead slow on stbd unit. Cont'd losses 20-33 t ph.

IIIIIIIIIIIII


I · 0"1PremIer I

I Report Date: 30.04.98


Yolla-2

MUD COST FOR TODAY: $14,025

Well testing contractor to rerun pressure losscalculations to find out if 3" line is suitable for welltesting. If not. line will need to be replaced.

CUMULATIVE MUD COST TO DATE; $130.213

SOLUTiON I RECOMMENDATION

190 sx IDF-FLR at 1.83ppb =5710bbls620cans IDBOND at 2.2ppb =15500bbls580sx IDFLO at 3ppb =10633bbls230sx IDVIS at 1.1 ppb =11500bbls68MT KCI at 17.5ppb =8654bls180sx KOH at O.75ppb ~ 13200bbls40sx Soda Ash at 1.1ppb =2200bblsPresently not using any Soda Ash in new mud becaL sewe are using seawater for makeup

IREMARK I OBSERVATION

Amount of new mud that can be mixed at currentconcentrations with the amount of chemicals currentlyI available including order due on the Raider.

II

Continued losses to formation, varying from 20 - 33bph.No LCM added to system· awaiting more suitable LCMchemicals on "Raider"Gas flow line confirmed as 3" line - not 4" as previouslyI advised to Premier.I.Ud Properties

Bulk Stocks Used lIn Stock Used lin Slock Used lin Stock Used lin SlockORH.I.WATER(bbl}:251 1,404 FUEL(bbl): 18 1.278 GEL(sx}; 0 551 HELl-FUEL (kltr):O.O 14.0POT WATER (bbl): 257 1,479 BARITE (sx): 617 6,592 CEMENT (sx) : a 5.842

All anchors piggied. Tension meter on #4 winch broken. All Choppers cancelled due 10 weather. One standby boat at ri~.

Raider in Geelong.

194194133133

5.792.0

oo

9,1

0.0

Page Numb~r: 2

AS: 70.0

MO:

COMMENT

Calculated over the bi run

CUM.METERAGE (m) 803CUM. ON BOT. HRS : 70.9CUM.IADC DRILL HRS: 83.3CUMTOT. REVS: 603.983ROP (m/hr): 9.6

Weir Houston-Used in 17 1 2"section.Used in S6" & 17 1/2" secti n

D.C. (1) ANN. VELOCITY (mpm):D.C. (2) ANN VELOCITY (mpm):HW.O,P. ANN VELOCITY (mpm):D.P. ANN VELOCITY (mpm) :

A4:

A9:

15'712

16,1574.000

CI- (ppm) ; 36.000 SOLIDS ("!ovol):5 Ki' (ppm) : 26250 H20 (%vol) :

1 HARD/Ca (ppm) : 60 OIL (%vol) :MBT (ppb eq) : 7.5 SAND:

o PM: .3 PH:

o PF: .5 PHPA:

83.3 W15CB213.1 2872

HRS SERIAL #

.935.0 ADT811

Drilled over the last 24 hrs

METEAAGE (m): 113

ON B01l0M HRS : 16,6IADC DRILL. HRS : 17.0TOTAL REVS: 141,773ROP (m/hr); 6.6

..........l--lt---=-0....1-4ICY:JlnITJDDt 02 " R III 1c=:Jt=Jc.Jc=J1 II J

Weather & Rig data @ 24:00 hrsVDL (kips: 430.0

WIND SP. (kts); 20.0 VISIB.(nm): 8 RIS.TENS: 11WIND DIR (deg) :225 CEILING (m) : 2,000 HEAVE (m: 1.0~RES.(mt:lars): 1022 WAVES (m) : 2,5 ROLL (deg: 1.0AIR TEMP (C): 11.0 SWELL (m): 3.5 PITCH (de ): 1.0

A3: 90.0

AS: 70.0

Wear

NOZZLES

3 X14X

X

XX

20

142700

3.500

o

257 ITROe MAX (ft-Ibs):248 TROe ON (ft-Ib5):252 TRQE OFF (ft-Ibs):

A2: 55,0

A7: 75.0

TOOL DESCRIPTION

7

121/4" ATM GT-18 bit8" Hydra Jar

4

A1 : 45,0

A6: 70,0

AVE WOB (1<-lbs) ;AVE RPM ;

FLOW (gpm) ;

PUMP PRESS. (psi):

HSI (hp/sql) :

IADC# 4

VISCOSITY( sec I ql ): 56 API FLUID LOSSPV (cps): 18 (emS/30min)

yp (lb/100sq.ft): 40 f~ric1;Tn~~ CAKE

GEL 10s/1Om130m HTHP FLUID LOSS(lb/100sqft) : 8 12 0 (cm3130min)

FANN 3/6/100 8 11 36 HTHP FILTER CAKE(32nds inch)

FL23:00

1.13S1

12.25HU

ATMGT·18

W1SCB

1485

Location. ~uel Sarite Dlwtr Plwtr Cmt Bent Heli(kllr) (SlC) (bbl) (bbl) (sx) (sx) (kltr)

M, Raider GeelonEdward J. Fairnie at rig


Workboats

BHA # 6 Length (ft) :198.4HRS ON JARS: ISTRING WT(k-lbs) :'NT BLW JAR(k·lbs); 40 PICK UP \t\IT(k-lbs) :8HA \t\IT(k-Ibs) : 59 SLK OFF l/IJT(k-lbs) :

BHA DESCRIPTION:121/4" Tricone bit ·12/14"NB Slab cJw float8"Anderdrifl- S"Pony NMDC - 12 1/4" Stab - Tolcoring - S"NMDC - 12 1/4"Stab· 6xS"DC· Jar3x8"DC • xlo - 1 x HWDP - dart sub - 8 X HWDP.

Anderdrlft Survey tool

Bit Data for Bit # 4

SIZE (n):

MANUFACTURER:

TYPE:

SER1AL#:

DEPTH IN (m RT) :

DEPTH OUT (m RT) :

ICOMMI;NTS :

Copyright IDS PlY Ltd. RblofB report Mar 16th 1998.1

I Type:KCIFROM:TIME:WEIGHT (ppg):TEMP (C):I

IIIIIIIIIII

I 01/~5/1998 09: 58 0352722058 PREMIER OILGEELONGPAG~ 04/04

I 0 0 0 1PremIer II Report Date: 30.04.98


Yolla-2

I· Drills, Permits & Inspection~

DRILL TYPE DATE INSPECTIONS

TRIP DRILL BOP TESTFIRE 26/4/98 NEXT TEST DUE DATE

I PIT DRILL 30/4/98 RIG INSPECTIONINCIDENT DAYS SINCE LTA

DATE SAFETY DETAILS

22/4/98 LTI 2514/98MTI 17/4/98

17/4/98 JSA ongoing4 #PIW ongoing


Survey MD TVD INCL ;.z. CORR. 'V' DOGLEG N/S EfW TOOL TYPELast Tool Type: AJdrift (mRT) (m RT) DEQ (deg) AZ SECT (mI30m) (m) (m)

(deg) (m)

Magnetic Declination: 12.60 1,232 0.00 AId riftSurvey method: Min Curvature 1,389 1,00 Aldrin

1,475 0.00 Ndrift1.631 0,00 AId rift1,710 0.00 Ndrift1,S29 0.50 Aldrif1.994 0.00 Ndrif2.202 0,00 Aldrif

Page Numt~r : 3

Slow PumD Data

COMPANY NAME #

Prem~r 5Northern 72Cement 1Asiatic ROV 3Mud 1GeoServices 4Other 4

SPP SPM SPP DEPTH MW(psi) (psi) (m RT) ppg)

PumD Dati -last 2Ji hIS#- TYPE LNR SPM EFF Flow

('') (%) (gpm

Geologist FrankiewiczGeologist ClotaNorthern Explorer P Cox & Milroy

Pump Data

3550 30 450 2232 9.440 590 2232 9.450 725 2232 9,4

N.vAM 30 450 2232 9,4N.VAM 40 575 2232 9.4

N.VAM 11~:;;~==~;;~=~=;;;=~=~~50;;;=7~4=O~=2;:2~3;2*::;;9~.4~N.VAMIIN,VAM Personnel: on Site =90N,VAM

JOB TITLE NAME


LBOLSOLSOLSOLSOLeo

853 853

68.068.06S.06S.068.068.0

14.9 12.411.5 12.412.3 12.4

713.4 12.43.1 12.45.5 12.4

LOT PHASE CSG SHOE CSG SHOEMD TVD (maRT)

CSG00(")

13.3/6 ..

Casino


II

Shoejt

I hjt

:

t,conarjtxjts

1 x pup "A"II WHjt

IIIIIIIIIIII

Please find attached the Daily Drilling report for 29lh April 1998.

PAG

o Please Recycle


Date: April 3D, 1998

From: Gordon Hunter

cc:

Pages:

o Please Reply

PREMIER OIL GEELONG

o Please Comment

0352722058

D For Review


Mineral Resources Tasmania. Attn: Carol Bacon


Fa,.;:

Re:


To:

o Urgent

Phone:

-Comments:


Regards

Ct·J(·~Gordon Hunter

Fax

I 30/04/1998 09: 55

IIIIIIIeIIIII.IIIIIII


,

I Premier Oil DAllY DRILLING REPORT t# 26

I Report Date: 29.04.98 Yc~lIa-2

Mud Properties MUD COST FOR TODAY: $17,434 CUMULATIVE MUD COST TO DATE: $116,188

I Type: VISCOSITY( sec' qt ): 57 API FLUID LOSS5

cr· (ppm): 36,000 SOLIDS (%1101) : 4.5

KCI PV (cps): 20 (cm3/30min) K+ (ppm): 29250 H20 (%1101): 93.0API FILTER CAKE

FROM: FL Y~ (lb'100SCl.ft): 40 (32nds Inch 1 HARD/Ca (ppm) : 60 OIL (%'0101); 0

TIME: 23;00 GEL 1Os/1 Om/30m HTHP FLUID LOSS MBT (ppb eCl) : 7.5 SAND: 0

I WEIGHT (ppg): 9,41 (lb/100sqft) : 11 15 0 (cm3/JOmin) 0 PM: ,7 PH: 9.7

TI;MP (e): 55 FANN 316/100 10 14 40 HTHP FILTER CAKe PF: ,6 PHPA: 0.0(32nds inch) 0

I Bit Data for Bit # 4 IADC# 4 4 7 Wear Eg~~r:g~~~~size ("): 12.25 NOZZLES Drilled over the last 24 hrs Calculated over the it runMANUFACTURER: HU AVe WOB (k-Ibs): 25 3 X14

IMETERAGE (m) ; 181 CUM.Mr=TERAGE (m) 690

lYPE: ATMGT-1S AVE RPM : 145 X ON BOn-OM HRS : 12.2 CUM. ON BOT. HRS : 45.7SERIAL#: W15CB FLOW (gpm); 700 x IADC DRILL. HRS : 24,0 CUM.lADC DRILL HR ; 66,3DEPTH IN (m RT) ; 1485 PUMP PRESS, (psi); 3,500 X TOTAL ReVS: 106,227 CUM.TOT, REVS; ~97.242

I DE~TH OUT (m RT) : HSI (hplsqi) ; 7 X ROP (m/hr): 7.S ROP (m/hr); 10,4

BHA#6 Length (ft) :198.4 DC, (1) ANN, VELOCITY (mpm): 199

I HRSON JARS: STRING WT(k-lbs) ; 248 TRQE MAX (fi·lbs): 15,651 D.C. (2) ANN VELOCITY (mpm): 199\NT BLW JAR(k-lbs): 40 F'ICK UP WT(k-lbs) : 238 TRQE ON (fl·lbs): 5.869 H.W.D.P, ANN VELOCITY (mpm): 137

8HA WT(k·lbs) : 59 SLK OFF WT(k·lbs) : 245 TRQE OFF (ft-Ibs): 3,800 D,P. ANN VELOCITY (mpm) : 137

IaHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL#- COMMENT12 1/4" Tricone bit -12/14"NB Stab e/W float-

121/4" ATM GT-18 bit 66.3 W15Ce8"Anderdrift - a"Pony NMDC - 12 1/4" Stab - TOICO8" Hydra Jar 189.1 2872 Weir Houston-Used in 17 1 2"ring - 8"NMDC - 12 1/4"Stab - 6x8"DC - Jar-

section.3xS"DC - xJo - 1 x HWDP - dart sub - 8 X HWDP.Anderdrift Survey tool 195.4 ADT811 Used in 36" & 17 112" secti ~n

IAnchor Tension A1 : 40.0 A2: 45.0 A3: 110.0 A4: AS: 90.0

I (kips) A6: 75.0 A7: 65.0 AS; 70.0 A9: 60.0 A10 :

Workboats Localion. Fuel Barile DlWtr PMr Cmt Bant Heli Weather & Rig data @ 24:00 hrs

I(kltr) (sx) (bbl) (bb!) (sx) (sx) (kltr) VDL (kips: 430.0

M. Raider Geelon WIND SP. (kts) : 30.0 VISI8.(nm) : 8 RIS.TENS: 11Edward J. Fairnie at rig WIND DIR (deg) :320 CEILING (m) ; 2,000 HEAVE (m): 0.8

PRES,(mbars): 1012 WAVES(m) : 2.2 ROL~ (deg); 1.0AIR TEMP (C): 15.0 SWELL (m): 3,3 PITCH (deg); 1.0

I lCOMMENTS: All anchors piggied. Tension meIer on #4 winch broken. Rae. 1 chopper: 7 PAX onto rig. 1 off. One standby boats al rig Raidersailed for Geelong.

I Bulk Stocks Used lin Stock Used / In Stock Used lin Stock Used /In Stc clc:DRILL WATER (bbl) : 182 1.655 FUEL (bbl): 15 1,296 GEL (sx): 0 551 HEll-FUEL (kltr) : 0.4 1 .0

POT WATeR (bbl) : a 1,736 BARITE (sx) : 0 7.209 CEMENT (sx) : 0 5,842

I Drills, Permits & InspectionfDRILL TYPE DATE INSPECTIONS DATE SAFElY DETAILS

ITRIP DRILL BOP TEST 22/4198 LTI 25/4/98FIRE 26/4/98 NEXT TeST Due DATE MTI 17/4198PIT DRILL 30/4/98 RIG INSPECTION 17/4/98 JSA ongoingINCIDENT DAYS SINCE LTA 3 #PTW ongoing

Safely Meeting 26/4198

III

Copyright IDS Ply Ltd, RbtofB report Mar 16th 1998,' Page Numbe 2

I




Summary of period 00:00 to 24~OO hrs:

Drilled 12 1/4" hole, with periods of formation-related high torque andstring stalling. Increased downhole losses below 2133m.

03/04

$167,300$6.~61.816

$10.~08,20S

P&A

PAG


AFE BASIS:

12.2513.38

8530.00

Formation Tops. This report ~nly

I FORMATION ITOP mBR1)

DAILY DRILLING REPORT t# 26

Yolla-2

CUR, HOLE SIZE ("):CSG OD ("):

SHOE TVD (m R1);

LEAK·OFF EMW(PP9)

PREMIER OIL GEELONG

2,175.0

181.020.13

CURRENT OP@ 0600: Drilling 121/4" hole: depth @06;OOhrs - 2217m.PLANNED OP.: Drill 121/4"hole.


DAYS FROM SPUD;

DAYS +/- CURVE:

2,015 Drilled 1994-2015m, w/18-42klbs WOB, 150-160rpm, 700gpm , 3550psi. 36kft-lbs torque. ROPs 6·200m/hr (through sands); rpm(string stalling)/torque/R OPcont erratic through SST.

2,015 Noted drilling break (> 200m/hr) from 2012-2015m (SST). Flow checked wellstatic 10min - neg.

2,033 Drilled 2015·2033m. w/16~OklbsWOB, 150-160rpm, 700gpm , 3550psi. 3 6kft-Ibs torque. ROPs 6·200m/hr (through sands); rpm(string stalling}/torque/R OPcont erratic through sands.

2,147 Drilled 2033-2147m, w/1 0-40klbs WOB, 150rpm, 700-640gpm , 3550psi. 3 8kft·lbs torque (occasional formation-related stalling). ROPs 6-300m/hr-all drillingbreak flow checks negative.

2.157 Drilled 2147-2157m. wi parameters a/a. Experienced string stalling & assoc atedhigh torque levels (correspond wI similar stalling/torque on Yolla 1). Lossesincreasing to >50bph·begin adding Kwikseal LCM w/o sig. results.

2,175 Drilled 2157·2175m, w/10-40klbs WOB, 150rpm, 680gpm, 3580psi, 3-10k -Ibstorque (occasional formation-related stalling). Downhole losses cont at varicble&erratic 30 • 60bph (no LCM effect apparent).

