gsq-horizon.s3.ap-southeast-2.amazonaws.com€¦ · (ii) T22 TAYLOR-22 WELL COMPLETION REPORT TABLE OF CONTENTS 1.0 WELL CARD

TAYLOR-22

WELL COMPLETION REPORT

PL 16

SURAT-BOWEN BASIN

S.E. QUEENSLAND

SEPTEMBER 2010

Mosaic Oil Qld Pty Ltd

Level 12, 10 Bridge Street, Sydney NSW 2000

Phone 02 9247 9324, Fax: 02 9241 1655

Email: [email protected] , Web: www.mosaicoil.com

Report No. T22 Prepared by: Steve Miller, Michaela Russell

mailto:[email protected]://www.mosaicoil.com/

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T22

TAYLOR-22 WELL COMPLETION REPORT

TABLE OF CONTENTS

1.0 WELL CARD .............................................................................................. 1

2.0 WELL HISTORY AND GEOLOGICAL SETTING .............................. 3 2.1 GEOLOGICAL SETTING ................................................................................................ 3

3.0 DRILLING DATA ...................................................................................... 7 3.1 ONSITE CONTRACTORS .............................................................................................. 7

3.2 DRILLING SPECIFICATIONS ........................................................................................ 7

3.3 OPERATIONS SUMMARY ............................................................................................ 8

3.3.1 Mobilisation ........................................................................................................ 8

3.3.2 12 ¼” Hole Section ............................................................................................. 8

3.3.3 7 7/8” Hole Section .............................................................................................. 8

3.4 TIME ANALYSIS ............................................................................................................ 9

3.4.1 Time Break Down ............................................................................................... 9

3.4.2 Non Productive Time .......................................................................................... 9

3.5 BIT RECORD ................................................................................................................. 12

3.6 BOTTOM HOLE ASSEMBLY RECORD ..................................................................... 12

3.7 DRILLING PARAMETERS ........................................................................................... 12

3.8 DEVIATION SUMMARY ............................................................................................. 12

3.9 DRILLING FLUIDS SUMMARY .................................................................................. 13

3.10 CASING AND CEMENTING SUMMARY .................................................................. 13

3.11 PRESSURE AND TEMPERATURE ............................................................................. 13

3.12 COMPLETION ............................................................................................................... 13

3.13 SAFETY RECORD ........................................................................................................ 14

4.0 FORMATION SAMPLING AND EVALUATION ............................... 17 4.1 MUD LOGGING ............................................................................................................ 17

4.2 DITCH CUTTINGS ........................................................................................................ 17

4.3 WIRELINE LOGGING ................................................................................................... 18

4.4 DRILL STEM TEST ....................................................................................................... 18

4.5 CORING ......................................................................................................................... 18

5.0 WELL RESULTS ..................................................................................... 19 5.1 FORMATION TOPS ...................................................................................................... 19

5.2 WELL STRATIGRAPHY .............................................................................................. 19

5.2.1 Wallumbilla Formation (surface casing shoe (229mRT) - 588.33mRT) .......... 19

5.2.2 Bungil Formation (588.33 – 788.73mRT) ........................................................ 21

5.2.3 Mooga Sandstone (788.73 – 946.93mRT) ........................................................ 21

5.2.4 Orallo Formation (946.93 – 1063.54mRT ........................................................ 22

5.2.5 Gubberamunda Sandstone (1063.54 - 1235.59mRT) ....................................... 22

5.2.6 Westbourne Formation (1235.59 - 1348.49) ..................................................... 23

5.2.7 Springbok Sandstone (1348.49 - 1411.51mRT) ............................................... 23

5.2.8 Walloon Formation (1411.51 - 1587.59mRT) .................................................. 23

5.2.9 Hutton Sandstone (1587.59 - 1756.95mRT) ..................................................... 24

5.2.10 Evergreen Formation (1756.95 - 1858.08mRT) ............................................... 25

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T22

5.2.11 Moolayember Formation (1858.08 - 1972.17) .................................................. 26

5.2.12 Snake Creek Mudstone (1972.17 - 1989.30mRT) ............................................ 26

5.2.13 Showgrounds Formation (1989.30 - 1996.02mRT) .......................................... 26

5.2.14 Bandanna Formation (1996.0 - 2007.80mRT) .................................................. 27

5.2.15 Basement (2007.8 - 2038mRT Total Depth) .................................................... 27

5.3 HYDROCARBON INDICATIONS ............................................................................... 27

5.4 PETROPHYSICAL INTERPRETATION ...................................................................... 28

6.0 WELL POST MORTEM ......................................................................... 28

7.0 REFERENCES .......................................................................................... 30

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T22

TAYLOR-22 WELL COMPLETION REPORT

APPENDICES, TABLES, FIGURES AND ENCLOSURES

APPENDICES

Appendix A Well Survey Plan

Appendix B Daily Drilling Reports

Appendix C Drilling Fluids Report

Appendix D Casing and Cementing Reports

Appendix E

Appendix F

DST#1 Report

Daily Geological Reports

Appendix G Log Analysis

TABLES

Table 1 Time Breakdown

Table 2 Bit Record

Table 3 Bottom Hole Assembly Record

Table 4 Deviation Surveys

Table 5 Ditch Cuttings Sample Sets

Table 6 Wireline Logging Programme

Table 7 Formation Tops

Table 8 Summary of Hydrocarbon Indications in Cuttings

FIGURES

Figure 1 Location Map

Figure 2 Surat – Bowen Basin Stratigraphy

Figure 3 Time versus Depth

Figure 4 Graphical Time Breakdown

Figure 5 Well Design Schematic

Figure 6 Completion Diagram

Figure 7 Top Showgrounds Formation Depth Structure Map

Figure 8 Taylor-22 Post-drill Well Tie: Seismic Line 85B-72 (2009

Reprocessing)

ENCLOSURES

Enclosure 1

Enclosure 2

Formation Evaluation 1:200

Wireline Logs 1:200

(a) Run #1: MDL-MSS-MPD-MDN 1:500

(b) Run #1: MDL-MSS-MPD-MDN 1:200

Enclosure 3 Composite Log 1:500

DIGITAL WELL DATA

Mudlogging Data: Taylor-22 Mudlog Digital Data Ascii

Wireline Logging Data: Taylor-22 Wireline Digital Data LAS

T22

1

1.0 WELL CARD

Taylor- 22 General Data

LOCATION: Latitude: 27° 35‟ 01.7487” S Grid Easting: 719 581.877mE

Longitude: 149° 13‟ 28.0966” E Grid Northing: 6 946 923.217mN

Ground Elevation: 311.3 m Datum/Projection: GDA94/MGA Zone55

Rotary Table-“RT” 316.7 m

SEISMIC LINE: SP 439.2, Line 85B-72 (2009 Reprocessing) OPERATOR: Mosaic Oil (Qld) Pty Ltd

PERMIT: PL16 PARTICIPATING INTERESTS:

SPUDDED: 12:00hrs 26th June 2009 Mosaic Oil (Qld) Pty Ltd 100%

REACHED TD: 01:00hrs 5th July 2009

RIG RELEASE: 24:00hrs 8th July 2009

OBJECTIVE: Showgrounds Formation COMPLETION DETAILS:

RIG: MB Century #7 Perforations: 1990.50-1992.25mRT

Showgrounds Formation STATUS: Suspended Gas Condensate Producer

TOTAL DEPTH: Driller: 2038mRT Logger: 2037.05mRT CASING DETAILS:

HOLE SIZE : 12 ¼” 7 7/8” 16” 9

5/8 “ 5 ½ “

DEPTH (mRT): 229 2038 Depth Driller (mRT): 10 226.8 2038.0

RESULTS: Log and DST data indicated gas and condensate in the Showgrounds Formation Sandstone.

Formation Tops

Prognosed Taylor- 22 Actual Difference

Depth Thickness Depth Thickness

mSS mRT m mSS mRT m m Hi/Low

RT -316.6 0 0 -316.7 0.0

GL -311.2 5.4 5.4 -311.3 5.4

Griman Creek

Surat Siltstone -75 242 131

Wallumbilla 56 373 206

Bungil 262 579 205 271.63 588.33 200.40 9.73L

Mooga Sandstone 467 784 154 472.03 788.73 158.30 5.03L

Orallo 622 938 135 630.33 946.93 116.61 8.93L

Gubberamunda 757 1074 162 746.94 1063.54 171.95 10.06H

Westbourne 919 1236 111 918.89 1235.59 113.00 0.11H

Springbok Sandstone 1030 1347 55 1031.89 1348.49 63.02 1.49H

Walloon Coal 1085 1402 196 1094.91 1411.51 175.98 9.91L

Hutton Sandstone 1281 1598 145 1270.89 1587.59 169.36 11.89H

Evergreen 1426 1742 38 1440.25 1756.95 101.13 14.25L

Boxvale Sandstone 1464 1780 62 1480.10 1796.80 16.10L

Moolayember 1526 1843 110 1541.38 1858.08 114.09 15.38L

Snake Creek Mudstone 1636 1953 18 1655.47 1972.17 17.13 19.47L

Showgrounds 1654 1971 10 1672.60 1989.30 6.72 18.60L

Bandanna Formation 1664 1981 13 1679.32 1996.02 11.78 15.32L

Kuttung 1677 1994 1691.10 2007.80 14.10L

TD (logger) 1717 2034 1721.3 2037.05

T22

2

Wireline Logging Summary

COMPANY: Weatherford Wireline Services

RUN TOOL STRING INTERVAL

(mRT)

BHT /TIME SINCE

LAST CIRC.