0352722058

.25

3.50

1.50

3.50

2.25

13.00


AustraliaBass Basin


Dowell I-----------L----------I.-------+---I12.581.594.0

0:00 02:15

06:00 19:00

20:30 24:00

02:15 02:30

02:30 06:00

19:00 20:30

FROM TO

Well DataCOUNTRYFIELDDRILL CO, ;RIG:

MUD CO:RT ABOVE MSL (m) ;WATER DEPTH @MSL (m) :RT TO SEABED (m) ;


Premier Oil

I 30/04/1998 09: 55

IIIIIIIIIIII.. 00:00 06:00 6.00 2,217 Drilled 2175-2217m, wi 10-42klbs WOB, 150rpm, 680gpm, 3550psi, 3-10k '+-lbs1- torque (occasional formation-related stalling). Downhole losses cont at varic ble &

erratic @ < 30bph.


ANNOTATIONS FOR PERIOD 00:00 HRS TO 24:00 HRS ON 29.04.98IIIIIII

Shut down cranes @ 24:00hrs, due to wind gusts inexcess of 39 knots.Schlumberger welders on location to replace the 4" ventline and all plumbing for the burners. Noted that the gasflow line 1s 3", not 4" as had been relayed to Premierinitially.Pump rate reduced to control downhole losses.

Geoservice compensated depth recording not functioningproperly - advances faster that the actual drilled depth,and needs to be constantly re-set manually.Experiencing continuing downhole (osses, variable ratefrom 4 - 90bph. increasing to an average of 30 - 40bphbelow 2133m. Treated with total of 24sx Kwikseal over4hr period, but no noticeable abatement in loss rate fromLCM additions; cont to be variable & partially self-healing.

CopyrighllDS Pty Ltd. RbtofB report Mar 16th 1998.1

Investigate if 3" line adequate and/or if sufficienttime/materials remains to change over to 4" lines.

Mobilised calcium carbonate and liqUid Casing LC MmaterialNew circuit board on order; will be exchanged upo~

arrival.

Uncertain if LCM spotted pills will be effective, as Erraticnature of losses seems to indicate drilling into new thiefzones constantly, rather that having one or more tt iefzones further up the annulus.

Page Numbe 1

MO NO INCL AZ CaRR. 'V DOGLEG N/S EfW TOOL TYPE(m RT) (m RT) DEG (deg) ;.z SECT (mI30m) (m) (m)

(deg) (m)

1.190 0,00 AJdri1.232 0,00 Ndri1,389 1.00 Ndri1,475 0.00 Ndri1.631 0.00 Ndri1.710 0.00 Aldri1.829 0.50 AJdri1.994 0.00 AJdri

573

2314

Z

04/04

#

PAG

Page Number; 3

Slow PumD D.ta

COMPANY NAME

PremierNorthernCementAsiatleROVMudGeoServieesOther

SPP SPM SPP DEPT)- MW(psi) (psi) (m R1) (ppg)

CAlLY DRILLING REPORT Ii 26

Yolla-2

P mn Data - last 24 hrs

PREMIER OIL GEELONG

JOB TITLE NAME

1 Nat. 12-P· 6.50 69 97 6802 Nat. 12·P· 6.50 68 97

#- TYPE LNR SPM EFF Flow(") (%) (Ilpm

Drlg Supervisor KnoblN. Drlg Supervisor Oubravsc

Geologist Frankiewicz

Northern Explorer P Cox & Milroy

Pump Data

3550 30 475 214 9.340 600 214 9.350 775 214 9.3

N.VAM 3D 475 214 9.3N.vAM 40 575 214 9.3

N.VAM 1I~;:;==~;;;~~~~~~~;;=;;;=50;;;=7=7=5;;;;=2=1=4~=9=.3~N.VAMlliN.VAM Personnel: on Site =90N.VAM

L80L80L80LSOL80LBO

853 853

6B.068.068.068.068.068.0

WT GRO THREADIbslft

12.412.412.412.412.412.4

0352722058

CSG10 (")

14.911.512.3

713.43.15.5

LNGTH(m)

LOT PHASE CSG SHOE eSG SHOEMD TVO (mBRT)

TYPE

13.3/8 "

Shoejt1 xjtF/Coliar jt62 xjts1x pup "A"WHjt

CasinaeSG00(")

Survey

Last Tool Type: AId rift


Copyright IDS Ply Ltd. RbtofB repon Mar 16th 1998.1

I 30/04/1998 09: 55


IIIIIeIIIIII_IIIIIII

I 29/04/1998 09: 15 0352722058 PREMIER OIL GEELONG PAG 01104

Please find attached the Daily Drilling report for 28~ April 1998.



D Please Recycle


Date: April 29, 1998

From: Gordon Hunter

Pages:

cc:

D Please Replyo Please CommentD For Review




Re:

•Comments:

Phone:

Fax~

D Urgent

To:

Regards

~Q~~Gordon Hunter

Fax:

IIIIIIIeIIIII

-IIIIII,

------------------------r-----~

0352722058 PREMIER OIL GEELONG PAG 02/04


Yolla-2

$160,354$6, 94,516

$10, 08,205

P&A

DAilY COST $ :CUM COST $ ;AFE COST $;

AFE BASIS:

12.2513.38

8530.00

CUR. HOLE size ("):CSGOD("):

SHOE TVD (m RT):

LEAK·OFF EMW(ppg)

1,994,0

264.019.13

CURRENT O~ @ 0600: Drilling 12 1/4" hole; depth @ 06:00hrs· 2033m,

PLANNED OP. : Drill 12 1/4" hole,

T.O, (m RT):~ROGRESS (m):

DAYS FROM SPUD:

DAYS +1· CURVE:

AustraliaBass Basin


Dowell 1----- -J.. .....10 -+__ 1

12,581.594.0

Well DataCOUNTRYFIELDDRILL eo. :RIG:

MUD CO:

RT ABOVE MSL (m) :



Drilled 121/4" hole. Cont to incur problems w/ compensator causing 1520klbs variation in WOB. Downhole losses stabilized <1 Obph average.

Formation Tops· This report c nly

II FORMATION ITOP( InBRD

II ECVM I 1,876


.257.50

10.25

0:00 06:00 6.00 1,771 Drilled 1710-1771m, wi 150-170rpm, 750gpm, 3300psi, 3-6k ft-Ibs torque.Attempt maintain 30l<.lbs WOB tor max ROPs but fluccuate@15klbs rangeabove/below desired wt due to compensator). Av ROP-13.4m/hr in clystn, sl stn,sstn, wI tr dolo.

1,877 Drilled 1771-1877m, w/15-42klbs WOB, 150-160rpm. 750gpm, 3500psi, 3-E k ftIbs torque. Av ROP·10m/hr. Noted Drilling Break - to 28+m/hr - @ 1875-1877m,wI coincidential flow increase (on flapper) from 50-100%.

1,877 Flow checked well static for 15min, due to drilling break· negative.1,994 Drilled 1877-1994m, w/16-40klbs WOB, 150-165rpm, 720gpm (reduced du ~ to

90% of liner max = 3600psi), 3550psi, 3~k ft-Ibs torque. Av ROP-15.5 (100 In/hrthrough sand, EVCM); rpm/torque/ROP erratic. Circ. carbide; est. holediameter=13.4".

06:00 16:15

16:15 16:3016:30 24:00



.25

3.50

00:00 02:15 2.25 2.015 Drilled 1994-2015m, wI 18-42klbs WOB, 150-160rpm, 700gpm (reduced du~ to90% of liner max =3600psi), 3550psi, 3-6k ft-Ibs torque. Raps 6-200m/hr(through sands); rpm(string stalling)/torque/ROP cont erratic through SST.

2,015 Noted drilling break (> 200m/hr) from 2012-2015m (SST). Flow checked wellstatic 10min - neg.

2,033 Drilled 2015-2033m, wi 16-40klbs WOB, 150-160rpm, 700gpm (reduced due to90% of liner max = 3600psi), 3550psi, 3-6k ft-Ibs torque. ROPs 6-200m/hr(through sands); rpm(string stalling)/torque/ROP cant erratic through sands

02:15 02:30



Began making-up new PHPA mud with 50:50 No negative affects on PHPA system with this teet niqueseawater:drillwater due to dimished stocks of drillwater (or with 100% seawater make·up) except 0.1 ppg ~ igheraboard. mudweight of new dilution volumes, arising from h gher

level of soluble salts.

Some increase in PY & gels, % solids,% LGS, but nosignificant problems at this point, as normal new muddilution volumes sufficient to maintain control of allvalues.

Will slightly decrease 6rpmIYP values - to 11-12/-~5 - toaid solids dropping at solids equipment, withoutimpairing hole cleaning capability. KCI appears we 1balanced to formation activity and PHPA eoncentr.~tion

effective in minimizing solids dispersion; cuttings r~main

firm & discrete.Continue to ream each stand before making connectionto wipe hole and move cuttings load up annulus beforeconnection. Continue to adjust MU torque as each singledrilled down to rotary table (TDS MU to 26k ft-Ibs;required MU torque for this size S135 DP is 36-38kft-Ibs).

Copyright IDS Pty Ltd, RbtofB report Mar 16th 1998.1 Page Numbl r: 1


I Premier Oil

IIIIIII


REMARK 1OBSERVATION

Cont to closely monitor downhole losses. These continueto appear to be self.healing, and have reduced since thebit trip. Average downhole losses for 24hrs estimated at+1-10bph.Cont discussions with marine dept re testing, rig move tonext location, etc.

Downloaded "Fix" for IDS program, placed in C drive"Temp" file, &double-clicked "Fix". It's supposed to thento un-zip & find the correct file & effect some positve

Iterations. Nothing positive observed after it un-zipped,ut for the 1st time, one of the pages - the Marine page·

prints twice, the second time without any data, Afterincluding this comment, everything shifted downward.and it printed correctly??


Yolla-2

SOLUTION I RECOMMENDATION

Rig will need +1- 300MT fuel before testing & as ba lastfor rig move. Will be able to save some of PHPA s\ stemif desired by transferring to lower reserve pits. Est. bestcase 4 days move & anchor handling wi 2 anchorhandling boats, 8 days+ with only one anchor hand er, If"wet storage" decided. will need to leave "E.J. Fairr ie" atunit anchor buoy. If weather window present, can rT avewith max. 100MT drillpipe in derrick.Suggest a "fix" for the "Fix" be expedited to the rig.

Mud Properties MUD COST FOR TODAY: $5,320 CUMULATIVE MUD COST TO DATE; $98,755

Type: VISCOSITY( sec I ql ): 59 A~I FLUID LOSS CI- (ppm): 34,000 SOLIDS (%\101) : 4.6(cm3130min) 5

KCI PV (cps): 19 K+ (ppm): 28875 H20 (%vol): 93.0API FILTER CAKE

FROM: FL YP (Ib/100sq.ft): 42 (32nds inch 1 HARD/Ca (ppm) : 80 OIL (%vol): 0

TIME: 23:00 GEL 10s/10m!30m HTHP FLUID LOSS MBT (ppb eq) : 75 SAND: 0

WEIGHT (1'1'9): 9.41 (lb/100sqft) : l' 15 0 (cm3/30min) 0 PM; .7 PH: 9.7

TEMP (C); 53 FANN 3/6/100 10 13 39 HTHP FILTER CAKE PF: .6 PHPA: 0.0(32nds inch) 0

Bit Data for Bit # 4

12.25

HU

ATMGT-1S

W15CB

1485

Calculated over the b t run

CUM,METERAGE (m) 509CUM. ON BOT, HRS : 33.5

CUM,IADe DRILL HRS: 42.3

CUM.TOT. REVS: 97,036ROP (m/hr): 12.0

Drilled oller the last 24 hrs

METERAGE (m): 284

ON 60nOM HRS : 18,5lADe DRILL. HRS : 24.0TOTAL REVS: 164.546ROP (m/hT): 11.8

NOZZL.ES3 X14

XX

X

X

25148

7203,500

S

7

AVE WOB (k-lbs):

AVE RPM:

FLOW (gpm) :

PUMP PRESS, (psi):

HSI (hp/sqi) ;

IADC# 4 4

SIZE(") :

MANUFACTURER:

TYPE:

SERIAL#:

DEPTH IN (m R1) :

DEPTH OUT (m Rn :

II

II

199199137137

Page Numbe 2

D,C. (1) ANN, VELOCITY (mpm):D.C. (2) ANN VELOCITY (mpm):H,W.D,P. ANN VELOCITY (mpm):D.P, ANN VELOCITY (mpm) :

14,120 I4,9243,500

171.4 ADT811

237 I TRQE MAX (ft-Ibs):228 TRQE ON (ft-Ibs):238 TRQE OFF (ft·lbs):

Anderdrift Survey tool

BHA # 6 Length (ttl :198.4HRS ON JARS: I STRING \NT(k-lbs) :WT BLW JAR(k-lbs): 40 PICK UP WT(k-lbs) ;BHA WT(k-lbs) : 59 SLK OFF WT(k-lbs) ;

8HA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL # COMMENT121/4" Tricone bit ·12114"NB Stab cJw float· 1-:'-__.......~-----+- __+-:-:- ---+__---~-~-+---1,S"Anderdrifl. S"Pony NMDC. 12 1/4" Stab _Totco 121/4" ATM GT-1B bit 42.3 W15CB Bit#3· HTC refurbished, Gaugedring. 8"NMDC. 12 1/4"Stab - 6xa"OC _Jar _ as 1/16" UG3x8"DC • ~o. 1 x HWDP _ dart sub _S X HWDP. 8" Hydra Jar 1651 2872 Weir Houston·Used in 171""

section.Used in 36" & 17 1/2" sectic n


IIIIIII

I 29/04/1998 09: 15 0352722058 PREMIER OIL GEELONG PAGE E:l4/E:l4,

.



Anchor Tension A1: 60.0 A:2 : 65.0 AJ; 85.0 A4: A5: 85.0

I (kips) A6: 70.0 A7: 80.0 A8: 70.0 A9: A10 :

Workboats Location. Fuel Barite Dfwtr Plwlr Cmt Bent HeJi Weather & Rig data @ 24:00 hrs(kltr) (sx) (bbl) (bbl) (sx) (SX) (kltr) VOL (kips: 400.0

I M. Raider at rig 177 421 WIND SP, (I<IS) ; 18,0 VISIB.(nm) : 6 RISTENS: 11Edward J. Fairnie at rig WIND OIR (deg) :305 CEILING (m) : 1,200 HEAVE (m) 0.5

PReS.(mba~): 1021 WAVES (m); 1.0 ROLL (deg): 0.5AIR TEMP (C): 14.0 SWELL (m): 1.8 PITCH (deg : 1.0

I ICOMMENTS: All anchors piggied: all aneho~ pretensioned to 200kips. Tension meter on #4 winch broken. Rec. 2 chopper: 18 PAX 0 to rig,15 off. BOlh standby boals at rig.

IBulk Slocks Used /In Siock Used lin Stock Used /In Stock Used /In Sto kDRILL WATER (bbl) :333 1,837 FUEL (bb!) : 15 1.311 GEL (sx): 0 551 HELI·FUEL (kltr) : 0.6 144POT WATER (bbl): 0 1,434 BARITE (sx) : a 7.209 CEMENT (sx) : a 5,842

I IllS' Permits & Inspection!DRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

TRIP DRILL BOP TEST 22/4/98 LTI 25/4/98

I FIRE 26/4/98 NEXT TEST DUE DATE MTI 17/4/98PIT DRILL 28/4/98 RIG INSPECTION 1714/98 JSA ongoingINCIDENT DAYS SINCE LTA 3 #PlW ongoing


I Casin~ Pump DataCSG LOT PHASE CSGSHOE CSG SHOE Puma Oata· last 24 hrs Slow PumD Oat00(") MD TVD (m8RT) 11 TYPE LNR SPM EFF Flow SPP SPM SPP DEPTH MW

I 13.3/8 " 853 853 (") (%) (gpm (psi) (psi) (m RT) (Ppg)

1 Nat. 12-P· 6.50 70 97 700 3500 30 450 1575 9,3TYPE LNGTH CSG WT GRD THREAD 2 Nat. 12-P· 6.50 70 97 40 575 1575 9.3

(m) ID(") Ibslfl: 50 700 1575 9.3

I Shoe]t 14.9 12.4 68.0 L80 N.VAM 30 400 1575 9.31 xjt 11.5 12.4 68.0 L80 N.VAM 40 525 1575 9.3

F/Collar jt 12.3 12.4 68.0 L80 NVAM 50 725 1575 9.362 xjls 713.4 12.4 68.0 LBO N.VAM

I1 x pup "A" 3.1 12.4 68.0 LBO N.VAM Personnel: on Site =84WHjt 5.5 12.4 68.0 LBO N.VAM


Orlg Supervisor Knobl Premier 3

t- N, Drlg Supervisor Dubravac Northern 70Cement 2

Geologist Frankiewicz Asiatic ROV 3Mud 1

Northern Explorer P Cox& Milroy GeoServices 4

I Other 1

Survey MD TVD INCL FV.. CORR. 'V' DOGLEG N/S ENV TOOL TYPE

I Last Tool Type: Aidrift (m Rl) (m RT) DEG (deg) AZ. SECT (mI30m) (m) (m)(deg) (m)

Magnetic Declination: 12.60 1,045 0.00 AldriftSurvey method: Min Curvature 1,190 0.00 AId rift

I1,232 0.00 AId rift1,389 1.00 AIdrift1,475 0.00 AId rift1,631 0.00 AldrJft

I1,710 0,00 AId rift1,829 0,50 AId rift

II

Copyright IDS Ply Ltd. RbtofB report Mar 1611'11998.1 Page ~umber : 3

I

I 28/04/1 gg8 10: 07 0352722058 PREMIER OIL GEELONG PAG 01/04

Please find attached the Daily Drilling report for 27l/'1 April 1998.

Gordon Hunter


D Please Recycle

ee:

Pages:


Fronr. Gordon Hunter


o Please Reply

I - '- I

lt0lJ1 ~~~\N ~

D Please Commento For Review




-Comments:

Re:

o Urgent

Phone:

Fax:

To:

Premier Oil AustralasiaGeelong Opeicltions BasePhone; 0352722101Fax; 0352722058

Regards

C{.&.~'

Fax

IIIIIIIeIIIIIIe

IIIIIII

Summary of period 00:00 to 24:00 hrs: Formation Tops - This report c nly

RIH - precautionary ream last 2stds - drill 12 1/4" hole from 1485 -1710m. II FORMATION ITOP(rnBRT)

00:00 06:00 6.00 1,771 Drilled 1710-1771m, w/150-170rpm, 750gpm, 3300psi, 3~6k ft-Ibs torque.Attempt maintain 30klbs WOB for max ROPs but fluccuate@1 5klbs rangeabove/below desired 'Nt due to compensator). Av ROP-13.4m/hr in c1ystn, s tstn,sstn, wI tr dolo.

ROV bulls eye jump 27/4 revealed that the PGB bulls Continue to monitor bulls eye for indications of PG~eyes had Shifted slightly, from aft/port to port (post #3 to shifting.post#4). Both indicator remain 3/4deg. If the old sonar assy has not already been onpass ~d,

Also, some reoccurrent electrical faults manifest please return it to the rig (fax sent to Geelong).themselves in the topside sonar unit. These can possiblybe exchanged with parts from the old unit which wasshipped to the Geelong yard for onpassing.Heaved in on #1 anchor a total of 21 m, until sometensioning noted. Tensioned up to 200kips, & heldtension 10min - okay. Reposition vessel over well, andadjusted anchors as needed to correct working tensions.Re-ran repaired Yellow pod as soon as seas abatedsufficiently to work in moonpool and jump the ROV.Re-Iatch successful; tested Yellow pod· okay; no visibleleaks.


02/04

$ 76,904$6, 34,162

$10, 08,205

PM

PAG

Page NumbEr; 1

DAilY COST $ :CUM COST $;

AFE COSTS:

AFE BASIS:

12.2513.38

8530.00


Yolla-2

CUR. HOLE SIZE ("):eSGOD(") ;

SHoe TVO (m RT):

LEAK-OFF EMW(ppg)

PREMIER OIL GEELONG

1,710.0

225,018.13

eURRENTOP @ 0600; Drilling 12 1/4" hole: depth @ 06:00h~ - 1771m,

PLANNED OP, ; Drill 12 1/4" hole.

T,D. (m RT):PROGRESS (m);

DAYS FROM SPUD:

DAYS +/- CURVE. :

1,485 RIH to 750m with 8HA#6, bit #4.1,485 Break circulation at 750m. Check weather conditions, forecasts.1,485 RIH from 750 - 1433m. No excessive drags (> 10klbs) observed while RIH.1,485 Precautionary wash and ream bottom 2 stands, from 1433· 1485m, with 80 pm,

600gpm, 1900psi, & 2.5-4k ft-Ibs torque. Normal drags«10klbs) and normaltorque «4k tt·lbs) observed.

1,485 Took SCRs on both pumps with 30, 40, & 50spm. Filled in kill sheets.1,485 Bedded in new bit #4 with 0-4klbs WOB, 80-100rpm. 600gpm, and 2000psi.1,575 Drilled 1485·1575m, w/150-170rpm, 750gpm, 3300psi, & 3-6k ft-Ibs torque.

Gradually increased WOB from 5 • 30klbs to optimize ROPs- improved to 1 +m/hr (incl connections) wI increased WOB. (- 15klbs differential due tocompensator).

1,575 Experienced power shut-down on rig. electrician accidentally engaged theEmergency Shut Down while testing it (emergency generator, etc., came on ine& functioned as intended).

1,710 Drilled 1575.1710m, wi 150-170rpm, 750gpm, 3300psi, 3-6k ft-Ibs torque.Attempt maintain 30klbs WOB to max ROPs(cont to fluccuate@15klbs rang~

around desired wt due to compensator). Av ROP-13.4m/hr in clystn, sltstn, ~ stn,wI tr dolo.

0352722058

.25


,25,25

8.00

1.75.25

2.001.00

10.25


AustraliaBass Basin


Dowell ...----------L---------.L.--------+-_I12.581.594.0

10:07

13:45 24:00

05:00 05:1505:15 05:3005:30 13:30

0:00 01 :451:45 02:00

02:00 04:0004:00 05:00

13:30 13:45

FROM TO




Well DataCOUNTRYFIELDDRILL CO. :RIG;

MUD co:RT ABOVE MSL (m) :WATER DEPTH @MSL (m) :

RT TO SEABeD (m) :


Copyright IDS Pty Ltd. RbtofB report Mar 16th 1998.1

Premier Oil

I 28/04/1998

IIIIIIIIIIIIIIIIIIII

VISCOSITY( sec 1'It): 66 API FLUID LOSSPV (cps) : 19 (cm3J30min)

API FILTER CAKEYP (lb/1QQsCl.ft): 37 (32nds InchGEL 10s/10m130m HTHP FL.UID L.OSS(lb/'OOsqft); 10 13 ° (cm3/30min)FANN 3/61100 10 13 36 HTHP FJLTER CAKE

(32nds Inch)

Received report from Dave Lansdell, HOSE SUbSea Eng,re the excessive time needed to rig up & run the BOPsand Riser. Read & faxed to Geelong.

Northern must organize a more staggered crew chc nge,especially for its senior commuters, to avoid the po sibleinterruption of operations that these large scale cha ngescreate, This must be organized before the nextscheduled 28 day crew change.Attempt to implement as possible recommendation s,especially in regards to training, proper tools, workplatforms and ladders, inertia reels and their properplacement, appropriate work vests, tugger arrange nent,etc.Downhole losses were apparently self-healing, aidedperhaps by the Kwikseal LCM additions; the shake~

losses moderated due to the calmer seas Which m antthat there were fewer shaker losses due to the swe I.

REMARK I OBSERVATION

Incident with roughneck and damaged finger: Doctorsremoved the finger nail, and dressed finger. no bonedamage.Re 10m discrepancy on drillpipe tally· Geoservice andgeologist completed remarking samples, repairingdatabase & mud log to reflect correct depths (IDS reportfixed yesterday).Re Northern crew changes: significant portion of Northernpersonnel changing out this week on Tuesday orThursday, which will result in lack of continuity.

03/04

3,794.0

oo

9,9

0.0

PAG

Calculated OV8r the b t n.mCUM.METERAGE (m) 225CUM. ON BOT. HRS : 14.9

CUM,lADe DRILL HRS 18.3CUM.TOT. REVS: 39,651ROP (m/hr): 12.3

OAllY DRILLING REPORT # 24

Yo la-2

SOLUTION I RECOMMENDATION

CI - (ppm) : 34,000 SOUDS (%vol) :6 K+ (ppm) : 26250 H20 (%vol) :

1 HARD/Ca (ppm) : 60 OIL (%vol) :MBT (ppb eQ) : 7.5 SAND;

o PM: .6 PH:

° PF: .5 PHPA:

I II 01 IL::Q:]CDC[']~I 02 II R III Ic=JCJc=Jc:::J1 II I

Drilled over the last 24 h~

METERAGE (m) : 225ON BOnOM HRS : 14.9IADC DRILL.. HRS : 18.3TOTAL REVS: 139,651ROP (m/hr): 12.3

CUMULATIVE MUD COST TO DATE: $93,602

PREMIER OIL GEELONG

Wear

NOZZLES

3 X14

XX

X

X

27

156

736

3.341

1

74

AVE WOB (k.lbs):

AVE RPM:

FLOW (gpm):

PUMP PRESS. (psi):

HSI (hp/sql) :

IADC# 4

0352722058

MUD COST FOR TODAY: $13,805

12.25HU

ATMGT-18

W15CB

1485

Downhole &shaker losses both significantly reducedafter the bit trip. Before the trip, total mud losses hadbeen> 40bph; afterwards, +/-10bph.

I 28/04/1998 10: 07


IIIIIII Mud Properties

Type:KCI

I FROM: FLTIME: 22:30WEIGHT (ppg): 1,10TEMP (C): 49

I Bit Data for Bit # 4

SIZE(") :

I MANUFACTURER:

TYPE:

'

:E:RIAL#:

I EF'TH IN (m RT) :

DEPTH OUT (m RT) :

2'42'4147147

PagG Number. 2

D.C. (1) ANN. VELOCITY (mpm):D.C. (2) ANN VELOCITY (mpm):HW.D.P. ANN VELOCITY (mpm):D.P. ANN VELOCITY (mpm) :

12.418

14,9852.550

225 ITRQE MAX (ft-Ibs):215 TRQE ON (ft-Ibs):220 TRQE OFF (ft-lbs):


BHA # 6 Length (It) :198.4HRS ON JARS: ISTRING WT(k-Ibs) :wr BLW JAR(k-lbs): 40 PICK UP WT(k-lbs) :BHA WT(k·lbs) : 59 SLK OFF WT(k-lbs) :

r---------,---,----,..--------f----,IBHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL # COMMENT12 1/4" Tricone bit -12114"NB Slab r:Jw float - 1--~:..:::..::..:::..:....:..:....~.:..::.:..:..---1.-.;;..;.;;..+_~,;.,..:;...=...:.:___1I__--.-.;;..;;...;.;..,.;:....;.,-+-___l18"Anderdrift _S"Pony NMDC • 12 1/4" Stab _Totco 12 1/4" ATM GT-1 S bit 18.3 W15CB BIt#3 - HTC refurbished. Gauged

as 1/16" UGring - S"NMDC -12 1I4"Stab· 6x8"DC· Jar· 8" Hydra Jar '41.1 2872 Weir Houston.Used in '7 1 .,"3x8"DC - ~o - 1 x HWDp· dart sub· 8 X HWOP. section,"

147.4 AOTS11 Used in 36" & 17 '/2" secti n


IIIIIII

I 28/04/1998 10:07 0352722058 PREMIER OIL GEELONG PAGf 04/04



Anchor Tension A1 ; 60.0 A2: 65.0 A3: 90.0 A4: AS: 80.0

I (kips) A6: 70.0 A7: 75.0 AS: 75.0 A9: A10 :

Workboats Loeation. Fuel Barile Dfwtr Plwlr Cmt Sent HeJi Weather & Rig data @ 24:00 hrs

I(kltr) (sx) (bbl) (bbl) (sx) (sx) (kltr) VOL (kips: 300.0

M. Raider at rig 178 453 WIND SP. (kls) : 14,0 VISIB.(nm) : 10 RIS.TENS: 11Edwar J. Fairnie at rig WIND DIR (deg) :228 CEILING (m) : 1,200 HEAVE(m) 0.5

PRES.(mbars): 1021 WAVES (m): 1.5 ROLL (deg): 0.5AIR TEMP (C): 12.0 SWELL (m): 2.3 PITCH (deg : 1.0

I ICOMMENTS: All anchors piggied. Reset anchor #1 & pretensioned to 200kips. Tension meter on #4 winch broken. Rec. 0 Chopper: 0 ~AX

onto rig. 0 off. Both standby boats at rig.

I Bulk Stocks Used lin Stock Used lin Stock Used lin StOck Used lin Sto k

DRILL WATER (bbl) ;680 2,170 FUEL (bbl): 15 1,326 GEL (sx): 0 551 HEll-FUEL (kltr) ; 0.0 15.0

POT WATER (bbl) : 0 1,151 BARITE (sx) : 0 7,209 CEMENT (sx) : a 5,842

I rills, Permits & Inspection!DRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

ITRIP DRILL BOP TeST 22/4/98 LTI 2514/98FIRE 26/4/98 NEXT TEST DUE DATE MTI 17/4/96PIT DRILL 28/4/98 RIG INSPECTION 17/4/98 JSA ongOingINCIDENT DAYS SINCE LTA :2 #PTW ongoing


I Casina Pump DataCSG LOT PHASE CSG SHOE CSGSHOe PumD Data - last 24 hrs Slow PumD DalOD(") MD TVD(mBRD # TYPE LNR SPM EFF Flow Spp SPM SPP DEPTH MW

I 13.3/S" 853 853 ('1 (%) (gpm (psi) (psi) (m RD (ppg)

Nat. 12-p·TYPE CSG

1 6.50 75 91 750 3350 30 375 1575 9,1LNGTH Wi GRD THREAD 2 Nat. 12-P· 6.50 75 97 40 500 1575 9.1

(m) ID (") Ibslft 50 675 1575 9.1

I Shoe jt 14.9 12.4 68.0 LBO N,VAM 30 375 1575 9.1

1 xjt 11,5 12.4 68.0 L80 N.VAM 40 490 1575 9.1

F/Collarjt 12.3 12,4 68.0 L80 N,VAM 50 625 1575 9.1

62 xjts 713.4 12.4 68.0 LaO N.VAM

I 1 x pup "A" 3.1 12.4 68.0 Lao N.VAM Personnel: on Site ~ 81WHjt 5.5 12.4 68.0 LBO N,VAM


r- Drlg Supervisor Knobl Northern 67NIS Oris Sup. Dubravac Cement 2

AsiaticROV 3Geologist Frankiewicz Mud 1Northern Explorer P Cox& Milroy GeoServices 4

IOther 1Premier :3

ISurvey MD TVD INCL AZ. CORR. V DOGLEG N/S EJW TOOL'TYPE

Last Tool Type: AIdrift (mRD (mRT) DEG (deg) /42. SECT (m/30m) (m) (m)(deg) (m)

Magnetic Declination: 12.60 984 0,50 Aldri

ISurvey method: Min Curvature 1,016 0.00 Aldri

1.045 0.00 Aldri~

1.190 0.00 Aldri,\1,232 0.00 Aldril\1,389 1.00 AldrilL

I1.475 0,00 Aldri1,631 0.00 Aldri

II

Copyright IDS Ply Ltd, RbtofB report Mar 16th 1998.1 Page Numb r: 3

I

Please find attached the Daily Drilling summary report for 26th April 1998.


Premier Oll AustralasiaGeelong Operations BasePhone: 0352722101Fax: 0352722058

PAG 01/02

~I

o Please Recycle


From: Gordon Hunter

Pages:

cc:


D Please Reply

PREMIER OIL GEELONG

D Please Comment

0352722058

D For Review

Boral Energy Resources, Attn: A. Guthrie, Ross Naumann



Santos Ltd., Attn: Neil Tupper

Mineral Resources Tasmania, Attn: Carol Sacon


Re:

-Comments:

Fax:

D Urgent

Phone:

Gordon Hunter

To:

Regards

C·~-~

Fax


I 27/04/1998 09:59


Premier OilManagement Report :

I 27/~4/1998

II

09:59 0352722058 PREMIER OIL GEELONG

Issue date 27.04.98

PAG 02/02

Ahmed NadjiAndrew AdamsAngus GuthrieCarol BaconNeil TupperRoss Naumann

REP. NUMBER: 23 REP. DATE : 26.04.98

RIG: Northern Explorer IIIDRILLING CO.;

EPTH (m): 1,485.00 PROGRESS (m) 54.00 DAYS FROM SPUD H.1~

HOLE SIZE ("): 12.25

DAYS +1- CURVE:

24 hr SUMMARY; Drill 12 1/4" hole to 1485m. POOH for tri-cone bit. Lost #1 anchor tension - RIH

STATUS AT 0600: Drilling 12 1/4" hole; depth @ 06:00hrs - 1488m.

PLANNED OP: Drill 12 1/4" hole.