1 GR-MDL-MMR-MSS-MPD-MDN-CAL 5 - 2036.20 * 79°C / 15.5hrs

* GR to surface through casing

Hydrocarbon Summary

INTERVAL DESCRIPTION

1430-1490mRT

Walloon CM Peak Gas 60 units/ Background 3 units. 80/8/8/4/tr

1490-1560mRT

Walloon CM Peak Gas 60 units/ Background 3 units. 79/8/8/4/1

1910-1925mRT

Moolayember Fm Peak Gas 60 units/ Background 15 units. 84/8/4/3/1, sandstone

1925-1940mRT

Moolayember Fm Peak Gas 25-17 units, 84/9/5/2

1990-1992mRT

Showgrounds Fm Peak Gas 60 units/Background 30 units. 72/12/6/8/2. Top of Showgrounds Fm

1992-1996mRT

Showgrounds Fm

Peak Gas 150 units/ Background 60 units. 72/12/6/8/2. Middle Showgrounds Fm.

TRACE SHOW (1995-1998.5mRT): dull yellow, even, very weak diffuse pale

yellow cut, weak crush cut, thin pale yellow ring residue from very fine tight sst.

1998.5-2007.5mRT

Bandanna Fm Peak gas 120 units, decreasing to 30 units. 90/8/2, coal peak

Bit Record

Bit

#

Size Make Type IADC Serial

#

Jets (1/32”)

In

(m)

Out

(m)

Metres

(m)

Hours Condition

1 12.25 Reed EHT11G 117 CL4809 4x18 10 229 219 11.5 2-2-WT-A-E-0-ER-TD

2 7.875 Reed DSX519M-C1 M222 123283 3x12,4x10 229 1796 1567 77.0 3-4-WT-S-X-0-CT-PR

3 7.875 Reed R09AMP 437 MP5197 3x14 1796 2038 242 47.5 3-4-WT-A-E-2-LT-TD

Drilling Supervisors: M.Troughton/

M McMeniman

Geologist: Les

Burgess

Mud Engineer: Chris

Mahoney

T22 3

2.0 WELL HISTORY AND GEOLOGICAL SETTING

The Taylor-22 development well was drilled in PL 16, located in the Surat-Bowen Basin of

SE Queensland (Figure 1). The well is sited in the south-eastern sector of the Taylor Oil

and Gas Field (southern pool) and was drilled to target gas reserves in the mid-Triassic

Showgrounds Formation reservoir up-dip of the Taylor-10 production well. Taylor-22 was

drilled as a vertical well at the intersection of seismic lines 83-B23 (SP 138.9) and 85-

B72 (SP 439.2). The well is located approximately 900 metres NNE of Taylor-10 and

approximately 900 metres east of Taylor-19, drilled by Mosaic in 2008. The final well

survey plan is attached as Appendix A.

Taylor-22 was spudded on 26th

June and reached a total depth of 2038 mRT in basement

(Kuttung Volcanics) on 5th

July, 2009. Formations were mostly encountered low to

prognosis, the Showgrounds Formation being intersected 10.89m low. Wireline logs,

fluorescence and gas observations, and a drill stem test indicated commercial gas

condensate saturation in the upper part of the Showgrounds Formation Sandstone. A 5 ½”

production casing string was set at 2038mRT and MB Century Rig #7 released on 8th

July.

Taylor-22 was completed with Wild Desert and perforated over the uppermost

Showgrounds Formation sandstone interval 1990.5-1992.25mRT. During a 2 hour clean-up

flow Taylor-22 achieved a stabilised gas rate of 8.0MMscf/d with associated condensate

through a 32/64” choke with flowing pressure of 1310psig.

2.1 GEOLOGICAL SETTING

Taylor-22 was drilled as a Showgrounds Formation gas development well targeting gas

reserves in a fault-bound compartment developed in the southern pool of the Taylor Oil

and Gas Field, up-dip of Taylor-10. The structural setting is comparable to the nearby

fault compartment in which Taylor-19 was successfully drilled and completed in 2008.

The Taylor Field is located on the Wunger Ridge, a NNE-plunging basement high

developed on the western flank of the Bowen Basin. Production is from the Mid-Triassic

Showgrounds Formation sandstone reservoir within the structurally complex Taylor

feature. The trap is developed by onlap of the reservoir against a basement high, the

Taylor structure, sealed by the Mid-Triassic Snake Creek Mudstone which directly

overlies both the Showgrounds Formation sandstone and, where the Showgrounds is

absent, the adjacent basement rocks.

The Taylor field comprises a northern pool, developed by Taylor-1 and 11, and a more

extensive southern pool, with poor communication between the two pools. The southern

pool is developed within the Showgrounds Formation sandstone reservoir where it is

preserved within structural and/or erosional embayments in basement topography (e.g.,

Taylor-19 and 22 compartments), along fault-controlled, linear basement flanks and on

gently dipping structural noses developed at basement level along the southern side of the

Taylor structure. The Showgrounds Formation reservoir in the southern pool contains a

gas cap and oil leg, with the original GOC at approximately 1683mSS and OOWC at

approximately 1690mSS.

The southern pool was developed by Taylor wells # 4, 5, 7, 8, 9, 10, 12A, 15, 16 and 17.

Production commenced from Taylor 4 in May 1988 with five additional wells online in

January 1989. Taylor-18 and 19 were drilled, completed and tied-in by Mosaic in 2008.

T22 4

Taylor-22 was prognosed to intersect a Surat Basin Cretaceous to Jurassic section

approximately 1,840 m thick, typical to that developed in this part of the basin as

intersected in nearby wells. The Cretaceous-Jurassic section in the Taylor Field is

considered not to be prospective for oil or gas accumulations, although elevated mudlog

gas levels may be observed within the Boxvale Sandstone.

The well was prognosed to intersect a thin Bowen Basin section underlying the Jurassic,

consisting of 150m of Triassic and Permian strata with the Showgrounds Formation

directly overlying a thin Permian section. The stratigraphy of the Surat and Bowen

Basins is shown in Figure 2.

Taylor-22 was programmed to TD in basement at a depth adequate for a wireline logging

rathole. Basement in this part of the Bowen Basin consists of either Timbury Hills

Formation metasediments or Kuttung Volcanics.

T22 5

Figure 1: Location Map

T22 6

Figure 2: Surat – Bowen Basin Stratigraphy

T22 7

3.0 DRILLING DATA

3.1 ONSITE CONTRACTORS

Mosaic Drilling Supervisors : Mike Troughton / Mick McMeniman

Wellsite Geologist : Les Burgess

Site Construction : Jim Sidney Earthmoving

Drilling : MB Century Drilling Limited

Cementing : Halliburton

Mud Engineering : RMN Drilling Fluids

Electric Logging : Weatherford Wireline Services

Mud Logging : Geoservices Australasia Pty Ltd

Trucking : Wild Desert

3.2 DRILLING SPECIFICATIONS

Drilling Contractor: MB Century

Depth Rating: 3,000m with 4-1/2” (16.6lbs/ft) drill-pipe

Carrier: Cooper

Drawworks: Cooper LTO 750 hp with Parmac 202 Brake

Engines / Power Units: 2 x Caterpillar 3406 Diesel Engines

Mud Pumps: 2 x National 8-P-80 800hp@160 SPM

Power Units (Pumps): 3 x Caterpillar 550 hp D-379

Mast: 120‟ clear height rated to 338,000lbs with 8 lines

Gross Nominal Capacity: 338,000 lbs

Sub-Structure: Clear height - 14‟

Floor Height - 17‟

Casing Capacity: 350,000 lbs (on rotary)

Setback Capacity: 200,000 lbs

Blowout Preventers

& Accumulators: 1 x 11” 5000 PSI Double Ram

1 x 11” 5000 PSI Annular

1 x Koomey Accumulator

Choke Manifold: 1 x 5000 PSI with 2 x 3 1/8” Adjustable Chokes

Drill Pipe: 10,000‟ x 4 ½” O.D.