202202139139

2,595.0

ao

9,5

0.0

Calculated over the bit run

CUM.METERAQE (m) 633CUM, ON BOT. HRS: 34.9

CUM.JADC DRILL HRS; 72.0CUM,TOT. REVS ; 33~,560

ROP (m/hr): a,s

DIFF. AFE-CUM $3,650,9i 7

D.C. (1) ANN. VELOCITY (mpm):16,000 I D.C. (2) ANN VELOCliY (mpm):5,410 H,W.D.P. ANN VELOCITY (mpm):2,250 D.P, ANN VELOCITY (mpm) ;

Cl • (ppm) : 38,000 SOUDS (%vol) :5 K+ (ppm) : 26250 H20 (%vol) :

1 HARD/Ca (ppm) : 200 OIL (%vol) :M8T (ppb eq) ; 7.0 SAND:

o PM: .3 PH:

o PF: ,4 PHPA:

Drilied over the last 24 hrs

METERAGE (m); 64

ON BOTTOM HRS : 5.8JADC DRILL. HRS : 10,5TOTAL REVS: 55.584ROP (m/hr): 6.1

CUMULATIVE MUD COST TO DATE: $79,630

AFE : $10,108,205

Wear ITJro11ITJILlIT][IJ[QU Rlo:::JE:TIITOIT1D:JOZLlCE8J Pf~

NOZZLES:3 x122X14

XX

X

4

160

723

2.217

o

210 ITRQE MAX (ft·lbs):200 TRQE ON (ft.lbs):205 TRQE OFF (tt-Ibs);

2


2

CUM : $6,457,258

AVE WOB (k-Ibs):AVE RPM:

FLOW (gpm) :

F='UMP PRESS. (psi):

HSI (hp/sqi) :

IADe# M

VISCOSITY( see / Qt ); 67 API FLUID LOSSF='V (cps): 17 (c.m3/30min)

YP (lb/100sq.ft): 40 mrFr1Hn~~CAKE

GEL 10s/10m/30m HTHP FLUID LOSS(lb/100sqft) : 11 14 0 (cm3/30mill)FANN 3/6/100 9 12 36 HTHP FILTER CAKE

(32nds inch)

MUD COST FOR TODAY; $8.278

$153,391

FL06:30

1.0949

BHA ill 5 Length (tt) :198.4HRS ON JARS: ISTRING lNT(k.lbs) :WT BLW JAR(k·lbs): 38 PICK UP WT(k-lbs) :8HA WT(k-Ibs) : 56 SLK OFF WT(k-lbs) :

~--- -----r----r----....---------+--"8HA DESCRIPTION: TOOL DESCRIPTION HRS SERJAL # COMMENT12 1/4"PDC bit -12114"NS Stab eJw float. 1-----------+--+-----+-------=-----+--118"Anderdrift. 8"Pony NMDC • 12 1/4" Stab. TOICO 121/4"PDC AG526 bit 72.0 1402214 Bit#3· HTC refurbished, Gau~ ed

as 1/16" UGring-S"NMDC-121/4"Slab-6x8"DC-Jar. 8"HydraJar 117,12872 W' H U d' 171/2"3x6"DC - vo -1 x HWDP - dart sub _8 X HWDP. elr OUSIOM- se 1M

section,123.4 ADT811 Used in 36" & 17 1/2" section

Mud Properties

Type:KCIFROM;TIME:WEIQHT (ppg):TEMP (C):

IIII '-------~--------I---JI

III

~it Data for Bit # 3

I ~ZE("): 12.25MANUFACTURER: HU

TYPE: AG526

I SERIAL # ; 1402214

DEPTH IN (m Rn : 862

DEPTH OUT (m RT): 1485

I Copyright IDS PlY Ltd. Rbtof8 reoort Mar 16th 1r;,Cl~ 1


Please find attached the Daily Drilling report for 26~ April 1998.

Gordon Hunter


l,./

o Please Recycle


From: Gordon Hunter

Pages:

cc:

Date: April 27. 1998





Re:

-Comments:

Fax:

Phone:

o Urgent

To:

Premier Oil AustralasiaGeeIClng Operations BasePhone: 0352722101Fax: 0352722058

Regards

~.U(~

Fax




Summary of period 00:00 to 24:00 hrs: Formation Tops - This report c nly

Drill 12 1/4" hole to 1485m. POOH for tri-cone bit. Lost #1 anchor tension - II FORMATION ITOP' nBRD

RIH

S 53,391$6,~ 57,258

$10, 08,205

P&A

PAG 02/04

Page Numb9 : 1


Yolla-2

PREMIER OIL GEELONG

1,485,0 CUR. HOLE SIZE ("): 12.25 DAILY COST S :54,0 esc; 00 ("1: 13.36 CUM COST $ :

17.13 SHOE TVD (m RD: 853 AFE COST $:

LEAK.OFF EMW(PPQ) 0,00 AFE BASIS:

CURRENT OP @ 0600; Drilling 12 1/4" hole: depth @ 06:00hrs· 1488m.

PLANNED OP.: Drill 12 1/4" hole,

T.D, (m RT):PROGRESS (m);

DAYS FROM SPUD:DAYS +/- CURve:

0352722058

.25

.25,50

4.00 1,451 Drill 1421-1451m, wI 0-16klbs WOB, 170-200rpm, 750-850gpm, 2400-29001 si,2-16k ft-Ibs torque. ROPs 2-20m/hr, w/stalling. Downhole losses 20bph - 701 ph.Added sack LCM to active. ROPs slowly increasing wI lessening sltstn %.

1.00 1,464 Drill 1451-1464m, wI 0-16klbs WOB, 170-200rpm, 850-700gpm, 2300-2900, si,2-16k ft-Ibs torque. ROPs 2-20m/hr. w/stalling @ 16k ft-Ibs. Cant downholelosses max 75bph. Reduced flowrate to 700gpm. Pyrite evident from 1465 1474m,

5.50 1,485 Drill 1464-1485m, wI 0-16klbs WOB, 170-200rpm, 700gpm. 2200psi, 2-16k -Ibstorque. ROPs 2-20m/hr, w/stalling @ 16k ft-Ibs. Cont downhole losses max75bph. Added sack LCM to active. Cant high torque & low ROPs.

1.00 1,485 Cire & condition mud prior to POOH for bitlBHA change. Dropped carbide toestimate hole diameter - > 14".

.50 1,485 Flow checked well static - okay. Pumped 30bbls slug @ 10.6ppg.5.50 1,485 POOH from 1485 - surface, with generally normal10-15klbs drags, except from

1050-1000m, where 50klbs O.P. was experienced. Worked 1050-1000m un ilclean, and continued POOH.

2.00 1,485 Observed Diverter not properly aligned with flOWline. Turned Diverter ass'y ir toproper position, and re-secured to flowline.

1.00 1,485 MU new BHA~ with bit #4, HTC ATM GT-18, w/3x14's. LID NB Stab (1/8"UG), and PU new NB Stab, running into hole wI BHA.

.75 1,485 Anchor #1 slipped (storm abating, but waves still> 4m), POOH wI BHA toprepare for emergency procedures.

1.75 1,485 Installed Diverter handling tool as precautionary measure while attepting toheave in and re-set anchor #1.

1.00 1,485 RIH wI bit#4 to shoe While waiting on weather to subside enough before con torun into open hole.


AustraliaBass Basin


Dowell I---------.....l.------__--I. -+__12.581.594.0

0:00 04:00

00:00 01 :45 1.75 1,485 RIH to 750m with BHA #6. bit #4.01 :45 02:00 ,25 1,485 Break circulation at 750m. Check weather conditions. forecasts.02:00 04:00 2.00 1,485 RIH from 750 -1433m. No excessive drags (> 10klbs) observed while RIH.04:00 05:00 1.00 1,485 Precautionary wash and ream bottom 2 stands, from 1433 - 1485m, with 80 pm,

600gpm, 1900psi, & 2.5-4k ft-Ibs torque. Normal drags«10klbs) and normaltorque «4k ft-lbs) observed.

1,485 Took SCRs on both pumps with 30, 40, & 50spm. Filled in kill sheets.1,485 Bedded in new bit #4 with 0-4klbs WOB, 80-100rpm, 600gpm, and 2000psi,1,488 Drilled from 1485-1488m, with 5-12klbs WOS, 120-160rpm, 600-700gpm, 2 )00-

2450psi. and 2·5k ft-lbs torque. Initial ROPs 4-5m/hr. but necessary to adjustparameters to optimize as well as slow pumps for BU solids loading @ shak~rs.

05:00 05:1505:15 05:3005:30 06:00

04:00 05:00

05:00 10:30

10:30 11:30

11:30 12:0012:00 17:30

17:30 19:30

19:30 20:30

0:30 21 :15

21:15 23:00

23:00 24:00

FROM TO


Well DataCOUNTRY~IELD

DRILL CO. :RIC; ;

MUD CO:RT ABOVE: MSL (m) :WATER DEPTH @MSL (m) :RT TO SEABED (m) :


Premier Oil

Copyright IDS Pty Ltd. RbtofB repOI1 Mar 16th 1996,1

27/04/1998 09:43IIIIIIIIIIIIIIIIIIIII

Mud Properties MUD COST FOR TODAY: $8.278 CUMULATIVE MUD COST TO DATE: $79,630

Type: VISCOSITY( see 1qt ): 67 API FLUID LOSS CI- (ppm): 38,000 SOLIDS (%vol) : 2.5PV (cps); 17 (cm3130min) 6 K+ (ppm): 26250 H20 (%vol): 95.0KCI API FILTER CAKE

FROM: FLYP (lb/100sq.ft): 40 (32nds inch 1 HARD/Ca (ppm) : 200 OIL (%vof): 0

TIME: 08:30 GEL 1Os/1 Om!30m HTHP FLUID LOSS MBT (ppb eq) : 7.0 SAND: 0

WEIGHT (ppg): 1.09(lb/100sqft) : 11 14 0 (cm3130min) 0 PM: .3 PH: 9.5

TEMP (C); 49 FANN 316/100 9 12 38 HTHP FILTER CAKE PF: .4 PHPA: 0,0(32nds inch) 0

Bit Data for Bit # 3 lADe. PIA 2 2 1 Wear I II 01 1~Et3B3~~~;g1 II 6 I CT S X 3/8 NRIZE ("): 12.25 NOZZLES Drilled over the last 24 hrs Calculated Over the t it run

MANUFACTURER; HU AVE WOB (It·lbs): 4 3 X12TYPE: AG526 AVE RPM :

METERAGE (m) ; 64 CUM.METERAGE (m) 633160 2 X14 ON BOTTOM HRS : 5.8 CUM. ON BOT. HRS : 34.9

SERIAL # ; 1402214 FLOW (gpm) ; 723 X IADC DRILL. HRS : 10.5 CUM.IADC DRILL HRS: 72.0DEPTH IN (m RT) ; 662 PUMP PRESS. (psi): 2,217 X TOTAL REVS: 55.584 CUMTOT. REVS: 34.560D~PTH OUT (m RT) : 1485 HSI (hp/Sqi) : 0 X ROP (m/hr): 6.1 ROP (m/hr): 8.8

03/04

202202139139

PAG

Page Number: 2


Yclla-2

D.C. (1) ANN. VELOCITY (mpm):16.000 I D.C. (2) ANN VELOCITY (mpm);

5,410 HW.D.P. ANN VELOCITY (mpm):2,250 D.P. ANN VELOCITY (mpm) :

SOLUTION 1RECOMMENDATION

123.4 ACTS11

PREMIER OIL GEELONG

Problem apparently arose from incorrect number 0 jtsof 5135 DP manifested aboard. After making up st:3ndsand singling in the remainder, the remaining jts left overwere counted. Because the count of total jts onboardwas short by one. the total number of jts in the hole andderrick was also one jt short.

Recommend Dowell re-evaluate future programmi grequirements in light of adequate hole cleaningconcentrations and the geological prognosis ofdownhole loss possibility.

Allow anchor to soak, seas to calm, then attempt tcre-set with winch.

210 I TRQE MAX (ft·lbs):200 TRQE ON (ft-lbS);205 TRQE OFF (ft-lbs):


0352722058

REMARK/ OBSERVATION

09:43

Lost #1 anchor (fwd, abeam) tension @ 20:30hrs.Heaved on anchor 8m, but initial indications of slippage.Engaged thrusters and re-tensioned to pull back ontolocation the needed +/- 3m (operations were POOH w/BHA). Prior to loss of tension working tensions were100K.Calculated mud making capacity with current stocks inthe face of previous losses and the possibility ofcontinued losses. Ordered XCD polymer & less importantcontingency chemicals. Current mud making is limited byXCD stocks (IDVIS) to 3000bbls.Measured DP after POOH - discovered tally to be inerror, with one single fewer than tallyed actually in hole.Depth before trip actually 148Sm not 1495m as recorded,Confirmed true depth when bottom tagged after bit trip.Loggers remarked all data and samples by -10m, tocorrected depth. Will change all reported depths in IDSdata base below 865m by -10m.Examined BHA: top and middle String stabs 1/16" UG;jars good, no evidence of leaks. Examined NB Stab: 1/8"UG (laid down). Examined bit: 3/8" UG (gage cutters 1/4"UG). Bit with generally no wear across nose or taperarea, but top 3 rows of cutters (gage/shoulder area) on allblades with severe chipping (to 60-70% of cutter area)evident.

BHA # 5 Length (ft) :198.4HRS ON JARS: ISTRING VVT(k-Jbs) :'NT BLW JAR(k·lbs); 38 PICK UP WT(k·lbs) :BHA WT(k-lbs) ; 56 SLK OFF WT(k-lbs) :

r-----------,---,- --,---------+--....,IBHA DESCRIPTION: TOOL DESCRIPTION HRS SERIAL # COMMENT12 1/4"PDC bil -12/14"NB Stab r:Jw float. 1-----------l---+----O+--------+---i18"Anderdrlft _8"Pony NMDC _12 1/4" Stab. Tolco 12 1/4"PDC AG526 bit 72.0 1402214 Bit#3· HTC refurbished. G. uged

as 1/16" UGring - 8"NMDC - 12 1/4"Stab - 6x8"DC· Jar· 8" Hydra Jar 117.1 2872 Weir Houston-Used in 17 1 ..,,,3xS"DC - xlo - 1 x HWDP· dart sub - 8 X HWDP. sedion....

Used in 36" & 17 1/2" sedi n


Copyright IDS Pty Ltd, RbtofB repon Mar 16th 1998.1

Premier Oil

IIIIIIIIIIIII

I 27/04/1998

IIII,I

I


,


I Report Date: 26.04.98 Yc. lIa-2

Anchor Tension 10.1: 40.0 A2: 55.0 A3: 60.0 10.4: AS: 70.0

I (kips) 10.6: 60.0 A7: 70.0 A8: 90.0 10.9: A10 :

Workboats Location. Fuel Barite Dlwtr Pl'wtr Cmt Bent Heli Weather & Rig data @ 24:00 hrs

I(kltr) (sx) (bbl) (bbl) (sx) (Sll:) (kllr) VDL (kips: 282.0

M. Raider at rig 180 478 WIND SP. (kts) : 28.0 VISIB.(nm) : 9 RIS.TENS: '1Edwar J, Fairnie at rig WIND DIR (deg) :200 CEILING (m) : 1,100 HEAVE (m): 1.0

PRES.(mbars): 1017 WAVES(m) : 2.5 ROLL (deg) : 1.5

IAIR TEMP (e): 13.0 SWELL (m): 4.2 PITCH (deg : 2.0

ICOMMENTS: All anchors piggied, Tension meter on #4 winch broken. #3 repaired. Rec. 0 chopper: 0 PAX onto rig, 0 off. Both standb boatsat rig, Anchor #1 slipped at 20:30hrs.