16.6 lb-ft Grade “G-105”

6 x 4 ½” HWDP

30 x 5” HWDP

Drill Collars: 4 x 8” O.D.

6 x 6 ¼” O.D.

Rotary Table: National 17 ½”

Travelling Block: National 435-G-175

Drill Line Size: 1 1/8” diameter

T22 8

Swivel: Ideco TL-200

Mud Tank Capacity: 500 bbls

Trip Tank: 40 bbls

Water Tank Capacity: 400 bbls

Fuel Tank Capacity: 22,000 litres

Day Fuel Tank Capacity: 5,000 litres

Desander: 2 x 10”

Desilter: 10 x 5”

Degasser: Drilco See-Flo

Degasser Poor Boy: 40” x 20‟

Shale Shaker: 2 x Drilling Fluid Equipment (DFE) – SCR-01

Generators: 2 x Leroy-Somers SR-4 (275 kW @0.8PF)

Camp: 30 Man

3.3 OPERATIONS SUMMARY

The hole took 12 days and 12 hours from spud to rig release. Refer to Appendix B for

daily drilling reports.

3.3.1 Mobilisation

MB Century Rig-7 was mobilised from Mosaic‟s Waggamba 5H location. After

completion the rig was mobilised to Mosaic‟s Taylor 20 location.

3.3.2 12 ¼” Hole Section

26/06/09: Spud well at 12:00hrs, drill 12.25” hole to 78mRT. Circulate and ran survey at

66mRT. Drill ahead to 226mRT

27/06/09: Drill ahead to 229mRT, circulate hole clean and ran survey at 224mRT, POOH

to run casing. Lay down 12.25” BHA, rig up and run casing. Wait on Halliburton due to

wet conditions of lease and access road. Rig up cement head and lines, cement casing as

per programme. Bump plug at 310 psi and pressure up to 1200 psi and hold for 10 min.

Wait on cement, drain and flush riser and cut conductor. Prepare for nipple up.

28/06/09: Continue to nipple up 13.625” BOP and choke line. Hook up Koomey lines

and install bell nipple. Pressure test surface lines and valves, upper and lower Kelly cock,

FOSV and Grey valve to 200/2200psi. Attempt to test braiden head but cup tester

leaking. Lay out cup tester, closed blind rams and tested against casing at 1500psi for 10

min.

3.3.3 7 7/8” Hole Section

28/06/09: Pressure test Blind Rams, Pipe Rams, kill line valves and lines to 250/2200psi.

Make up BHA #2 with 7.875” bit and stabiliser. RIH and tag top of cement at 213mRT.

Drill out cement, float and shoe track and 3m of new formation to 232mRT. Circulate

hole clean and ran a formation integrity test (FIT), 260psi with 8.65ppg, 15.3 EMW.

Drill ahead to 321mRT. Bail struck derrick during a connection causing the bail to

hangover beam in derrick (unable to come down). Cleared bail, and inspected derrick.

Drill ahead to 340mRT.

29/06/09: Drill ahead to 533mRT and run survey. Drill ahead to 955mRT.

30/06/09: Drill ahead to 1013mRT. Circulate and run survey. Drill ahead to 1166mRT.

Rig service, continue drilling to 1416mRT and circulate and run survey at 1404mRT.

Drill ahead to 1464mRT.

T22 9

01/07/09: Drill ahead to 1753mRT, circulate hole clean and run survey at 1741mRT.

POOH on wiper trip from 1753 – 1106mRT and flow check at 5, 10 and 20 stands pulled.

Work tight hole from 1404 – 1340mRT, 1310 – 1238mRT, and 1224 – 1106mRT with up

to 45K overpull.

02/07/09: Continue to POOH on Wiper Trip from 1106 – 895mRT, and work tight hole

from 1106 – 934mRT with up to 30K overpull. RIH on Wiper Trip from 895 – 1741mRT

and washed down to 1753mRT. Drill ahead to 1796mRT. Low penetration rate due to

damaged bit. POOH with Bit #2 and break out. Make up Bit #3 and RIH.

03/07/09: Wash down from 1783 – 1796mRT. Drill ahead to 1909mRT.

04/07/09: Drill ahead to 2032mRT.

05/07/09: Drill ahead to 2038mRT, circulate hole clean and run survey at 2028mRT.

POOH to run logs. Clear floor, rig up Weatherford and RIH with logging Run #1 MBE,

MCG, MDN, MPD, MSS, MUG, MLE, MMR. Log out of hole and lay down tools. Rig

down wireline loggers. Make up tools for DST#1 – inflate test from 1987 – 1997mRT.

06/07/09: RIH with DST#1 to 1968mRT, and space out with pup joints to 1983mRT.

Rig up wireline and correlate on depth with Weatherford. Test interval from 1987 –

1997mRT. Rig down Weatherford, make up DST head and lines. Pressure test

equipment to 2000psi and inflate packers. Pressure built up to 900psi with condensate to

surface. Flow well for 1 hour. Shut tools in for 2 hours and monitored well. Pick up and

deflate packers and reverse circulate well. Shut down pumps, and bleed annular pressure;

well flowing. Closed annular and circulated with 9.3ppg mud. Shut pumps down and

open annular; well still flowing slightly. Increase mud weight to 9.4ppg and circulate.

Well static. POOH with DST#1.

07/07/09: Continue POOH with DST#1. Break and lay out DST tools, and retrieve

sample chamber and recorders. Make up clean out bit and RIH. Wash down from 2028 –

2038mRT and circulate hole clean. POOH with BHA and Rig up to run 5.5” casing.

Change out 4.5” pipe rams to 5.5” casing rams, test to 1000psi for 10min, OK.

08/07/09: Make up float and shoe and run 173jts of 5.5”, 15.5# BTC production casing to

2038mRT. Make up circulating swedge and line and circulate hole clean. Rig down

circulating swedge and Rig up cement head and lines. Pump 5 bbls spacer and pressure

test lines to 3000psi, OK. Pump 25 bbls spacer, mix and pump 116bbls of 13.5ppg Lead

cement and 29 bbls tail cement. Drop plug and displace with 159 bbls of H2O. Bump

plug at 1600psi and pressure test casing to 2500psi for 10 min, floats holding. Rig down

cement head and lines and set casing slips with 10,000lbs over string weight. Nipple

down BOP, choke, and kill lines and lift BOP‟s. Rough cut landing joint and lay out. Set

down BOP‟s and clean mud tanks. Clear Rig floor and load out Kelly and Swivel. Final

cut 5.5” casing and install “B” section.

3.4 TIME ANALYSIS

Taylor-22 took 12.5 days to drill and case (Figure 3). The well was spudded on the 26th

of June 2009 and the rig was released on the 8th of July 2009.

3.4.1 Time Break Down

An analysis of time by operational categories is provided in Table 1 and Figure 4.

3.4.2 Non Productive Time

A total of 4.5 hours were lost. Non Productive Time included: a complete electrical shut

down on rig due to desander motor tripping power (0.5 hours), waiting on Halliburton for

T22 10

surface cementing due to wet conditions of the lease and access road (2 hours), bail got

caught up on beam of derrick preventing blocks to be lowered (0.5 hours), repair band

release springs on drawworks brakes (1 hour), problem with drawworks gear selectors

(remove lines and lubricate, 0.5 hours).

0

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

0 2 4 6 8 10 12 14

Dri

lled

De

pth

(m

RT)

Days from Spud

Forecast

Actual

1

2

3

4

5

6

7

Griman Creek

Surat Siltstone

Wallumbilla

Bungil

Mooga

Orallo

Gubberamunda

Westbourne

Walloon

Hutton

Boxvale

Springbok

Evergreen

Moolayember

Snake CreekShowgrounds

TAYLOR - 221. Spud @ 12:00hrs 26/06/09

drill 12.25" hole to 229mRT

2. Run 9.625" casing. Nipple Up3. Drill 7.875" hole to 1753mRT4. Wiper Trip5. Change out bit

6. Drill 7.878" hole to 2038mRT7. Log, run DST#1, run casing, rig

release at 24:00hrs, 08/07/09

Figure 3: Time versus Depth

T22 11

Table 1: Time Breakdown

OPERATION Hours % Drilling 136.00 45.33

Wash/Ream 1.00 0.33

Circulate & Condition 8.50 2.83

Tripping - Bit / Casing 30.00 10.00

Tripping - Other 10.00 3.33

Wiper Trip 5.50 1.83

Handle BHA 9.50 3.17

Service / Slip Line 6.50 2.17

Repairs 2.50 0.83

DST 10.50 3.50

Survey 3.50 1.17

Logging 15.00 5.00

Rig up Casing / Cement 7.00 2.33

Run Casing 14.50 4.83

Cementing 3.00 1.00

Wait on Cement 4.00 1.33

BOP's / Wellhead 16.00 5.33

Test BOP / LOT 9.00 3.00

Other 8.00 2.67 TOTAL 300.00 100.00%

Drilling45%

Wash/Ream0%Circ & Condition

3%Tripping- Bit / Casing

10%

Tripping- Other3%

Wiper Trip2%

Handle BHA3%

Service / Slip Line2%

Repairs1%

DST4%

Survey1%

Logging5%

RU for Csg / Cmt2%

Run Casing5%

Cementing1%

Wait on Cement1%

BOP's / Wellhead5%

Test BOP / LOT3%

Other3%

Figure 4: Graphical Time Breakdown

T22 12

3.5 BIT RECORD

Bit data is provided in Table 2, bit condition was graded as per IADC guidelines.