I Bulk Stocks Used lin Stock Used 1In Stock Used 1In Stock Used lin Slo kDRILL WATER (bbl) :642 2,850 FUEL (bbl): 13 1,341 GEL (sx); 0 551 HEll-FUEL (kltr) : 0.0 150POT WATER (bbl); 207 1.114 BARITE (5l1:) : 0 7,209 CEMENT (5l1:) ; 0 5,842

I rills, Permits & Inspectionl:DRILL TYPE DATE INSPECTIONS DATE SAFETY DETAILS

ITRIP DRILL BOP TEST 2214/98 LTI 2514/98FIRE 26/4/98 NEXT TEST DUE DATE MTI 1714/98PIT DRILL 2314198 RIG INSPECTION 17/4/98 JSA ongoingINCIDENT DAYS SINCE LTA 1 #PTIN ongoin9

Safety Meeling 26/4196

I Casina Pump DataCSG LOT PHASE CSG SHOE CSG SHOE P mrl D.:l t::l.I.:lst 24 h~ Slow Pumc Oat00(") MD TVD(mBRT) # TYPE LNR SPM EFF Flow spp SPM SPP DEPTH MW

I 13.3/8 " 853 853 (") (%) (gpm (psi) (psi) (mRT) (ppg)

Nal. 12-P· 6.50 30 1431 9.11 71 97 710 2250 400TYPE LNGTH CSG WT GRD THREAD 2 Nat. 12-P· 6,50 71 97 40 460 1431 9.1

(m) ID (") Ibs/ft 50 525 1431 9.1

I Shoejl 14.9 12.4 68.0 L80 N.vAM 30 400 1431 9.1

hjl 11.5 12A 68.0 LaO N,VAM 40 450 1431 g,1

FICcilar jt 12.3 12.4 68.0 L80 N.vAM 50 525 1431 9.1

62 xjls 713.4 12,4 68.0 L80 N.vAM

I 1l1: pup "An 3,1 12,4 68.0 LBO N.vAM Personnel: on Site = 81WHjt 5.5 12.4 68.0 Lao N.VAM

JOBTJTLE NAMe COMPANY NAME #.e Drlg Supervisor Knobl Northern 67NIS Drlg Sup. Dubravac Cement 2

Asiatic ROV 3Geologist Frankiewicz Mud 1Nonhern Explorer P Cox & Milroy GeoSer.tiess 4

IOlher ,Premier 3

Survey MD TVD INCL AZ. CORR. '\! DOGLEG N/S EM} TOOL TYPE

I Last Tool Type: AIdrift(m RT) (mRT) DEG (deg) AZ. SECT (mf30m) (m) (m)

(deg) (m)

Magnetic Declination: 12.60 956 0.00 Aldrifl

ISurvey method: Min Curvature 984 0.50 AId rift

1,016 0.00 Aldrin1,045 0.00 Aldrin1.190 0.00 AId rift1,232 0.00 Aid rift

I1.389 1.00 AId rift1,475 0.00 AId rift

II

Copyright IDS Pty Ltd. RblofB report Mar 16th 1998.1 Page Number: 3

I

Please find attached the Daily Drilling summary report for 25ln April 1998.


PAG

o Please Recycle


From: Gordon Hunter

Pages:


cc:

o Please Reply

--,

It~tg ~~. _Ii

PREMIER OIL GEELONG

D Please Comment

12135272212158

o PorReview



Boral Energy Resources. Attn: A Guthrie. Ross Naumann


Mineral Resources Tasmania, Attn: Carol8acon


oComments:

Fax:

Re:

Phone:

o Urgent

To:

Premier Oil Au:otralaslaGeelong Operations BasePhone: 0352722101Fax: 0352722058

Regards

C.&~Gordon Hunter

I 25/04/1998 12: 47

.1II

: FaxIIeIIIIIIeIIIIIII


.1Premier OilLanag~mentReport: Issue date 26.04.98IReport Distribution Lis111 ',;:<~'.:>?:;}{:( i;;·:;~;;N.A~;~~"E,;'1;~:ii;?1 ~;i+:>jti7;:::i;;,:~;:~~(;,t;~6.:0A t!~N;;1;;l~(~i:' ·:;::L:;iifT~;E~:.:tJQ·A~g~!:!'!;h~

IAhmed Nadji Minerals & Petroleum I 0394125152Andrew Adams Cue Energy Resource: 0396297318Angus Guthrie Boral Energy ResourcE 0862231851Carol Bacon Mineral Resource Tasl 0362338338

I Neil Tupper Santos Ltd. 0882247765, Ross Naumann Boral 0733697840

I WELL: Yolla-2 REP. NUMBER: 22 REP. DATE: 25.04.98


IDRILLING CO.:

~TH (m):

Northern Offshore

1,431.00 PROGRESS (m)84.00 DAYS FROM SPUD :16.1~

HOLE SIZE ("): 12..< 5

DAYS +/- CURVE:

MUD COST FOR TODAY: $8.744 CUMULATIVE MUD COST TO DATE: 571,352

V1SCOSl1'Y( sec / qt ); 56 API FLUID LOSS CI. (ppm): 39,000 SOLIDS (%vol) : 3.5PV (cps); 17 (cm3/30min) 6 K. (ppm): 26250 H20 (%vol); 34.0YP (lb/1 OOsq.ft): 38 API FILTER CAKE

HARD/Ca (ppm) : 200 OIL (%vol); 0Fl (32nds inch 1

22:30 GE.L 10s/10m130m HTHP FLUID LOSS MBT (ppb eCll : 6.5 SAND; 0

1.12 (lb/100sqft) ; 10 13 0 (cm3f.30min) 0 PM: .3 PH: 9.5

45 FANN 316/100 10 13 35 HTHP FILTER CAKE PF; .4 PHPA: 0.0(32nds Inch) 0

124 hr SUMMARY: Drill 12 1/4" hole· Cire - wiper trip to shoe - RIH - drill 12 1/4" hole.

STATUS AT 0600: Drilling 121/4" hole; depth @ 06:00hrs -1481m.

Drill 12 1/4" hole.I PLANNED OP :

COST DATA

I~DA:::\::::LY==:=======$=15=6=,5=8=8~~==C=U=M=:$=6=,3=O=31=86=7=:::::A=F=E=:$=1=O=,1=08=,2=O=5==D=IF=F=.=A=F=E-=C=U=M=:=$3=,8=0=4=,3=3j8~Mud Properties

,I Type:KCIFROM;TIME;

I WEIGHT (ppg):TEMP (C):

234234161161

Calculated over the bit un

CUM.METERAGE (m) 569CUM. ON BOi. HRS : 29.1CUM. lADe DRILL HR$; 61.5CUM.TOT. REVS: 28 .207Rap (mlhr): 9.3

Drilled over the last 24 hrs

METEAAGE (m) ; 84

ON BOTTOM HRS ; 11.8

IADC DRilL. HRS ; 18.0TOTAL REVS: 115.697ROP (mlhr): 4.7

NOZZLES3 X122 X14

X

X

X

:3

163

620

2.727

1

22

AVE WOB (k·lbs) :AVE RPM:

FLOW (gpm) :PUMP PRESS. (psi):HSI (hp/sqi) :

IADC# MI,_t Data for Bit # 3

, SIZE (") : 12.25MANUFACTURER: HU

I, TYPE: AG526

SeRIAL # ; 1402214

DEPTH IN (m RT) : 862I DEPTH OUT (m RT) :

BHA # 5 Length (tt) :198.4D.C. (1) ANN. VELOCITY (mpm);

HRS ON JARS; STRING VfT(k·lbs) ; 201 I TRQE MAX (ft·lbs): 16.000 I D.C. (2) ANN VELOCITY (mpm);

I,wr SLW JAR(k·lbs}; 38 PICK UP WT(k-lbs) : 190 TRQE ON (ft·lbs); 2.800 HW.D.P. ANN VELOCITY (mpm):BHA VV'T(k·lbs) : 56 SlK OFF VIiT(k-lbs) ; 195 TRQE OFF (ft-Ibs): 1.300 D.P. ANN VELOCITY (mpm) :

BHA DESCRIPTION ; l---:r:::O:-:O::-L-::D-::E':'SC=R=:I:=pT=I-=O:-:N--.-H....R'::"S-r--::S~E-R-IA-L-#---r----C-O-M-M-EN-r---+----, I

I 12 1/4"POC bil-12J14"NB Slab c/Wfloat·8"Anderdrift. 8"Pony NMDC. 12 1/4" Slab _TOlCO 12 1/4"PDC AG526 bit 61.5 1402214 8i1#3· HTC refurbished. Gaus edring. 8"NMDC - 12 1/4"Stab. 6xB"DC - Jar _ as 1/16" UG:3xS"DC • ~Q • , x HWDP _ dart sub - 8 X HWDP. 8" Hydra Jar 96.6 2872 Weir Houston-Used in 17 1/2"

section.

I Andardrift SUrlley tool 101.6 ADT811 Used in 36" &17 112" section

'--------------------I--JII

24 hr SUMMARY: Drilled 12 1/4" hole through primarily claystone from 908 - 1347m.

STATUS AT 0600: Drilling 121/4" hole; depth @ 06:00hrs - 1381m.

Premier OilManagement Report : Issue date 25.04.98

f\::'/nr:~/':?\.::;:~}:::iU::;:~~~~E!:+,;,':",:,;1 !.;!':;';:'i/.···.} ':":j;T ··::jJ:;;~·¢~mr~N~::?/:; :' •. 1<.'·;:';'; :::.·i.. :;F~':N:Q:;;:\C:~':":!'.Ahmed Nadji Minerals & Petroleum I 0394125152Andrew Adams Cue Energy Resource~ 0396297318Angus Guthrie Boral Energy ResourcE 0882231851Carol8acon Mineral Resource Tasl 0362338338Neil Tupper Santos Ltd. 0882247765Ross Naumann 80ral 0733697840

PAG


DAYS +/- CURVE:

DIFF. AFE·CUM $3,960,~26

REP. DATE : 24.04.9~

DAYS FROM SPUD :15.1~

AFE : $ 10,108.205

PREMIER OIL GEELONG


REP. NUMBER :21

CUM :$6,147,279

PROGRESS (m) 439.00

0352722058

Drill 12 1/4" hole.

$173.691

Northern Offshore

1,347.00DEPTH (m):

DRILLING CO.:

PLANNED OP:


125/04/1998 11:27

I.1IIII WELL: Yolla-2

III COST DATA

DAILY

I Copyright IDS, Nov 1997

III_IIIIIII

Please find attached the Daily Drilling report and Geological report for 23rd April 1998.


Premier Oil Australasia(?;eelcng Operaticns Base'Phone; 0352722101Fax: 0352722058

fl

o Please Recycle

~.



From: Gordon Hunter

Pages:

cc:

'-\~G:A &(1)~IL.LJ N \:j-.. ,. -, r





·Comments:

Re:

o Urgent

Phone:

Fax:

To:

Regards

G&~'Gordon Hunter

Fax:

IIIIIIIIeIII,I

II-III

IIII190!10 3Si\;td SiNDl33Si lID ~3IW3~d 8Si0GGLGSiE0


Summary of period 00:00 to 24:00 hrs: Formation Tops· This report :mly

RIH - Tag cement @ 818.5m - drill cmt - drill F/ColIar, shoe track, & shoe - II ~O~MATION ITop mBRT) Idrill 3m new formation to 865m - perform FIT - drill 12 1/14" hole.

5177,764$5973,588

$10 108,205

P&A

Page Numb r; 1

DAILY COST S ;CUM COSTS:AFE COSTS;

AFE BASIS:

12.2513,38

8530.00

DAILY DRILLING REPORT II 20

Yc)lIa-2

CUR. HOLE SIZE ("):CSGOD ("):

SHOE TVD (m RT):

LEAK·OFF EMW(ppg)

908.0

46.014.13

CURRENT OFl @ 0600: Drilling 12 1/4" hole; depth @06:00hrs - 908m.

FlLANNED OP. : Drill 12 1/4" hole.

T.D. (m RT):

PROGRESS (m):

DAYS FROM SPUD:

DAYS +/- CURVE:

Australia

Bass BasinNorthern Offshore

Northern Explorer III

Dowell I-----------'-----------J.-------+---I12.581,594.0


MUDCO;

RT ABOVE MSL (m) :

WATER DEPTH @MSL (m) :RT TO SEABm (m) :

00:00 03:45 3.75 862 MU 1 stand S135 DP & racked in derrick. RIH wI BHA #5, singling in hole tc790m. Drifted & flushed through all tubulars. No evidence of cmt plug or cementrings observed while RIH.

03:45 04:00 .25 862 Conducted kick drill, simulating active pit gain while RIH. 3min needed to st:ib ingrey vlv, close vlv, space out, and simulate annular closing.

04:00 04:30 .50 862 MU TDS, & washed from 780· 818.5m, wi 0 WOB, Orpm, 850gpm,8o 2350psi.Tagged pluglTOC @ 818.5m, wI 3klbs WOB. Picked up, 8< featheredbottom/worked junk 15min wI 0-2klbs WOB, 80rpm, 850gpm, 2380psi, 8< 0-2k ftIbs torque.

04:30 06:00 1.50 862 Drill pluglhard cmt 818.5 - 820m,w/0-1 Oklbs WOB, 80-100rpm, 850gpm.2400psi, & 1.5-5k ft-Ibs torque. ROP's 0-4m/hr. Increase in torque noted @820m, together wI emt plug plastic at shakers. Pump 35bbl HiVis sweep. Nc junkobserved.

06:00 08:30 2.50 862 Drill pluglhard cmt 820- 826m ,w/O-10klbs WOB, 80·100rpm, 850gpm, 240( psi.& 1.5-5k ft-Ibs torque. Observed torque change at 826,3m, top to FIe (theo eticaltop @ 825.9m). Instantaneous ROP's 0-1m/hr.

08:30 11 :00 2.50 862 Drilled F/Collar 826.3 -827m, & shoe track to 835m. Observed high torque cs NBstab passed through F/C. Worked FIC wI NB stab. High torque wI TDS stal ingwhen btm String Stab @ F/C-suspect stab hanging up @ F/C.

11 :00 14:00 3.00 862 Unable to progress past 836m due to TDS stalling-BHA spaceput indicatesbitlNB Stab below FIC, but lower string stab hanging up on FIC, possibly due tobit 1/16" UG. Vary WOB, rpm to minimize stalling, but minimal progressobserved.

14:00 15:30 1.50 862 Cont attempts to drill F/C. Made repeated passes through FIC wI bit & NB ~ tab,but immediate TDS stalling as soon as String Stab attempted to pass. Onlyprogress gained when able to position Stab on FIC & drill wI btm of stab blade.

15:30 16:30 1.00 862 Broke lower Stab through FIC to 837m. Reamed FIC area, and drilled shoe trackfrom 837-852m, w/3-1 Oklbs WOB, 80-100rpm, 850gpm, 2380psi, & 1.5-5k -Ibstorque. Pumped HiVis sweep to clean hole of remaining cmt, plug, etc.

16:30 17:30 1.00 862 Tagged shoe @ 853m, and drilled with parameters ala. PU andbackreamed/reamed through FIC, shoe track, & shoe until minimum torqueobserved « 4k ft-Ibs). Pumped 35bbl HiVis sweep to clean hole.

17:30 18:00 .50 865 Cleaned out rathole, and drilled 3m of new formation to 865m, wi 0-2klbs V\ OB,90rpm, 850gpm, 2400psi, & 2-4k ft·lbs torque, while pumping 50bbl HiVissweep, followed immediately wI displacement of 1.1sg KCI/PHPA mud.

18:00 20:00 2.00 865 Displaced 17.5ppb KCI mud wI PHPA polymer into hole, w/600gpm, slow s ringrotation, & pipe reciprocation for cleaned interface. eirc 30min after KCI ret rnsobserved @ shakers to shear polymers 8< balance MW (1.07sg in system).

20:00 21 :00 1.00 865 Pulled back to shoe @ 853m. RU Dowell cement unit. P/tested lines to 20C Opsifor 20min - okay. Performed F.I.T. w/1.07sg mud to 830psi surpface·no lea off.EMW =1,75sg. RID Dowell.

21 :00 21 :30 ,50 865 P/U Emergency Hang-off tool from derrick, and made up toolldbl pin to prol ertorque. Racked back in derrick. Held tool box talk on operation of tool to rig rew.

Copyright IDS Pty ltd, RbtofB report Mar 16th 1998.1


IIIIIIIIIII,IIIIIIIII19121 /Gia 3Si\;;'d SiNDl33Si lID ~3IW3~d 8SlaGGLGSEia E1:G1 8551/pla/PG

I'Jo-4,o .... r~

Premier Oil\\\"1r\

I DAILY DRILLING REPORT ~ 20

Report Date: Yc)lIa-223.04.98

I FROM TO HRS DEPTH ACTIVITY DEseRI PTION

21:30 22:00 .50 865 Flushed choke & kill lines wi mud. Took SCR's on both pumps @ 30, 40, &

I50spm. Pumped through C & K lines to establish pressure losses. Filled oul kicksheets.

22:00 24:00 2.00 908 Drill 12 1/4" hole 865 - 90am, wi 0-2klbs WOB, 80-200rpm(to 200rpm whenStabs out of shoe), 850-800gpm. 2350psi, & 2-10k ft-Ibs torque. Reduce flo Nrate

I to aOOgpm for shaker losses. String stalling due to poor compensator/lrg PC Ccutters.


I FROM TO HRS DEPTH ACTIVITY DESCRIPTION

00:00 06:00 6.00 1,028 DriIl908-1028m, w/ 0-4klbs WOB, 200rpm, 800gpm. 2350psi, 2-10k ft-Ibs

Itorque. ROPs 10-50m/hrthrough clystn. Survey every std (O-O.5deg). Conterratic ROPs/torque due to difficutly unreeling weight through compensator


I REMARK / OBSERVATION SOLUTION / RECOMMENDATION

Held kick drill with drill crew while RIH; crew were Cant with drills to further acquaint those of crew w thinformed beforehand, but knew the procedures, proper limited or no offshore experience with the correct

Itool, and performed well. procedures.Jumped ROV to conduct check of PGB & bulls-eyes;observed bulls-eyes having changed, from having read3/4deg forward before the 13 3/8" casing cementation to

I 3/4deg port presently.

Mud Properties MUD COST FOR TODAY: $4.008 CUMULATIVE MUD COST TO DATE: S44.922

Type: VISCOSllY( sec 1ql): 56 API FLUID LOSS CI· (ppm): 32,000 SOLIDS (%vol) : 1.7

,I PV (cps): 11 (cm3130min) 8 K+ (ppm): 0 H20 (%1101): 96,0KCI API FILTER CAKEFROM: Pit YP (lb/100sq.ft): 22 (32nds inch 1 HARD/Ca (ppm) : 100 OIL (%\101): °TIME: 22:00 GEL 1Os/1 Om130m HTHP FLUID LOSS MBT (ppb eq) : 0.0 SAND:

I WEIGHT (ppg): 1.07 (lbl1 ODsqfl) : 8 10 0 (cm3130min) 0 PM: .7 PH: 9.5

TEMP (C): 16 FANN 316/100 10 13 0 HTHP FILTER CAKE PF: .4 PHPA: 0.0(32nds inch) 0

Bit Data for Bit # 3 IADC# M 2 2 1 Wear ~~f:gE9~~~::gI SIZE("}: 12.25 NOZZLES Drilled oller the last 24 hrs Calculated over the it run

MANUFACTURER: HU AVE WOB (k-Ibs): 1 3 x12 MeTERAGE (m) ; 46 CUM.METERAGE (m) 46TYpe: AG526 AVE RPM : 200 2 x14 ON BOTTOM HRS : 1.7 CUM. ON BOT. HRS : 1.7SERIAL #: 1402214 FLOW (gpm): 800 X IADC DRILL. HRS ; 1,7 CUM.IADC DRILL HR 1.7DEPTH IN (m RT) : 862 PUMP PRESS. (psi): 2,150 x TOTAL REVS : 19.800 CUM.TOT. REVS: 19,800DEPTH OUT (m RT) : HSI (hp/sqi) : 1 x ROP (mlhr): 27.9 ROP (mlhr): 27.9

I BHA#S Length (tt) :198.4 D.C. (1) ANN, VELOCITI (mpm); 228HRS ON JARS: I STRING WT(I<-Ibs) : 174 I TRQE MAX (ft-Ibs): 11,000 I D.C. (2) ANN VELOCITY (mpm): 226

I wr BLW JAR(k-lbs): 38 PICK UP WT(k·lbs) : 176 TRQE ON (ft·lbs): 1,550 H.w.D.P, ANN VELOCITY (mpm) 157BHA VIfT(k-lbs) : 56 SLK OFF WT(k.lbs) : 172 TRQE OFF (ft·lbs): 1,100 D.P. ANN VELOCllY (mpm) ; 157


I12 1I4"PDC bit ·12/14"NB Stab c/W float- 19.5 1402214 Bil#3 - HTC refurbished, Gauged8"Anderdrift· 8"Pony NMDC - 12 1/4" Slab - Telco as 1/16" UGring - 8"NMDC· 12 1/4"Stab - 6xS"DC - Jar- 48.6 2872 Weir Houston3x8"DC • xlo - 1 x HWDP - dart sub· 8 X HWDP, 53.6 ADT 811 Also used in 36" & 17 1/2" ections

I8" Anderdrift Tool8" Hydra Jar 48.6 2872 Used in 17 112" section.12 1I4"PDCAG526 bit 19,5 1402214Anderdrift Survey tool 53.6 ADT811 Used in 36" & 17 1/2" seC1 Ion

II Copyright IDS Pty Ltd. RbtofB report Mar 16th 1998.1 Page Numb r: 2

I 913/E13 39\;;,d 9NOl339 lID C:l3IH3C:ld 8S13;:;;:;LGSE13 E1 :;:;1 855 1/t>13/t>;:;

II Premier Oil DAILY DRILLING REPORT # 20

Report Date: 23.04.98 y()lIa-2

I Anchor Tension A1 : 45.0 A2: 50.0 A3: 200.0 A4: A5: 85.0(kips) A6: 80.0 A7: 75.0 AS; 80.0 A9: A10:

I Workboats Location. Fuel Barite D/wtr P/wtr Cmt Bent Heli Weather & Rig data @ 24:00 hrs(kllr) (sx) (bbl) (bbl) (sx) (sx) (kllr) VOL (k.ips:

M. Raider Geelon WIND SP. (kts): 7.0 VISIB.(nm) : 12 RIS.TENS:Edwar J. Faimie at rig WIND DIR (d8g) : 0 CEILING (m) : 1,300 HEAVE(m:

I PRES.(mbars): 1021 WAVES (m): .5 ROLL (deg :AIR TEMP (C): 13.8 SWELL (m): .7 PITCH (de~) :

ICOMMENTS: All anchors piggied: balanced aft anchors. Tension meters on #3 &#4 winches still broken, Ree, 1 chopper: 12 PAX on o rig,

I13 off. New standby boat at rig.

Bulk Stocks Used /11'1 Slocl< Used /11'1 Stock Used /11'1 Slack Used /11'1 St ckDRILL WATER (bb!) :629 2,761 FUEL (bbl): 13 1.380 GEL (sx): 0 551 HELl-FUEL (kllr) : 0.3 1 .0

I POT WATER (bb!); a 1,736 BARITE (5X) : 0 7,209 CEMENT (sx) : a 5.842

Drills, Permits & lnspection~

I DRILL TYi='E DATE INSPECTIONS DATE SAFETY DETAILS

TRIP DRILL aOPTEST 22/4/98 LTIFIRE 20/4/98 NEXT TEST DUE DATE MTI 17/4/98PIT DRILL 23/4/98 RIG INSPECTION 17/4/98 JSA ongoing

I INCIDENT DAYS SINCE LTA 113 #PTW ongoingSafety Meeting 20/4/98

CasinQ Pump Data

I CSG LOT PHASE CSG SHOE CSG SHOE F1umo Data - last 24 hI'S Slow Pumn Da00(") MD ND (mBRT) # TYPE LNR SPM EFF Flow SPP SPM SPP DEPTH MW

13.3/8 " 853 853 (") ("/0) (gpm (psi) (psi) (m RT) (ppg)

Nat. 12·P· 6.50 97 800 2150 30 225 86 8.9

I1 BO

TYPE LNGTH CSG WT GRD THREAD 2 Nat. 12-P· 6.50 BO 97 40 300 86 8.9(m) ID (") Ibslft 50 325 86 B.9

Shoejl 14,9 12.4 68.0 LSO N.VAM 30 225 86 B.9

1 xjt 11,5 1:2.4 68.0 L80 NVAM 40 300 86 8.9

I F/Collar Jl 12,3 12.4 6S.0 LSO N.VAM 50 375 86 B.9

62 xjts 713.4 12,4 68.0 L80 N.VAM1 xpup"A" 3.1 1:2,4 68.0 LSO NVAM Personnel: on Site =84WHjt 5.5 12,4 68.0 LSO NVAM

IJOB TITLE NAME COMPANY NAME #

Drlg Supervisor Knobl Northem 613N/S DrJg Sup. Dubravac Cement 2

Asiatic ROV 3

-- Geologist Frankiewicz Mud 1Northern Explorer P Cox &Milroy GeoServices <1

Olher 3Premier :3

I Survey MD TVD INCL AZ. CORR. 'V DOGLEG N/S ENJ TOC L TYPE

Last Tool Type: AJdrift (mRT) (m RT) DEG (deg) !'Z. SECT (m/30m) (m) (m)(deg) (m)

I Magnetic Declination : 12.60 707 0.00 A1drift

Survey method: Min Curvature 737 0.00 A1drirt765 0.00 A1drilt798 0.00 Aldrilt

I 822 0.00 A1drilt837 0.00 Aldrift855 0.00 Ald(Ft864 0.00 Aidrift

III Copyright IDS pty Ltd. RbtofB report Mar 16tn 1998.1 Page Numb r: 3

190 / P0 3Si'v'd SiNDl33Si lID ~3IW3~d 8S02:2:LGSE0 E1 :2:1 855 /P0/P2:

I

GEOLOGICAL MORNING REPORT

PREMIF.R Oll. (AllSTR;\LASli\) LlMlTED

VOttA 1

- .. _ __. .__., ..__ .__. __.. . '__' ". ,.__.....__...0-

12. COMMENTS;-,. --..' .' --_. -_..__ . .-Drm~d out of the ca~ing shoe to 865 meters where we performed FIT to 1.7~ S.C. Orilling ahead frl)m 86~

metres.

1. RF.PORT ~O : 10z. DATE ; 23/04/98

2._.D"-VS ~I~CF. SloUL ._'_ 14.13__.-- ,_..- _. -- -- -_... - ._.

4. I\IIIlNIGHT DI::a>Tll : 908 m

5. 0600 D"~PTU : 1028 III

~,_O~~OTO 0600 :vIF.TlU.t\GE ~ 16601__.. -- -- -- -- _ ..- - - _.

,...7~__f~ESE~T LIT~'()I,Qf;Y _:_ . Claystone "!'.It interbedded Lirne!ttonr- !'tringer"_._ .._-.._- -

..~ .. F:ORMATlON_; ..Tonl~.aygr.o~--. -- -- -- --.----

r-2.:- _ PRl:$F.NT ()PERATJ()~ _:_ .....!!!!lIi.ng lthe.ad• -- -- -- -- '-- -- -

~~p~:~SPEA~;u) __" --T'(PPM) --- .-- --. -- -- '- .- ._-

LiF.~T~L.--1'O·.~ .~,. ...-9.... _I--. CJ 1(:4_. NC4 __. .JL_862.908 .1 6 'Yo. 1098

-,--

-_...._ ..-_..

Actual

--_.. -_ .. "---" --- --_. -- .._-

,1---.. .. -_.. i -- •..__.- .... - ..

J.!~ ..... PRO:"'(~I()l':\L. F'ORMA'!.:19N TOPS_:-- ---Formation Prognosed

Anl':ahook I094.5m

IIIIIIII.IIIIItIIIIII190/S0 3~'v'd ~NDl33~ lID ~3IW3~d 8S0GGLGSE0 El:Gl 855 /~0/~G

I

~ L- __ .__. __..__ -- .._- i __ --l .---l ---1.- .~. \14. GF.OLOClST: K. FRANKIEWICZ ]

L...- -- •__..__..._- -_. -- ._-' -- '-- '-- ,._- --,- -

GEOLOGICAl. MORNING REPORT

13. LITHOLOGIES : 1DEPTH DESCRIPTION & SHOWS GAS ROP

U!.r~t~~ __._.,-,---_._-~, ._-I-- _,_ , ..__ ,,_.._~, ._- - Min M••.{ Avg ...M!n_..M"!- A.~lL

862 _910 CLA\"~"O!'lf.: (80-100'%) It gy-vlt gy. sft-fnn..1 .16. _I 9.9 96.7 ~7.9amorp ifp. hlky·~bblk)'. grade~ (0 I<:ALCIUiTITf. iJp, calc, com mica flake$, lr blk I I

carb S(lk..'i flam, tr roram~. II' bry, tr ryr nod~.

LlMFSTOI'f.: rrl"-20"1..) offwh-pl yd ore. pia!'.slky. mod - ~. cillt. sl dol, tr cyptJ:ln, tr mcd brn-blk oxidi1.ed Fe, tr nautilu~, shell frllgs. coral.

IIIIIIIIIIIIIiiIIIIII

913/913 39to'd 9NDl339 lID ~3IW3~d 8S!3GGLGSE!3

Please find attached the Daily Drilling summary report for 23rd April 1998.


PAG 01/02

lk

,~.

l..-""""

o Please Rec;ycle

~ .'-."';, .,


cc:


Pages:

From: Gordon Hunter

o Please Reply

PREMIER OIL GEELONG

D Please Comment

0352722058

o For Review



Cue Resources, Attrl: Andrew Adams




o Urgent

·Comments:

Re:

Phone:

Fax:

To:

Premier Oil AustralasiaGeelong Operations BasePnone:0352722101Fax: 0352722058

Regards

CSJl~Gordon Hunter

II 24/04/1998 11:24

III

-FaxIIIeIIIII,-IIIIIII


HOLE SIZE ("): 1;: .25

DAYS +/- CURVE:

DIFF. AFE-CUM :$4,134,617

REP. DATE: 23.04.98

DAYS FROM SPUD ~4.1:

AFE: $10,108,205


REP. NUMBER: 20

CUM: $5,973,588

PROGRESS (m) 46.00

$177,764

Drill 12 1/4" hole.

908.00PTH (m):

DRILLING CO.:

PLANNED OP:

I Premier OilI Management Report: Issue date 24.04.98

Report Distribution Lis1IC;I;:::i::,:.,,::i!':<;::i:N~ME';.i:,< i'. .1: ·'Loc~tION " ....•...• i.FAXNQ<',<:

Ahmed Nadji Minerals & Petroleum I 0394125152Andrew Adams Cue Energy Resource: 0396297318

I Angus Guthrie Boral Energy Resourcf 0882231851Carol Bacon Mineral Resource TaSl 0362338338Neil Tupper Santos Ltd. 0882247765

I Ross Naumann Boral 0733697840

.-=============================~--~-

I WELL: Yolla-2

Northern Offshore

I24 hr SUMMARY: RIH - Tag cement @ 818.5m - drill cmt· drill F/Collar, shoe track. & shoe - drill 3m newI STATUS AT 0600: Drilling 12 1/4" hole; depth @ 06:00hrs - 908m.

I COST DATADAILY:

I Copyright IDS. Nov 1997

II,-IIIIIII

Please find attached the Daily Drilling summary report for 22l"1d Apri11998.



PAG 01/02

IJ

o Please Reeycle


From: Gordon Hunter


cc:

Pages:

_~,.,~ __ V····I

o Please Reply

PREMIER OIL GEELONG

o Please Comment

0352722058

o For Review



Santos Ltd,. Attn: Neil Tupper



Re:

-Comments:

Fax:

Phone:

o Urgent

To:

Premier Oil AustralasiaGeelong Operations BasePhone: 035272210'Fax: 0352722058

Regards

C<.J(~Gordon Hunter

Fax

I, 23/~4/1998 lEI: 14

IIIIIIIeIIIII,_IIIIIII

24 hr SUMMARY: Tested BOP(on blue pod) • function test yellow pod· set wear bushing - MU 9 5/8" esg x/over·

STATUS AT 0600: Drilling cement @ 820m..

RIH 12 1/4" BHA & 5" DP singles. Drill cmt &shoe, Displace to KCI mud. Drill 3m new hole.

7.50

PAG~ 02/02

HOLE SIZE (") :

DAYS +/- CURVE:

DIFF. AFE-CUM :$4,164,8~7

REP. DATE: 22.04.98

DAYS FROM SPUD :13.1~

AFE: 510,108,205

PREMIER OIL GEELONG


REP. NUMBER: 19

Issue date 23.04.98

CUM :55,943,358

Minerals & Petroleum' 0394125152Cue Energy Resource: 0396297318Boral Energy ResourCI 0882231851Mineral Resource Tasl 0362338338Santos Ltd. 0882247765Boral 0733697840

PROGRESS (m) :

0352722058

5148,113

862.00


DEPTH (m):

WELL: Yolla-2

PLANNED OP:




I 23/~4/1998 10:14

IIIII:1III COST DATA

DAILY:

I Copyright IDS. Nov 1997

III_IIIIII

Premier OilManagement Report : Issue date 22/04/98


Minerals & Petroleum 0394125152Cue Energy Resource 0396297318Boral Energy Resourc 0882231851Mineral Resources Ta 0362338338Santos 0882247765Boral 0733697840

REP. NUMBER: 18 REP. DATE: 21/04/98


DEPTH (m): 862.00 PROGRESS (m) :


DAYS FROM SPUD j2.1

HOLE SIZE (") : 7.50

24 hr SUMMARY: Run BOP & riser - landed & latched· took SOK o/pull - stroke out Slip Jt & installed Divert r

TATUS AT 0600: Running wear bushing. Prepare to MU 5" OP.

Test csg/BOPs. Run wear sleeve. RIH 12 1/4" BHA. Drill cmt & shoe. Displace to KCI mud.

CUM: $5,579,752 AFE: $10,108,205 DIFF. AFE·CUM $4,528, 53

~S9~12£6 9 ~9+ lIO ~3I 3~d


Please find attached the Daily Drilling summary report for 19111 April 1998.


Victoria Minerals & Petroleum OPS, Attn: Ahmed Nadji

o Please Recycle



CC:

From: Gordon Hunter

Pages:

. ,.