Table 2: Bit Record

Bit

#

Size Make Type IADC Serial

#

Jets (1/32”)

In

(m)

Out

(m)

Metres

(m)

Hours Condition

1 12.25 Reed EHT11G 117 CL4809 4x18 10 229 219 11.5 2-2-WT-A-E-0-ER-TD

2 7.875 Reed DSX519M-C1 M222 123283 3x12,4x10 229 1796 1567 77.0 3-4-WT-S-X-0-CT-PR

3 7.875 Reed R09AMP 437 MP5197 3x14 1796 2038 242 47.5 3-4-WT-A-E-2-LT-TD

3.6 BOTTOM HOLE ASSEMBLY RECORD

BHA data is tabulated in Table 3.

Table 3: Bottom Hole Assembly Record

BHA

No.

Bit

No.

Hole Size

(ins)

BHA Description Depth in (m) Depth out (m)

1 1 12.25

Bit #1, Bit Sub, 1 x 8” DC, Stab, X/O, 12

x 6.5” DC, 6 x 6.25” HWDP.

Total=175.87m

10 229

2 2 7.875 Bit #2, Bit Sub, 1 x 6.5” DC, Stab, 12 x

6.5”DC, 6 x 4.5” HWDP. Total=184.09m 229 1796

3 3 7.875 Bit #3, Bit Sub, 1 x 6.5” DC, Stab, 15 x

6.5”DC, 6 x 4.5” HWDP. Total=211.46m 229 2038

3.7 DRILLING PARAMETERS

Drilling parameters are depicted graphically on the Engineering Log (Enclosure 1) and

listed in the attached Digital Data in the file “Taylor-22 Mudlog Digital Data Ascii”. Mud

Data are tabulated in the Drilling Fluids Report (Appendix C).

3.8 DEVIATION SUMMARY

Surveys were taken periodically to check that the well remained vertical (Table 4).

T22 13

Table 4: Deviation Surveys

3.9 DRILLING FLUIDS SUMMARY

The 12 ¼” section was drilled with a Gel – Native Clay Spud Mud. The 7 7/8” section

was drilled with KCl PHPA Polymer based fluid. Only KCl and PHPA were used in the

top section of the hole with the PHPA concentrations being steadily increased through to

950m. Pac-R was added to the system at around 950m to reduce the fluid loss to below

10mls, and the PHPA remained the same. The KCl concentration was maintained at 5-

6%, making the fluid reasonably inhibitive, ensuring minimum reactivity from the drilled

silts and clays. Refer to Appendix C for details.

3.10 CASING AND CEMENTING SUMMARY

The 12 ¼” hole was drilled to 229mRT and 9 5/8” casing was run to 226.82mRT. The

casing was cemented by pumping a 10bbl water spacer then 58bbl slurry of 15.6ppg and

displaced with 54bbl water. Plug was bumped at 310 psi (54bbls pumped) and pressured

up to 1200psi; held for 10 min. Cement returns to surface after 46bbls displaced.

The 7 7/8” hole was drilled to 2038mRT and 5 ½” casing run to 2038mRT. A 25bbl water

spacer was pumped followed by 116bbls of 13.5ppg Lead slurry and 29 bbls of 15.8ppg

Tail slurry. The plug was dropped and cement displaced with 159bbl brine. Plug was

bumped at 1600psi and the casing was pressure tested to 2500psi and held for 10 min.

Details are included in Appendix D.

3.11 PRESSURE AND TEMPERATURE

A DST was run in the Showgrounds formation from 1987 – 1997mRT. A maximum

temperature of 82°C and an initial shut-in pressure of 1732psi were recorded during the

DST. DST results are included in Appendix E.

3.12 COMPLETION

The well was completed with 5 ½” 15.5ppf production casing set at 2038mRT. On July

22nd

, 2009 a 3 3/8” TCP scallop gun was run on a 2 3/8” tubing string to perforate the

Showgrounds Formation from 1990.50-1992.25mRT. A packer was set at a depth of

1973.51mRT. An underbalanced sub was run within the completion string at a depth of

1977.90mRT to put the well in an underbalanced state once the perforating bar was

dropped. The well was opened to flare through a 32/64” choke setting for the clean up

period and a stabilized pressure of 1310psi was recorded after a 2 hr flow period.

Hole Size Survey

Type

Survey

No.

Depth

(mRT)

Deviation

(°)

Bearing

(°)

12.25 Totco 1 66 0.25 na

12.25 Totco 2 224 0.75 na

7.875 Totco 3 521 0.50 na

7.875 Totco 4 1001 1.00 na

7.875 Totco 4 1404 0.25 na

7.875 Totco 5 1741 0.75 na

7.875 Totco 6 2028 1.00 na

T22 14

3.13 SAFETY RECORD

A total of 4,476 accident free man hours were accumulated calculated on a 12 hour shift

per person on site. A safety meeting was held prior to spud. Additional safety meetings

were held prior to running wireline logs, casing and cementing operations. Appropriate

signage for explosives, pressure testing and neutron sources were prominently displayed.

Camp food preparation areas were maintained hygienically and smoke free. Camp and

Rig rooms were regularly cleaned and maintained.

T22 15

16" Conductor to 10mRT

9.625" Casing to 226.82mRT

12.25" Hole to 229mRT

7.875" Hole to 2038mRT 5.5" Casing to 2038mRT

Figure 5: Well Design Schematic

T22 16

Downhole Installation DiagramWell: Taylor 22

Item

No.

1 KB to top of tubing spool 5.00 5.00

2 Tubing hanger- 2 3/8 EUE 0.37 5.37

3 8', 4', 2' pup jts 2-3/8" EUE 4.7 lbs/ft 4.27 9.64

4 206 jts 2-3/8"EUE 4.7#/ft J 55 Tubing 1933.33 1942.97

5 1 x RA Marker 0.15 1943.12

6 3 x jts 2-3/8"EUE 4.7#/ft J 55 Tubing 28.61 1971.73

7 1 x Pup 2-3/8" EUE 4.7 lbs/ft 1.23 1972.96

8 5-1/2" x 2-2/8" EUE Packer 1.10 1974.06

9 1 x Pup 2-3/8" EUE 4.7 lbs/ft 2.45 1976.51

10 1 x Mechanical Gun Release Sub 0.54 1977.05

11 1 x Pup 2-3/8" EUE 4.7 lbs/ft 1.24 1978.29

12 1 x Underbalanced Sub 0.16 1978.45

13 1 x Perforated Pup 2-3/8" EUE 4.7 lbs/ft 2.52 1980.97

14 1 x Pup 2-3/8" EUE 4.7 lbs/ft 3.07 1984.04

15 1 x TCP Firing head 1.46 1985.50

16 Top shot to top of Top Sub 3.09 1988.59

PERFORATIONS Gun ChargesFormation Interval (m RT) Size Type SPF Type Ph gm

Showgrounds 1990.50 1992.25 3 3/8" TCP 6 Scallop

Surface Casing 9 5/8" 36# @ 226.82m Pump S/N

Production Casing 5.5" 15.5 ppf Description

Pump Unit Make Max St

Pump Unit Type N/A Comments

Current stroke setting

String Weight- Tubing: 18,000 lbs Sucker Rods:

Wellsite Supervisor

Date of Installation 22-Jul-09 Proposed

Drafted by S.Miller Date: Completion x

P.B.T.D. = 2037m Checked by Date: Suspended

Top Shot

27-Aug-09

Not to ScaleMike Troughton

String wt 18K. Set at 28K. Tbg in 10,000 lbs tension.

DescriptionLength Depth

(in)(m RT)(m)

Min ID

COMMENTS:

2

1

3

4

6

5

8

7

10-15

16

9

Figure 6: Completion Diagram

T22 17

4.0 FORMATION SAMPLING AND EVALUATION

4.1 MUD LOGGING

Mud logging services were provided by Geoservices Australasia from 229.5mRT to total

depth. The unit was to provide continuous 24-hour surveillance of drilling operations and

digital recording of drilling operations including:

Total gas detection Rate of Penetration

Chromatographic gas analysis Pump Stroke Rate

Measured depth Mud pit levels

WOB RPM

Pump Pressure Torque

Data was digitally recorded at 0.5m intervals from 229.5mRT to TD.

The mud loggers were responsible for time lagging, collection and description of drill

cutting from surface casing shoe to total depth. Routine microscopic and fluoroscopic

examination of ditch cuttings for hydrocarbon shows was undertaken.

A comprehensive 1:200 scale mud log was maintained from surface casing shoe to total

depth. Formation Integrity Tests, pit losses/gains, tight-hole, bit data, mud information

and survey data were recorded on the mud log.

A complete ASCII file containing metres drilled, rate of penetration, WOB, RPM, torque,

total gas, chromatograph gas analysis data (“Taylor-22 Mudlog Digital Data Ascii”) and a

hard-copy full mudlog as a pdf file (Enclosure 1) are included with this report.

Total gas detectors were calibrated so that 1% methane in air produced a chart deflection

of 50 units.

Calcium carbide lag checks were run on the direction of the Wellsite Geologist). Total

gas units and lag time (actual and calculated) were recorded on the mud log in minutes.

No carbides were run whilst evaluating prospective hydrocarbon zones.

4.2 DITCH CUTTINGS

Samples were taken at nominal 10m intervals from 230 – 1830mRTand at nominal 3m

intervals from 1830 to 20380mRT. Spot samples were taken on ROP breaks and gas

peaks. Samples retained by Mosaic and those delivered to QDME Exploration Data

Centre are as per Table 5.

Table 5: Ditch Cuttings Sample Sets

Set Size Sample Type Bag Recipient

A 500g Unwashed and Air dried Cloth Bag Mosaic

B 200g Washed and Air dried Minigrip plastic Mosaic

C 200g Washed and Air dried Minigrip plastic QDME

D 10g Washed and Air dried Samplex tray Mosaic

T22 18

4.3 WIRELINE LOGGING

Wireline logging from TD to surface was conducted by Weatherford Wireline Services.

The Loggers TD was 2037.05mRT which was 0.95m shallower than Drillers TD

(2038.0mRT). Analysis of electric logs is described in Section 5.4. Logs run were as per

Table 6. Digital LAS wireline log data (“Taylor-22 Wireline Digital Data LAS”) and

hard-copy wireline log plots (Enclosure 2) accompany this report.

Table 6: Wireline Logging Programme

COMPANY: Weatherford Wireline Services

RUN TOOL STRING INTERVAL

(mRT)

BHT /TIME SINCE

LAST CIRC.

1 GR-MDL-MMR-MSS-MPD-MDN-CAL 5 - 2036.20 * 79°C / 15.5hrs

* GR to surface through casing

4.4 DRILL STEM TEST

A DST was run in the Showgrounds Formation over the interval 1987 – 1997mRT to

confirm formation fluid due to ambiguous results from interpretation of wireline logs

(Appendix G) and to obtain pressure information. DST-1 was run as an inflate test in

Showgrounds Formation following wireline logging. GTS was recorded in 3 minutes.

During the main flow, surface pressure fluctuated between 500-900 psi for 65 minutes with

the well slugging condensate. Gas flow was estimated at 3 to 4 MMCFD. Approximately

20 litres of pale green condensate were reverse circulated at the end of the test. No water

was detected. A maximum temperature of 82°C and an initial shut-in pressure of 1732psi

were recorded during the DST.

The DST report is included in Appendix E.

4.5 CORING

Neither conventional coring nor sidewall coring were undertaken.

T22 19

5.0 WELL RESULTS

5.1 FORMATION TOPS

Formation tops were derived from wireline logs, sample cuttings and correlation with

offset well data. Description of sample cuttings commenced at 229.5mRT. All depths in

this section are referenced to Loggers depth which was 0.95m shallower than Drillers

depth at TD. Daily Geological Reports are included in Appendix F. A composite plot of

electric logs, mud log data and stratigraphy is included as Enclosure 3.

Table 7: Formations Tops

Prognosed Taylor- 22 Actual Difference

Depth Thickness Depth Thickness

mSS mRT m mSS mRT m m Hi/Low

RT -316.6 0 0 -316.7 0.0

GL -311.2 5.4 5.4 -311.3 5.4

Griman Creek

Surat Siltstone -75 242 131

Wallumbilla 56 373 206

Bungil 262 579 205 271.63 588.33 200.40 9.73L

Mooga Sandstone 467 784 154 472.03 788.73 158.30 5.03L

Orallo 622 938 135 630.33 946.93 116.61 8.93L

Gubberamunda 757 1074 162 746.94 1063.54 171.95 10.06H

Westbourne 919 1236 111 918.89 1235.59 113.00 0.11H

Springbok Sandstone 1030 1347 55 1031.89 1348.49 63.02 1.49H

Walloon Coal 1085 1402 196 1094.91 1411.51 175.98 9.91L

Hutton Sandstone 1281 1598 145 1270.89 1587.59 169.36 11.89H

Evergreen 1426 1742 38 1440.25 1756.95 101.13 14.25L

Boxvale Sandstone 1464 1780 62 1480.10 1796.80 16.10L

Moolayember 1526 1843 110 1541.38 1858.08 114.09 15.38L

Snake Creek Mudstone 1636 1953 18 1655.47 1972.17 17.13 19.47L

Showgrounds 1654 1971 10 1672.60 1989.30 6.72 18.60L

Bandanna Formation 1664 1981 13 1679.32 1996.02 11.78 15.32L

Kuttung 1677 1994 1691.10 2007.80 14.10L

TD (logger) 1717 2034 1721.3 2037.05

5.2 WELL STRATIGRAPHY

5.2.1 Wallumbilla Formation (surface casing shoe (229mRT) - 588.33mRT)

229-250m

Argillaceous Siltstone with minor interbedded silty Sandstone, pale grey, pale brown-

grey, very fine to fine, common silt sized quartz, subrounded to subangular, moderately

well sorted, calcareous in parts, trace coal, mica and lithics, firm to friable, tight to poor

porosity, no fluorescence.

250-280m

Arenaceous Siltstone with interbedded calcareous Sandstone, clear to translucent quartz,

pale grey aggregates, very fine to medium, generally fine, subangular, poorly sorted, weak

to moderate strong calcareous cement, carbonaceous in parts, local silty matrix grading to

T22 20

silty sandstone, disaggregated, poor inferred porosity, no fluorescence. Intergradational

silty Sandstone, very calcareous in parts.

280-340m

Predominantly massive Siltstone with minor intergradational silty Sandstone and

calcareous sandstone, as above.

340-370m

Predominantly MASSIVE SILTSTONE with minor intergradational silty sandstone and

calcareous sandstone. The SILTSTONE is dark to medium grey, argillaceous to minor

arenaceous grading to silty sandstone, slightly calcareous, with trace feldspar,

disseminated pyrite, fossil fragments, coal, mica and lithics, rare glauconite and is firm,

sub blocky to sub fissile. The SILTY SANDSTONE is pale grey, pale brown-grey, very

fine to fine, with common silt sized quartz, subrounded to subangular grains, moderately

well sorted, calcareous in parts, with trace coal, mica and lithics and is firm to friable,

tight to poor porosity with no fluorescence. The CALCAREOUS SANDSTONE is as

above.

370-470m

Predominantly MASSIVE SILTSTONE with thin dolomite, silty sandstone and

calcareous sandstone. The SILTSTONE is medium to light grey, argillaceous to minor

arenaceous grading to silty sandstone, carbonaceous in parts, slightly calcareous, with

trace glauconite and coal, firm to soft, sub blocky. The SILTY SANDSTONE is pale to

medium grey, very fine to silt sized translucent quartz, angular to subrounded, moderately

well sorted, with a strong to weak calcareous cement, local to common argillaceous

matrix, occasional glauconite grains, mica, feldspar, lignite and coal, trace lithics, and is

firm to moderately friable, tight to very poor inferred porosity with no fluorescence.

The CALCAREOUS SANDSTONE is pale grey, speckled grey/black/green, very fine to

occasionally fine translucent quartz, angular, moderately well sorted, with a strong

calcareous cement, common glauconite and carbonaceous fragments, occasional feldspar,

mica and disseminated pyrite, and is firm to moderately hard with tight inferred porosity

and no fluorescence.