Boral Energy Resources, Attn: A. Guthrie. Ross Naumann



Fax:

-Comments:

Re:

Phone:

o Urgent

To:

Premier Oil AustralasiaGeelong Operations BasePhone:03527~2101

Fax: 0352722058

Regards

G,~~Gordon Hunter

Fax

IIIIIII

IIIIIII-IIIIIII

0352722058 PREMIER OIL GEELONG PAGC 02/02


24 hr SUMMARY: Set anchors - move rig off location - work on BOPs - MU Ball jt - MU 1st Riser jt - ?fTest 1st

STATUS AT 0600: W.O.W.

:: : ,.: .. ·:"':·::"·"':'·:;:·',·::iI.:IA'·'M":'~:::::'·; '':'' ,.' .' .,., ... :', :.: ,.,· ..',"',:··,·O·".,.,'.·.C."'.A:.. ·T..·:IO·.·.~.:." ' .• ,..... :... '. ,'" 'F;"..·~·V.·,·.",;'N·."'-".••'.·.·'·"::':.'"..• ·::." ...'..'...'~",;.,;,·:1:.•,:••:.,:"••",.'•••:': : :., .. ',.,'... ·.::., .. ;,;~, ...... :,F:,.·,.,·: '.. : L;; :"'." ""'" ~

Ahmed Nadji Minerals & Petroleum I 0394125152Andrew Adams Cue Energy Resource: 0396297318Angus Guthrie Boral Energy Resourci 0882231851Carol Bacon Mineral Resource Tasl 0362338338Neil Tupper Santos Ltd. 0882247765Ross Naumann Boral 0733697840

WELL: Yolla-2


DIFF. AFE-CUM $4,675.~87

REP. DATE: 19.04.98

DAYS FROM SPUD ~0.1~ DAYS +/- CURVE:

AFE ; $10,108,205


REP. NUMBER: 16

CUM :$5,432,218

PROGRESS (m) :862.00

Run BOPs & Riser.

$167,939

Northern Offshore

EPTH (m):

DRILLING CO.:

COST DATADAILY:

PLANNED OP:

IIIIIIII Copyright IDS, Nov 1997 .

II.-IIIIII

I 191.134/1998 11: 38 133527221358 PREMIER OIL GEELONG PAG 131/132

Please find attached the Daily Drilling summary report for 181to April 1998.

Gordon Hunter

o Please Recycle

cc:

Pages:

From: Gordon Hunter










Re:

Fax:


o Urgent

Phone:

•Comments:

To:

Premier Oil AustralasiaGeelong Operations BasePhone: 0352722101Fax:0352722CSS

Regards

G,\j~~t~

Fax



Premier OilManagement Report: Issue date 19.04.98Report Distribution Lis1

Ahmed Nadji Minerals & Petroleum I 0394125152Andrew Adams Cue Energy Resource: 0396297318Angus Guthrie Boral Energy Resourcl 0882231851Carol Bacon Mineral Resource TaSI 0362338338Neil Tupper Santos Ltd. 0882247765Ross Naumann Boral 0733697840

WELL: Yolla-2 REP. NUMBER: 15 REP. DATE: 18.04.9S


DEPTH (m): 862.00 PROGRESS (m):


DAYS FROM SPUD 9.13

HOLE SIZE ("): ~ 7.50

DAYS +/- CURVE:

24 hr SUMMARY: Jetted PGB clean· work anchors with new Stevpris anchors (in meantime, prepared equi &

STATUS AT 0600: Run BOPs.

PLANNED OP:

COST DATADAILY:

Run BOPs & Riser.

CUM :$5,264,280 AFE : $10,108,205 DIFF. AFE-CUM :$4,843,~25

Please find attached the Daily Drilling summary report for 17;-' April 1998.


Premier Oil AustralasiaGeelong Operations BasePhone; 0352722101Fax: 0352722058

Regards

C·~~~Gordon Hunter

PAG 01/02

, I

o Please Recycle

. -I

\. \~k.kA ~ ~1J...Li I'\{ ~


cc;

Pages:


From: Gordon Hunter

o Plea.. Reply

PREMIER OIL GEELONG

o Please Comment

0352722058

D For Review





Boral Energy Resources I Attn: A. Guthrie, Ross Naumann


•Comments:

Re:

Fax:

Phone:

o Urgent

To:

Fax

I 18/04/1998 14: 12

IIIIIIIeIIIII,-IIIIIII

24 hr SUMMARY: Run 13 3/S"csg . cement csg - pull running string - jetwellhead - test pull anchors & re-se as

STATUS AT 0600: Working anchors.


,<:{ .<~\Fi;::<:;·::+ft.I~.$i: .. '... :': ...•. ,: .i:i :.;,:·..···:.:'L:QCATION!·:.·· ...• Ii.: .: .• ··;,F~·~:tfl~;;~;;)\/X

Ahmed Nadji Minerals & Petroleum I 0394125152Andrew Adams Cue Energy Resource: 0396297318Angus Guthrie Boral Energy ResourCE 0882231851Carol Bacon Mineral Resource Tasl 0362338338Neil Tupper Santos Ltd. 0882247765Ross Naumann Boral 0733697840

Finish working anchors. Uout 171/2" tools. MU 12 1/4" BHA MU 5" DP. Run BOP's

02/02PAG


DAYS +/- CURVE:

DIFF. AFE·CUM :$5,045, ~02

REP. DATE : 17.04.9~

DAYS FROM SPUD 8.13

AFE: $10,108,205

PREMIER OIL GEELONG


REP. NUMBER: 14

CUM : $5,062,903

PROGRESS (m) :

0352722058

Northern Offshore

$251,642

862.00EPTH (m):

WELL: Yolla-2

DRILLING CO.:

COST DATADAILY

PLANNED OP:


I 18/24/1998 14: 12

IIIIIIIIII Copyright IDS, Nov 1997

II.eIIIIIII

Please find attached the Daily Drilling summary report for 16'" April 1998.


1i/04 '98 10:13 F.~ 0352i22058 01/02j~.

" r~',

\. \ ~R-{) V~Il\,\l\l~

o Please Recycle


ee:


Pages:

From: Gordon Hunter

PREMIER GEELONG ~~~ CAROL BACON

D Please Comment 0 Please Replyo For Review




Boral Energy Resources, Attn: A Guthrie. Ross Naumann



-Comments:

Re:

Phone:

o Urgent

To:

Premier Oil AustralasiaGeelong Operations BasePhone:O~52722'01

Fax: 0352722058

Regards

C·&~Gordon Hunter

Fax

IIIIIIIIIIIII•-IIIIIII

~~ 02/02


REP. DATE: 16.04.S 8

DAYS FROM SPUD 7.13 DAYS +1- CURVe:



REP. NUMBER: 13

PROGRESS (m)290.00862.00DEPTH (m):

DRILLING CO.: Northern Offshore

WELL: Yolla-2

1i/04 '98 10:13 FAX 0352i22058

Premier OilManagement Report: Issue date 17.04.98Report Distribution List;,,:-' ,,,":".'":::".'.'.',).. ,....: ',~:~., ~". "." '"" ,:; ',:',<1§5illtI::,~li,:I,.1:;:.:·;;~;'::'~'::I:.,:f,~':~¢1:>-;:' ,"Ahmed Nadji Minerals & Petroleum 1 0394125152Andrew Adams Cue Energy Resource: 0396297318Angus Guthrie Boral Energy ResourC( 0882231851Carol Bacon Mineral Resource Tasl 0362338338Neil Tupper Santos ltd. 0882247765Ross Naumann Boral 0733697840

IIIIIIIIe

24 hr SUMMARY: Drilled 17 1/2"hole to TD @ 862m. Displaced hole to 1.1459 hi-vis gel mud - dropped Er. s -I STATUS AT 0600: Run 13 3/8" csg. Depth @ 06:00hrs:: 62m

PLANNED OP : Finish running 133/8" csg. Cement casing. POOH. Function test BOPs.

IIII.-IIIIIII

COST DATADAllY:

CopyrighllDS. Nov 19.97

$170,525 CUM :$4,811,261 AFE: $10,108,205 DIFF. AFE·CUM $5,291,944

Please find attacJ'led the Daily Drilling summary report for 1Sl/'l April 1998.

Fax

Gordon Hunter

01/02 9

/

o Please Recycle


cc:

Pages:


Frvrn: Gordon Hunter

PREMIER GEE LONG ~~~ CAROL BACON

o Please Comment 0 Please Replyo FDrReview






VlCtona Minerals & Petroleum Ops, Attn: Ahmed Nadji

Re:


-Comments:

o Urgent

PhDne:

Fax:

To:

Premier Oil Austn!lasiaGeelong Operations BasePhone: 0352722101Fa:r:03S27220Sa

Regards

c<.~~.

16/04 '98 11:43 FAX 0352i22058IIIIIIIIeIIIIII_IIIIIII

24 hr SUMMARY: Wait on repairs to ROV • work anchors· jumped ROV - RIH with BHA - TDS repairs· drill Fod 17

STATUS AT 0600: Drilling to 17 1/2" TO at 862m. Depth @ 06:00hrs "" 741m.

.. :". .: :.',.·;ii\NE .' ,..:><:~:)j(bQA~,,~,:;::':i::,; -: ·;·,,,::~;:;':;f~.NQ:,L:;,:'~:,,,

Ahmed Nadji Minerals 8. Petroleum I 0394125152Andrew Adams Cue Energy Resource: 039629731 BAngus Guthrie Boral Energy ResourCI 0882231851Carol Bacon Mineral Resource Tasl 0362338338Neil Tupper Santos Ltd. 0882247765Ross Naumann Boral 0733697840

Drill to TO. Sweep hole wI HiVis. Displace hole to 1.14s9 HiVis. POOH. RU & run 13 3/8" c:sg

17 Yr' hole TD revised from 700m to 862m due to interbedded nature of"Mid Miocene"exp:rienced while drilling ,which may lead to washout an~ ledging prob.lems i~left expo~edduring 12 1!4" section. Casing setting depth will be approxlmatcly 850m 10 the 'Lower Mid

Miocene".

~~02/02


DAYS +1- CURVE:

DIFF. AFE-CUM :$5,437,447

REP. DATE: 15.04.9S

DAYS FROM SPUD 6.13

AFE: $10,078.184


RIG: Northern Explorer 111

REP. NUMBER: 12

Issue date 16.04.98

CUM :$4,640,737

PROGRESS (m) 131.00572.00

$188.990

Northern Offshore

NOTE:

16/04 '98 11: 4.3 FAX 0352i22058

DEPTH (m):

WELL: Yolla-2

DRILLING CO.:

COST DATADAILY:

PLANNEDOP:



II'IIIIIIIII Copyrignt IDS, Nov 1997

III_IIIIIII

Please fin~ attached the Daily Drilling summary report for 141h April 1996.

Fax

~ 01/02

- •.•..l

,- ....~

III

Iu-,. r--

.- ..... _...,,~!

;',' ... ~_:~ ~ ~ .,. ~;..' )<.;;~~>~.>; t

l':'E·~~A:~~~i\~G..... ---.--.i

l

,-;:: ~ -!•;!:~,,_.

1.•en" _~_;

D Please Recycle



From; Gordon Hunter

cc:

Pages:


CJ Please Comment 0 Please ReplyD ForRmew




Boral Energy Resources. Attn: A Guthrie, Ross Naumann



-Comments:

FlOC

Phone:

o Urgent

Re:

To;



Regards LEG·&1

Gordon Hunter

15/04 '98 12:52 FAX OJ52i22058IIIIIIIIeIIIIIf'IIIIIII



DRILLING CO.: Northem Offshore

~ 02102

HOLE SIZE (") : 7.50

REP. DATE: 14.04.98


REP. NUMBER: 11

Minerals &Petroleum' 0394125152Cue Energy Resource~ 0396297318Boral Energy Resouro 0882231851Mineral Resource Tasl 0362338338Santos Ltd. 0882247765Boral 0733697840

15/04 '98 12:52 FAX 0352i22058

WELL ~ Yolla-2


IIIIIII

DEPTH (m): 441.00 PROGRESS (m): DAYS FROM SPUD 5.13 DAYS -r/_ CURVE:

24 hr SUMMARY: W.O.W - worked cranes - worked boats - "Commander' re-set#5 anchor - mo....ed rig ove well

STATUS AT 0600: ROV camera u/s. Rigging up rig camera to be able to final position the rig & enter wellhead

PLANNED OP : RIH (jump ROV when repaired). Drill to TO at 850m. Wiper trip. RU & RIH w/13 3/8" csg.IIIIIi'IIIIIII

COST DATADAILY:

CopyrighllDS, Nov 1997

$161,288 CUM :$4,451,746 AFE: $10,078,164 DIFF. AFE-CUM :$5,626,' 38

101/02

o Please R8cyc1e

Pages:

cc:

From: Gorda'l Hunter

Premier Oil. Australasia

.~ .. \ ~\.J..A ~ ~U-\NS,


Cue Resot..I'CeS, Attn: Andrew Adams

Voila 2 Daily Drilli~ Reports


Bora! Erergy Resources, Attn: A Guthrie, Ross Naumann

Vidoria Minerals & Petroleum Ops, At1n: Ahmed Nadji

Mineral Resources Tasmania, Attn: Carol BaCDn

Please find attached the Daily Drilling summary report for 13171 April 1998.

Fmc

o Urgent 0 Far RevIew 0 Please Comment 0 Please Repfy

To:

Premier Oil AustnlasIaGeelang Openmons BasePhone: 0352722101Fu:0352722058

Date: ApnI14,1998-----------------------


RegB'CIs

G·0l~Gordon Hunter

14/04 '98 10:24 F.~\ OJ52722058

Fax

! I

IIIIIIIeIIIII•e

IIIIIII

l4i 02/02PREMIER GEELONG ~~~ CAROL BACON

LOCATION . . . FAX NO

Minerals & Petroleum 0394125152Cue Energy Resource 0396297318Boral Energy Resourc, 0882231851Mineral Resource Tas 0362338338Santos Ltd, 0882247765Boral 0733697840

. NAME ..

14/04 '98 10:24 FAX 0352722058



Premier OU--Management Report: Issue date 14.04.98

IIIIII

II ·::N(:~:I.la:2:=~;::REs~-(:)~~:;~N_U.:~:-:::~;~D~:: ...D:~:~l::~J1-;~O-e 24 hr SUMMARY: WOW

.. -_.._ - __-----_ ,,--_ _._._-----_ ..__ _.. ,,_.." _..-----_._---_ ,.,." "., , ..

STATUS AT 0600: wow. Seas stiltmarginal-tonmchcroperations. Prepare to re-position rig 'Oyer wellhea::I. --.

PLAN-NEO· OP : WOW; ·Jump ROV &check wellhead.· Re-Jay·anGhors 5 &6. Continue drilling..17 1/2'·' ·ho eIIIII,eIIIIIII

COST DATA' -DAllY· : $150,029...

Copyright IDS. Now 1997

CUM :$4,290,459- ... AFE·:-$10,078,18<il DIFF. AFE-CUM $5,-787726

D Please Recycle

Pages:


cC:

From: Gordon Hunts"


o For R8vIew 0 Pie... Comment 0 Please Reply

Voila 2 Daijy Drilling Reports

Santos ltd., Attn: Neil Tupper

Cue Resources, Attn; Andrew·Adams··· .

Boral Energy Resources I Attn: A Guthrie, Ross Naumann

Mineral ResQm:es Tasmania, AttrT. .Carol-Bacon ....

Vidoria Minerals & Petroleum Ops, Attn: Ahmed Naclji


1./

Fax:

Gordon Hul'1ta"

Please find attached the Daily Drilling summary report for 111!\ & 1211l April 1998.

To:

Premier 011 Auslrala!iaGeelong Operations BasePhone: 0352722101Fax: 0352722058

13/04 '98 12:43 FAX 0352722058

Fax

IIIIIIIIeIIIIII_IIIIIII

--•.•.---.•--"" _ , • •__ •.....• "."w ..

,,,,,,,,,.__.._._----_ ,,,,,,,,,,,,,,,,,,.-,----------_..-_ - ".,,,.,,,,,,,,,.,.,,,,,.,,,,,,,, ,,., _--_ _--

24 hr SUMMARY: .. Drilled 17 1 l2"hoIeio 441M. EleetlMedT problems>Vith -T-DS·. -POOH for-lOS' repairs. WOW:'" .

STATUS AT 0600: WOW

PLANNED OP ; WOW. RIH wi 17 '/2" assy &drill to section TO. Wiper trip. POOH. RU, run & cmt 13 3/8"

~ 02/03

HOLE'SIZE ("): 17.50

DIFF. AFE..CUM S5,937, 755.

REP. OATE'~ 12:1l4·.M·-'·

AFE: $10,078,164


RIG': Northem Explorer'/U ...

REP. "NUMBER: 9

,"LOCATION ' ·FAx.NO. ..