DOLOMITE: greyish orange, micritic to crystalline, minor quartz grains, trace glauconite,

moderately hard to very hard, blocky.

470-588.33m

Predominantly MASSIVE SILTSTONE with thin interbedded silty sandstone and

calcareous sandstone and thin limestone at the base of the formation. SILTSTONE:

medium to occasionally dark grey, generally argillaceous and massive to occasionally

arenaceous and banded/laminated with very fine sandstone and having moderately strong

siliceous cement, is carbonaceous in parts, slightly calcareous, with trace glauconite, coal,

micro pyrite and micromica and is firm to hard and sub blocky.

The GLAUCONITIC and CALCAREOUS SILTY SANDSTONE is speckled green/grey,

very fine to fine with common silt sized translucent quartz and glauconite grains, grading

to arenaceous siltstone, with subangular to subrounded grains, moderately well sorted, a

weak to strong calcareous cement and local to common argillaceous matrix, trace mica,

feldspar, coal and lithics, and is firm to moderately friable, tight to very poor inferred

porosity with no fluorescence.

The CALCAREOUS SANDSTONE is pale grey, speckled grey/black/green, with very

fine to occasionally fine translucent quartz, angular, moderately well sorted, strong

calcareous cement, common glauconite and carbonaceous fragments, occasional feldspar,

mica and disseminated pyrite, firm to moderately hard, tight inferred porosity, no

fluorescence.

LIMESTONE: dark grey, patchy dark grey/translucent, crystalline calcite with calcareous

cemented siltstone, local very fine quartz grains, lithics, trace glauconite and is hard.

T22 21

5.2.2 Bungil Formation (588.33 – 788.73mRT)

588.3-640m

Predominantly CALCAREOUS SANDSTONE with intergradational calcareous silty

Sandstone, argillaceous Siltstone and minor micritic silty Limestone

CALCAREOUS SANDSTONE: off-white/pale grey aggregates, clear and translucent

quartz, very fine to fine becoming occasionally medium to locally coarse with depth,

angular-subangular, poorly sorted, weak to moderately strong calcareous cement, clean to

occasional silty and kaolinitic matrix grading to calcareous silty sandstone, glauconite,

feldspar and lithic grains, occasional coal laminae and debris, moderately hard to firm and

friable, poor to tight visual porosity, no fluorescence.

640-740m

Predominantly SILTY SANDSTONE with intergradational arenaceous siltstone and

sandstone and trace micritic silty dolomite.

SILTY SANDSTONE: patchy medium grey brown/off-white, very fine to fine with

common silt sized quartz grading to arenaceous siltstone, rounded to subangular,

moderately well sorted, weak to moderately strong siliceous and calcareous cement,

feldspar, glauconite, mica and lithics, moderately hard to firm and friable, tight visual


740-788.73m

Intergradational SILTY SANDSTONE, calcareous sandstone and siltstone

SILTY SANDSTONE: as above, poor to tight porosity, no fluorescence.

5.2.3 Mooga Sandstone (788.73 – 946.93mRT)

788.73-840m

Mainly SANDSTONE with intergradational silty sandstone and siltstone

SANDSTONE: white, pale grey, very fine to fine, occasionally medium and trace coarse,

angular to subrounded, moderately well sorted, weak to strong siliceous cement,

calcareous in parts, local kaolinitic matrix, generally clean aggregates, firm to friable,

poor to good visual porosity, no fluorescence.

840-900m

Interbedded and intergradational SILTY SANDSTONE, sandstone and siltstone

SILTY SANDSTONE: laminated and patchy off-white/medium to light brown, very fine

to fine, angular to subangular, well-sorted, weak siliceous and calcareous cement,

common brown silt matrix, local kaolinitic matrix, feldspar, mica, occasional coal

fragments, trace glauconite, firm to moderately hard, poor to tight visual porosity, no

fluorescence.

900-946.93m

Predominantly SANDSTONE with minor silty sandstone and siltstone

SANDSTONE: clear and translucent quartz, fine to very coarse – generally medium,

angular to subrounded, moderately well sorted, loose to local calcareous and silica

cemented aggregates, common kaolinitic matrix, minor coal and feldspar, friable to firm,

fair to poor inferred porosity, no fluorescence.

T22 22

5.2.4 Orallo Formation (946.93 – 1063.54mRT

946.93-980m

Arenaceous Siltstone with interbedded and intergradational SILTY SANDSTONE and

subordinate quartz sandstone

SILTY SANDSTONE: off-white, fine to medium, angular to subrounded, moderately

well sorted, slightly calcareous in parts, moderate strong to weak siliceous cement,

common to abundant kaolinitic matrix, minor feldspar and micromica, micro feldspar,

and micro coal inclusions,, local coal laminae and fragments, firm to moderately friable,

poor visual porosity, no fluorescence.

980-1020m

SANDSTONE with intergradational silty sandstone and trace micritic dolomite.

SANDSTONE: translucent, clear and common very pale yellow quartz, fine to very

coarse, trace granule and pebbles at base, rounded to angular, poorly sorted, generally

loose to occasionally firm aggregates, calcareous cement in parts, local kaolinitic matrix,

good to poor inferred porosity, no fluorescence.

1020-1040m

SILTSTONE with thinly interbedded silty sandstone and sandstone.

SILTSTONE: medium brown-grey, arenaceous, common very fine quartz grains grading

to silty sandstone in parts, local argillaceous matrix, minor coal laminae and fragments,

friable to firm.

1040-1063.54m

SANDSTONE with interbedded silty sandstone and siltstone.

SANDSTONE: as above, fair porosity, no fluorescence.

5.2.5 Gubberamunda Sandstone (1063.54 - 1235.59mRT)

1063.54 -1090m

MASSIVE SANDSTONE: translucent to clear quartz, trace igneous and metamorphic

lithics, fine to very coarse – predominantly medium, subrounded to sub angular, poorly

sorted, generally loose and clean to minor weak aggregates with kaolinitic matrix, good

inferred porosity, no fluorescence.

1090-1152m

MASSIVE SANDSTONE: translucent to clear quartz, trace igneous and metamorphic

lithics, fine to very coarse, occasionally granule and local pebble fragments,

predominantly medium, subrounded to sub angular, poorly sorted, generally loose and

clean to occasional weakly cemented aggregates with kaolinitic matrix, good inferred


1152-1194m

SANDSTONE with interbedded argillaceous and arenaceous siltstone.

SANDSTONE: as above predominantly medium to fine, clean, loose to minor moderately

hard aggregates with siliceous and rare pyritic cement, generally good inferred porosity,

no fluorescence.

1194-1235.59m

MASSIVE SANDSTONE: translucent to clear quartz, fine to very coarse, occasionally

granule, predominantly medium, subrounded to angular, poorly sorted, generally loose

and clean, minor weakly siliceous cemented aggregates with kaolinitic matrix, good


T22 23

5.2.6 Westbourne Formation (1235.59 - 1348.49)

1235.59-1263m

SANDSTONE with intergradational silty sandstone siltstone.

SANDSTONE: pale grey to off-white, very fine to fine, common silt sized quartz, angular

to subrounded, well-sorted, clean to local kaolinitic matrix grading to silty sandstone,

trace mica, feldspar and lithics, friable to occasionally firm, fair to poor visual porosity,

no fluorescence.

1263-1279m

Interbedded Siltstone, silty Sandstone and Sandstone.

1279-1310m

Siltstone with minor intergradational SILTY SANDSTONE.

SILTY SANDSTONE: off-white/pale grey, very fine grading to arenaceous siltstone,

subrounded to angular, well-sorted, weak to moderate strong siliceous and calcareous

cement, local to common kaolinitic matrix, occasional mica flakes and coal fragments,

firm to friable, poor visual porosity, no fluorescence.

1310-1348.49m

Increasing Siltstone with subordinate intergradational silty Sandstone and Sandstone

5.2.7 Springbok Sandstone (1348.49 - 1411.51mRT)

1348.49 - 1411.51m

Predominantly SANDSTONE with minor siltstone interbeds.

SANDSTONE: clear to occasionally translucent quartz, rare coloured lithics (volcanics),

fine to coarse – predominantly medium becoming very coarse to pebbly at base,

moderately well sorted, angular to subrounded, loose to occasional kaolinitic aggregates,

slightly calcareous in parts, good porosity, no fluorescence.

5.2.8 Walloon Formation (1411.51 - 1587.59mRT)

1411.51-1440m

Siltstone with interbedded silty Sandstone, SANDSTONE and thin Coal.

SANDSTONE: off-white/pale grey, generally clear to translucent quartz, very fine to

medium, angular to rounded, poorly sorted, weak to strong calcareous cement, kaolinitic

in parts, firm to moderately hard, poor visual porosity, no fluorescence.

COAL: black, banded vitreous and sub vitreous, smooth texture, blocky, brittle to

moderate firm.

1440-1457m

Silty Sandstone with intergradational arenaceous Siltstone and Sandstone and thin

carbonaceous Siltstone and Coal.

1457-1490m

Predominantly Siltstone with minor silty Sandstone and SANDSTONE interbeds and

trace Coal.

SANDSTONE: off-white/pale grey, generally clear to translucent quartz, very fine to

medium, angular to rounded, poorly sorted, weak to strong calcareous cement, kaolinitic

in parts, firm to moderately hard, poor visual porosity, no fluorescence.

1490-1519m

CALCAREOUS SANDSTONE with interbedded siltstone.

CALCAREOUS SANDSTONE: white/translucent aggregates, translucent to clear quartz,

very fine to fine, trace medium, rounded to angular, moderately well sorted, moderately

strong calcareous and subordinate siliceous cement, local to common kaolinitic matrix

T22 24

grading to silty sandstone, minor feldspar and lithics, firm to friable, poor to fair porosity,

no fluorescence.

1519-1540m

Mainly calcareous Sandstone, as above, with minor interbedded silty Sandstone, Siltstone

and carbonaceous Siltstone.

1540-1570m

Siltstone with minor intergradational silty Sandstone.

1570-1587.59m

Siltstone with interbedded calcareous Sandstone and minor intergradational silty

Sandstone.

5.2.9 Hutton Sandstone (1587.59 - 1756.95mRT)

1587.59-1637m

Massive SANDSTONE with minor Siltstone interbeds.

SANDSTONE: clear to translucent quartz, minor coloured lithic grains, fine to coarse –

generally medium, subangular to subrounded, poorly sorted, loose to local moderately

strong calcareous cement, generally good inferred porosity, no fluorescence.

SILTSTONE: greyish brown, arenaceous to occasionally argillaceous, common very fine

quartz grading to silty sandstone, occasional lignite, coal, mica and feldspar, friable to

firm.

1637-1652m

Siltstone with interbedded SANDSTONE.

CALCAREOUS SANDSTONE: pale grey, pale to medium grey-brown, fine to very fine,

angular to subrounded, moderately well sorted, weak to strong calcareous cement, local

kaolinitic matrix grading to silty sandstone, common coal partings and fragments, mica,

trace lignite, feldspar and lithics, friable to firm, fair to poor porosity, no fluorescence.

SANDSTONE: medium grey-brown, light grey, very fine to occasionally fine grading to

arenaceous siltstone, rounded to angular, moderately well sorted, moderate strong

siliceous cement, slightly calcareous in parts, feldspar, lithics, minor coal fragments,

micaceous in parts, firm to friable, poor to tight visual porosity, no fluorescence.

1652-1670m

SANDSTONE: clear to translucent quartz, minor coloured lithic grains, fine to very

coarse – generally medium, subangular to subrounded, poorly sorted, loose to local

moderately strong calcareous cement, generally good inferred porosity, no fluorescence.

1670-1680m

Interbedded Siltstone, silty Sandstone and minor Sandstone.

1680-1700m

SANDSTONE: clear to translucent quartz, minor coloured lithic grains, fine to very

coarse – generally medium, subangular to subrounded, poorly sorted, loose to local

moderately strong calcareous cement, generally good inferred porosity, no fluorescence.

1700-1731.5m

Calcareous Sandstone with minor Siltstone and silty Sandstone interbeds.

1731.5-1744m

Intergradational Sandstone and silty Sandstone with minor Siltstone.

1744-1756.95m

Finely laminated SANDSTONE, silty sandstone and arenaceous siltstone.

SANDSTONE: clear to white aggregates, clear to translucent quartz, minor coloured

lithics, very fine to medium – generally fine, rounded to subangular, moderately well

sorted, weak siliceous and calcareous cement, friable to firm, fair to poor visual porosity,

no fluorescence.

T22 25

5.2.10 Evergreen Formation (1756.95 - 1858.08mRT)

1756.95-1788m

Thinly interbedded CALCAREOUS SANDSTONE, SANDSTONE, intergradational silty

Sandstone, Siltstone and minor Claystone

CALCAREOUS SANDSTONE: mottled pale – medium grey/white, fine to medium,

angular to rounded, moderately well sorted, strong to weak calcareous cement, common

kaolinitic matrix and local siltstone clasts grading to silty sandstone, mica, feldspar, coal

and lithics, hard to moderately hard, tight to poor porosity, no fluorescence.

SANDSTONE: brownish grey, fine to very fine, rounded to angular, moderately well

sorted, strong to weak siliceous cement, silty matrix in parts, common feldspar and

lithics, hard to moderately friable, tight to poor visual porosity, no fluorescence.

1788-1796.08m

Predominantly Siltstone with minor silty Sandstone and Sandstone.

Boxvale Sandstone Member( 1796.80 - 1813.50mRT)

1796.80 -1800m

Siltstone with interbedded CALCAREOUS SANDSTONE and SILTY SANDSTONE.

CALCAREOUS SANDSTONE: off-white/pale grey aggregates, translucent to clear

quartz, fine to medium, angular to subrounded, poorly sorted, strong to weak calcareous

cement, silty matrix in parts, hard to moderately hard, tight porosity, no fluorescence.

SILTY SANDSTONE: medium to brown-grey, dark grey, very fine grading to arenaceous

siltstone, angular to subangular, moderately well sorted, weak siliceous cement, local to

common silty matrix, mica, feldspar, coal and lithics, firm to friable, poor to occasionally

fair porosity, no fluorescence.

1800-1813.5m

Predominantly calcareous Sandstone with minor intergradational silty Sandstone and

Siltstone.

1813.5-1814m

COAL with associated carbonaceous Siltstone.

COAL: black, vitreous to minor sub vitreous, conchoidal fracture surfaces, smooth,

blocky, hard to brittle.

1814-1826m

Intergradational silty Sandstone and SANDSTONE with minor interbedded Siltstone.

SANDSTONE: clear to translucent quartz, fine to coarse and occasionally very coarse,

angular to subangular, poorly sorted, strong to weak siliceous cement, clean aggregates to

kaolinitic in parts, hard to moderately friable, tight to poor visual porosity, no

fluorescence.

1826-1833m

SANDSTONE: translucent pale brown, very fine to fine to occasionally medium, rounded

to subangular, moderately well sorted, weak siliceous cement, clean to silty in parts,

friable to firm, good to poor visual porosity, no fluorescence.

CALCAREOUS SANDSTONE: white/translucent aggregates, translucent to clear quartz,

fine to coarse – generally medium, moderately strong to weak calcareous cement, local

feldspar, kaolinitic matrix in parts, moderately hard to friable (abundant rock flour), poor


1833-1840m

Intergradational silty Sandstone and Siltstone.

1840-1858.08m

T22 26

SANDSTONE: clear to translucent quartz, occasionally frosted, fine to coarse with very

coarse to granule sized grains at base -generally medium, weak to moderately strong

silica cement, slightly calcareous in parts, occasional kaolinitic matrix, generally

disaggregated, good inferred porosity, no fluorescence.

5.2.11 Moolayember Formation (1858.08 - 1972.17)

1858.08-1884m

Siltstone, occasionally dolomitic, with finely interbedded argillaceous silty Sandstone and

calcareous Sandstone.

1884-1890m

Three thinly stacked CALCAREOUS SANDSTONES with intervening Siltstone.

CALCAREOUS SANDSTONE: mottled to patchy medium grey/white/translucent

aggregates, common frosted quartz, grey lithics and cream feldspar grains, fine to

medium, subrounded-sub angular, strong to weak calcareous cement, kaolinitic matrix in

parts, firm to moderately hard, poor inferred and visual porosity, no fluorescence.

1890-1909.5m

Calcareous Sandstone with interbedded Siltstone.

1909.5-1929m

Predominantly calcareous Sandstone with intergradational silty Sandstone and

subordinate interbedded Siltstone.

1929-1940m

Mainly Siltstone with minor silty Sandstone and Sandstone.

1940-1964m

Predominantly Sandstone and calcareous Sandstone with intergradational silty Sandstone

and subordinate interbedded Siltstone.

1964-1972.17m

Mainly SANDSTONE with minor SILTY SANDSTONE and SILTSTONE interbeds.

CALCAREOUS SANDSTONE: pale to dark grey, minor brownish black where silty,

very fine to occasionally fine, angular to subrounded, well-sorted, strong calcareous

cement, common microcarbonaceous matter, occasional mica and feldspar, moderately

hard to hard, tight to poor visual porosity, no fluorescence.