CUM :$4,140,429

Minerals & ~etroreum 0394125152Cue Energy Resource 0396297318Boral Energy ResoufC> 0882231851Mineral Resource Tas 0362338338Santos Ltd. 0882247765Boral 0733697640

PROGRESS·(m}288J)Q· .. · DAYS FROM SPUD 3.1'3 _.. DAYS'+!- CURVE :"

$155,715

441.00

Northern Offshore

13/04 '98 12:43 FAX 0352i22058

DRILLING CO.:

DEPTH'(m):

WELL: Yolla-2

COST DATADAILY:


Copyright IDS, Nov 1997


Premier OilManagement Report-~ lssue--cIate-13.D4~98-

IIIIIIIIIIIII.-IIIIIII

------,

"""",_ .. ,,,.,... ,.__._--------_._....._.,, ..,, ... ,, .. ,,,, .... ,,,,",,,,,.,.,,,, .. ,.. ,..,.. ',,,-_..__ ...,... __._-------_.. _.-_._.._.__..__...._------- ._--_...

1------.._-_.._ .._ ·_·_·_------------_·- _· _-.,,··,·_--~'''-'''-' __ _-

24 hr SUMMARY: MU 5" DP into stands. MU Emergengency hang-off tool, and put on rigfloor. MU new 17 /2"

STATUS AT 0600: Drilling 17 1/2' hole. Strapping 1~ 3/8" csg. _

PLANNEO-QP. :.- OriMo.section TD.· Displace holeto·1·.·14sg·HiVis::Wipehole.:l~e-<tisplace.asnecessary· -


14 03/03

HOI:.E·SiZ£ {l!): '17.50 ., .

DIFF. AFE-CUM S6,093,~70

REP. DATE : 11.04.~ ...

DAYS .fROM SPUD 2.·13 . . DAYS -+/- CURVE :

AFE : $10,078,184


Rl6~' ~orthem Exl'!erer·ll~ ...

REP. NUMBER: 8

CUM :$3,984,714

Minerals & Petroleum 0394125152Cue Energy ResGUt'ce G-396297-318- ..Boral Energy Resouro 0882231851Mineral Resource Tas 03823-383-3& _..Santos Ltd. 0882247765Boral 0733697840

....... LocATION"..... ." ,,..,·FAXHO· .... ;

PROGRESS·(m)·j,10 ...

FAX 0352i22058

$251,045

153.00

.NAME

13/04 '98 12:43

DRILLING CO.:" Nor1:hem Offshore

DEPTH {m):·· ..

WELL: Yolla-2

COST DATA

DAILY:

Ahmed NadjiAndrew AdamsAngus GuthrieCaml BaconNeil TupperRoss Naumann

Cop~gl'lt'les;'Nov ~97

Report Disbibution Lis,

IIIIIIIIIIIII.eIIIIIII

---------------------------------r--,-

-Co,.i'Wlits: ..

01/02 6


Da~ ApriI11,1998

cc:

From: Gordon Hunter


CJ For Review 0 Please·COmRI..... •.. D PleP&8~-- 0 ..........efICIe·

Cue Resources, Attn: AOOrew Adams


santos Ltd., Altn: Neil Tupper

Boral Energy Resources, Attn: A Guthrie, Ross Naumann

Vic:tOlia Minerals & Petroleum Ops, Attn: Ahmed Nadji

MirBal Resoort:eS TaSmania, Attn: Carol BaeDn

Re:

Gordon Hunter


Fax:

o Urgent

Please find attached the Daily Drilling summary report for 101ft April 1998.

To:

Premier Oil AusaralniaGeelong Operations BasePhone: 0352722101Fax: 0352722058

Pagel:----------------------

Regards

C.&~

11/04 '98 11:14 FAX 0352722058

Fax

IIIIIIIIeIIIII•IIIIIII

......_ ~._ _--_ _""..• "" _ _--_._ __.._. " _.__ _---_ .,. __.._-_. . _ .

iii 02/02


REP-;f)A.TE::::.10.Q4.98·' .

DAYS FROM SPUD 1.13



REP: 'NUMBER : 7 . :

.LOCATION· .. FAX NO

CUM :$3,733,669""- AFE::'$10,078,184 ... DrFF.:AFE·ClJM·S6,344, )15 -

Minerals & Petroleum 0394125152Cue Energy Resource 0396297318Boral Energy Resoum 0882231851Mineral Resource Tas 0362338338Santos Ltd. 0882247765Boral 0733697840

PROGRESS (m) 6.90

FAX 0352i22058

MU +1· 700m 5" DP. MU BHA & 26" bit. RIH-&·dFill·Gml.. shoe, & 1m new.formation·: SUNe!/-.-

$258,391-- .

151.90

Northem Offshore

NAME

DEPTH (m):

COST DATA

DAILY:

DRILLING CO.:

WELL: Yolla..~' ..

~

11/04 '98 11: 14

24 hr SUMMARY: : Drilled··26"'3Q"-hole from 145 -151-.9m:·Ral'l & cemented 30·'·conductor····



Premier OilManagement Report ~ Issue .date-11..04.98--

IIIIIIII

STATUS AT 0600 :' MU 5" CP. Prepare to drill 17 1/'2" hole, meanwhile.prepar.e to tension test anchors #5 & 8.

I PLA.NNED OP :

II Copyright IDS, NCN 1997

II,eIIIIIII

Please find attached the Daily Drilling summary report for 9~ April 1998.

01/02 Cf......... CAROL BACON


Pages:

Fro...: Gordon Hunter

L----. ".

I


PREMIER GEELONG

o Far ReYiew_ .. 0 P.lease..CaIllllUUlt. 0 I!Iuse..RaDlY

Yolla 2 Daily-nnlling Repofts-.:_- C_C_:_•.----------t----

Cue Resources, Attn:.Arl:lrew Adams.... '

Samos .Ltd.,M1n:.Neil.Tupper

Boral Energy ResolJ"CeS •Attn: A Guthrie, Ross Naumann

Vidoria Minerals & Petroleum Ops, Attn: Ahmed Nadji

-Conanw..'" - .

o Urgent

Regards


Phone:

Fax:

To:

Premier Oil ALIS1ralasiaGee/ong Operaliors BasePhone: 035272210'Fall':03527Z20S8

4'~~Gordon Hunter

10/04 '98 11:2i FAX OJ52i22058

Fax

IIIIIIIIeIIIII•IIIIII

~ 02/02

REP. DATE: 09.04.91 ..

AFE: $10,078,184 ., DIFF: AFE-CUM.$6,602',f.m& .


REP. NUMBER.:6. _

CUM :$3,475,278

Minerals & Petroleum 0394125152Cue Energy Resource. 039629731aBoral Energy Resourc· 0882231851Mineral Resource Tas 0362338338Sames· Ltd. .. . OaS2247765· ..Boral 0733697840

.,. LOCATION. . FAX 'NO

$517,255

Run &emt 30". MU 26" BHA'. 'Orilf out 30" shoe. MU 17 '/2- BHA RIH. Drill'1? 1/2- hole. Re-

NAME

WELL: Yolla·2

COST DATADAllY:

PLANNED OP:

_ _-_ - .. " -'--' "-"---'-' -- , , "" " .. _.._--_._._----,.."" ,,' _.._-_._ __ _. ', .. , , '" , _.. _._-_.._-_._. - "", , ',

10/04 '98 11:2i FAX OJ52i22058

Copyright IDS, NlJII1997' ..

-_ _ ,.,..- _•.__ " --._-_ - "" _ _.--_._ , "., _---_._.._ ,.."."..""."- .. ,, __ ---

Ahmed NadjiAndrew AdamsAngus GuthrieCarol BaconNeil-::ruPPlilr: .Ross Naumann


Premier OUManagement Report: Issue date 10.04.98

DRILLING CO.: Northem Offshore RIG: Northem Explorer III HOLE SIZE ("): 36.00

DEPTH (m): 145.00 PROGRESS (m) 145.00 DAYS FROM SPUD 0.13 DAYS +/- CURVE

Ie 24 br SUMMARY: -WOW.befor.e continuing \&lith anchor. operations.. Moved.cig over final locatian.'& .test..pu"~ __

STATUS AT 0000': Spudded well at 21:00hrs. Drilled to 151M. Out of hole with 26"/36" BHA. RU torun'3Q"-

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.01/02c3

o PJoese. ReelC.e .


Pages:

From: Gordon Hunter

CC:' .


o For-Reoiew

Voila 2 Daily DriRing'RePorts

Vi.doria Minerals &Petroleum Ops, Attn: Ahmed Nadji

Cue Resources, Attrr AndreIN Adams

Santos·Ltd, ,'A1'!R" Neil-TupPer

Boral Erergy Resources, Attn: A Guthrie, Ross Naumann

Mineral Resourt:es Tasmania, Attn: Carol BaeDn

Dnlling Superintendent

Phone:

Please find attached the Daily Drilling summary report for am April 1998.

Fax:

o Urgent

To:

Premi8l' OU AustralasiaGeelong Operations BasePhone: 0352722101Far. 035272205S

Date: April 9, 1998----------------------

Regards

C&~·Gordon Hunter

09/04 '98 12:05 FAX 0352722058

Fax:

I,

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---------------,-----....,

....................._-----_.__..•._ _ _..- _------_ ..---_ _ .

24 hrSt1MMARY: Re:-sel alld,ol'5'·&·tensiorT1ested-;; negative. Recovered #5 to "Commander's-U.ueck. ·w.e w - - .STATUS' AT'0600 : Waiting on weatherto'" abate-scfficientty-to' re-wor1<-anetTOrs:"


Reset primary (wi piggies) &secondary anchors, and attempt minimum tensioning. Atten pt to

~o 02/02

HOLE SIZE (") :

DAYS +/- CURVE.;:.

DIFF. AFE-CUM $7,150,182

REP. DATE: 08.04.9E

I

......... CAROL BACON

DAYS FROM SPUD:

AFE: $10,108,205

PREMIER GEELONG


REP. NUMBER: 5

.L:OCATION FAX .NO .

CUM : 52,958,023

IMinerals & Petroleum 0394125152

ICue Energy Resource 03962973188oral..~nerg)' Resourc, 0882231851Mineral Resource Tas 0362338338Santos· ltd, ... 0882247765 . -Boral 0733697840

PROGRESS (m) :

Northem Offshore

'$140,'95

NAME

09/04 '98 12:05 FAX 0352i22058

WELL: Yolla-2

DRILLING CO,:

DEPTH (m):

COST DATADAILY:

PLANNED OP:



Report Distribution List_

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Please find attached the Daily Drilling summary r~ort for 7t. April.1998.

Gordon Hunter

. 01102

o Please Recycle


Pagel:

Date: April 8, 1998

From: Gordon Hunter

ee:

o Pleas. Reply


o Please Commento For Review




ViciClia Minerals & Petroleum Ops, Attn: Ahmed Nadji

Boral Energy Resources, Attn: A Guthrie

Mineral Resoorces Tasmania, A1tn'·Carol-Bacon ...

He:


-Comments:

Phone:

Fax:

o Urgent

To:

Premier O~ AustnllasiaGeelong Opel<ltions BasePhone: 0352722101Far. 0352722058

Regards

~.VL~

08/04 '98 15:45 FAX 0352i22058

Fax

IIIIIIIIeIIIIII-IIIIIII

" .. , .. , __ _..__. -__"".._, """_"",,, " " .. ,., ,.' _ _ _ •• _ _ , , , ,''''"'"',,,,.. ",., , "'" ."", ., '.'d. ",,'d.' " __ ..

~ 02/02

HOLE SIZE (") :

DAYS +1· CURVE:



DAYS FROM SPUD:

REP. NUMBER:4 -

LOCATION FNCNOMinerals & Petroleum 0394125152Cue Energy Resource 0396297318Boral Energy Resourc 0883231851Miner.al Resource Tas 0362338338:.::..:Santos Ltd. 0882247765

PROGRESS (m) :

$135,1i5 ..

Northern Offshore

Mobilise Stevshark anchors. Review situation for'possibililyof spuQ with reduced pa~amE ters

NAME

98/04 '98 15:4$ FAX OJ52i22058

DRILLING CO.:

DEPTH (m):

COST DATADAILY

---_ """.",., .•., _.._ _._----_ _ _, ,., ,., ''''-''''.. , __.- _ - -.._.__..__.-_._._-_ __ ._ , , .

PLANNED OP:

24 hr SUMMARY: Ran anchors & attempted test pulls without success. Loaded anchor handler with piggy Dacks

STArblS' AT -OSOO :-Ar.1shars.sljpping·on hard seabed.=CooUo. W.or:k..dFjl~nQ;eqL2ipment~n deck.

Ahmed NadjiAndrew AdamsAngus GuthrieCarol.Baam ,Neil Tupper

Premier OilManagement Report: Issue date 08-.04-.98'-'Report Distribution Lis1

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Copyright IDS, New 1997

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Please find attac:hed ttIe Daily Drilli~ summary reports for 41h and Slh April 1998.

I4J 01


Pages:

From: Gordon Hunter

cc:

Date: AprilS, 1998- .-


santos Ltd., At1rI: Neil Tupper

YoIla 2 Daily Drilling Reports


Mineral Resa.lrc:es Tasmania, AItri: Carol BaCon

BOra! Energy Resources, Attn: A Guthrie


Drilling Supprintendent

o Urgent ..i1Far RM.. 0 Please Comment D..J!I.....AepIy

Premier O~ AustralasiaGeelong OpeBtiOI15 BasePhone: 0352722101Fax: 0352722058

To:

96/04 '98 19:43 FAX 0352722058

Fax

IIIIIIIIeIIIIIfIIIIIII

-_ _. -_ _.. " .. , ,,, _._._--------, ..-- ,., ""."", '_ _-_•....__.---_.-._ ..-.. _ """"" ,.", , - .._._.----._.._-- --_ ..

f------ ,." , ", -.----------- - ,. """-"'''''. "_.~--. - -------..--- ,..,.

Premier-OilManagement Report: Issue date 06.04.98

4 hr SUMMARY: Loaded rig and anchor handler. Proceeded to location.

STATUS AT 0500: On location & preparing to run anchors.

I4J 02

.,.,.....• , , _ _.-----_..-HOLE SIZE (") :

DAYS +/. CURVE :

DIFF. AFE-CUM $7J980,~17'

REP_.CATE-: 04:04:..9i: --.,

AFE: $10,108,205


RIG: Northern Explorer JII

DAYS FROM SPUD:

REP. NUMBER-::L.

LOCATION FAX NO

CUM: $2,127,788

Minerals & Petroleum 0394125152Cue 'Energy-Resource -039629731'8·····Boral Energy Resourc, 0883231851Mineral Resource Tas 0362338338Santos Ltd. 0882247765

PROGRESS (m) :

FAX 0352722058

Run anchors.

$2,127,788

Northern Offshore

06/04 '98 19:43

COST DATADAllY:

WEll: Yolla.;2

DRILLING CO.:

DEPTH (m):

PLANNED OP:

Copyrlghl: lOS, Nov 1997

Ahmed NadjiAndrew AdamsAngus GuthrieCarol BaconNeil Tupper


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r------ --.-..-.------.-..- , -,.,..,,'..-..---.--------.- - ",." """". - -.---..----------.- .

4 hr SUMMARY: Move to location & run anchors. Wait on anchor handler crew. Prepare to spud well.

STATUS AT C600 :' Preparing to run anchors after shutdown

Premier Oil .-Management Report: Issue date 06.04.98

... . ._- .._------_...... -... , .",,,,, ., ......... _-----_._-------

~03

HOLE SIZE (") :

DAYS· ....7-£URVE :

REP. DATE: 05.04.98

-+-+-+ CAROL BACON

DAYS FROM SPUD:

PREMIER GEE LONG


REP. NUMBER:2

.LOCATION FAX NO

CUM '~$2,443,945"- AFE: '$10,108,205 .- DIFF.-AFE.c-UM $7,664', 60

Minerals & Petroleum 0394125152Cue Energy Resource 039629731880ral Energy Resourc 08B3231851Mineral Resource Tas 0362338338Santos Ltd. 0882247765

PROGRESS (m):···

$316, 1"57 -

Run 4ttrprimary-anshor ana·-sta~~oading()utand"laying secondal)'-ar-u:;hol's ,,-

Northern Offshore

NAME

96/04 '98 19:43 FAX 0352i22058

WELL: Yolla-2

DRILLING CO.:

DEPTH (m):

COST DATADAILY;

PLANNED· QP. :..

Copyright lOS. Nov 1997

Ahmed NadjiAndrew AdamsAngus GuthrieCarol BaconNeil Tupper


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Documents

4 l2l9-JUN-1998 15:43 P. 1 I c=JBORAL ENERGY I · 0.15% and CO2 4%) and MDT at2811.8 metres recovered 18.84 cubic feet of gas (C, 62.6'%, C2 23.1 %, Cs 10.2%, jC4 1.8%, nC4 1.5%,