SANDSTONE: grey/off-white aggregates, translucent to clear quartz, very fine to fine,

subrounded to rounded, well to moderately well sorted, weak siliceous cement,

occasional kaolinitic and silty matrix grading to silty sandstone, friable to firm, poor

visual porosity, no fluorescence.

SILTY SANDSTONE: as above calcareous in parts, poor porosity, no fluorescence.

SILTSTONE: brownish grey, minor brown/black, finely arenaceous, strong siliceous

cement, micro coal, micromica, hard, blocky.

5.2.12 Snake Creek Mudstone (1972.17 - 1989.30mRT)

Predominantly massive SILTSTONE with minor intergradational silty Sandstone units

SILTSTONE: dark brownish black, occasional brown-grey, arenaceous grading to silty

sandstone in parts, massive to occasionally laminated, common micromica, micro coal,

trace feldspar and lithics, moderately hard, blocky to occasionally sub fissile.

5.2.13 Showgrounds Formation (1989.30 - 1996.02mRT)

Thinly interbedded SANDSTONE with minor intergradational silty Sandstone and

Siltstone

T22 27

SANDSTONE: clear/pale grey aggregates, clear to translucent quartz, very fine to coarse,

generally medium to coarse, rounded to angular, moderately well sorted in parts, friable

to firm, generally clean, good porosity, no fluorescence.

SILTY SANDSTONE: pale grey, very fine grading to arenaceous siltstone, clean to local

mica, firm to hard, poor visual porosity, no fluorescence.

SILTSTONE: pale grey, arenaceous to siliceous, sucrosic texture in parts, common very

fine quartz, micromica, generally clean, firm, occasionally sub fissile to friable.

1992-1996m

SANDSTONE: clear to translucent and milky white quartz, minor pale brown stained

quartz, very fine to very coarse and granule – gem medium to coarse, subrounded to

subangular, poorly sorted, generally clean, loose, good inferred porosity.

FLUORESCENCE: TRACE SHOW from 1995-1998.55m. Maximum gas peak: 150

units.

5.2.14 Bandanna Formation (1996.0 - 2007.80mRT)

SILTSTONE: moderate dark yellowish brown, arenaceous to siliceous, crystalline to

sucrosic texture, occasional clear very fine quartz grains, platy to bladed cuttings, brittle

to moderately hard.

COAL OVERLYING CARBONACEOUS SILTSTONE__

COAL: black, banded vitreous to sub vitreous, conchoidal to subconchoidal, hackly to

smooth, local disseminated pyrite, occasional pyrite microlaminae, blocky to bladed, firm

to brittle.

CARBONACEOUS SILTSTONE: black/grey, dark brown, arenaceous to argillaceous,

common coal fragments, micaceous in parts, blocky, hard to firm.

5.2.15 Basement (2007.8 - 2038mRT Total Depth)

METASANDSTONE WITH MINOR INTERBEDDED SILTSTONE__

METASANDSTONE: varicoloured light to medium yellow brown, moderate yellow

brown, white, off-white, pale green-grey quartzite and meta sandstone fragments showing

fine to medium sized welded and silicified aggregates, very poorly sorted, generally had,

tight inferred porosity, no fluorescence.

SILTSTONE: medium to light yellow brown, argillaceous to arenaceous, shaley in parts,

minor coal fragments and specks, micromica in parts, trace pyrite, firm to friable,

occasionally hard.

CALCAREOUS META TUFF: varicoloured opaque to occasionally translucent

white/off-white/very pale grey/minor pale green-grey, crystalline texture, relic foliation,

occasional red to black volcanic inclusions, local clear angular quartz grains, very

calcareous, shaley, hard to brittle, minor soft.

META TUFF: predominantly opaque to occasionally translucent dark to medium yellow

brown, occasionally brown black, crystalline to sucrosic texture in parts, common satin

sheen, non-calcareous, local red, black, pale green rectangular to irregular inclusions,

trace foliation, platy to ta cuttings, hard to brittle.

5.3 HYDROCARBON INDICATIONS

Table 8 summarises fluorescence descriptions and gas shows in the well. Mudlog gas

data are displayed in Enclosure 1.

T22 28

Table 8: Summary of Hydrocarbon Indications in Cuttings

INTERVAL DESCRIPTION

1430-1490mRT

Walloon CM Peak Gas 60 units/ Background 3 units. 80/8/8/4/tr

1490-1560mRT

Walloon CM Peak Gas 60 units/ Background 3 units. 79/8/8/4/1

1910-1925mRT

Moolayember Fm Peak Gas 60 units/ Background 15 units. 84/8/4/3/1, sandstone

1925-1940mRT

Moolayember Fm Peak Gas 25-17 units, 84/9/5/2

1990-1992mRT

Showgrounds Fm Peak Gas 60 units/Background 30 units. 72/12/6/8/2. Top of Showgrounds Fm

1992-1996mRT

Showgrounds Fm

Peak Gas 150 units/ Background 60 units. 72/12/6/8/2. Middle Showgrounds Fm.

TRACE SHOW (1995-1998.5mRT): dull yellow, even, very weak diffuse pale

yellow cut, weak crush cut, thin pale yellow ring residue from very fine tight sst.

1998.5-2007.5mRT

Bandanna Fm Peak gas 120 units, decreasing to 30 units. 90/8/2, coal peak

5.4 PETROPHYSICAL INTERPRETATION

The Showgrounds Formation sandstone encountered in Taylor-22 has a gross thickness of

6.72 metres with net porous sand totalling 3.8 metres with an average effective porosity

of 15.95%. Net sand cut-offs used were 5.5% porosity and 30% Vsh. Although the

Showgrounds Sandstone intersected a gas column, the effective water saturation was not

low enough for the sand to contain „pay‟, based on an Swe cut-off of 50%. It is assumed

that the higher than expected water saturations is a result of the reservoir being partially

depleted by adjacent wells(s).

The Petrophysical interpretation report and plot are included in Appendix G.

6.0 WELL POST MORTEM

Taylor-22 was drilled in an embayment mapped on the southern margin of the Taylor

structure to test the Mid-Triassic Showgrounds Formation sandstone. Formation tops

were encountered mostly low to prognosis. The Showgrounds Formation sandstone was

prognosed to be intersected in Taylor-22 at 1654mSS, approximately 24 metres high to

Taylor-10. Wireline logs from Taylor-22 indicated the top Showgrounds Formation was

intersected 18.6 metres low to prognosis, at 1672.6mSS. The Showgrounds Formation

encountered in Taylor-22 is 6.72 metres thick and is sealed by the Snake Creek Mudstone

with a drilled thickness of 17.13 metres.

Top porosity in Taylor-22 was encountered at 1674.05mSS, 5.15 metres high to Taylor-

10 (1679.2mKB). Log analysis and mudlog gas shows indicated the Showgrounds

Sandstone in Taylor-22 to be gas-bearing however the results of the log analysis were

ambiguous, indicating no pay based on a pay cut-off of 50%. DST-1 was therefore run

over the interval 1987 – 1997mRT (1670.3 – 1680.3mSS) to confirm formation fluid and

flowed gas to surface at an estimated rate of 3 – 4 MMcf/d with no water.

Taylor-22 was perforated over the interval 1990.50-1992.25mRT (1673.80 –

1675.55mSS) and connected to the Taylor field gathering system.

T22 29

Post-drill depth mapping and a well-tie for Taylor-22 are shown in the following Figures

8 & 9.

Figure 8: Top Showgrounds Formation Depth Structure Map

T22 30

Figure 9: Taylor-22 Post-drill Well Tie - Seismic Line 85B-72 (2009 Reprocessing)

7.0 REFERENCES

MOSAIC, 2009, Drilling and Geological Program, Taylor- 22, PL 16, Surat Basin, Queensland.

Mosaic Oil Qld Pty Ltd, unpublished report.

THOMAS et al, 1982. Hydrocarbon Habitat of the Surat/Bowen Basin. Australian Petroleum

Exploration Association Journal 22, 213 – 216.

T22 31

APPENDIX A

WELL SURVEY PLAN

T22 32

APPENDIX B

DAILY DRILLING REPORTS

WELL 24:00 MD/ TVD DRILLED 216m 12

RIG MB Century # 7 FORMATION $310,389 CUM.

LAST CASING 406mm 16.0'' SET AT 10.0m LOT MAASP BOP TEST NIL DUE

WEATHER: DayNight

BHA # 1 MUD PROPERTIES OPERATION HRS CUMWOB(Klb) 5-15 JET V(fps) 215 TOOL Mud Type 12.00 156.00

RPM 145 H S I 1.19 Bit - Tri Cone Depth (m) 142 11.00 11.00BIT NUMBER RR1 A Bit Sub w/- Float Density (ppg) 8.70Size (inches) 12.25 12.25 Drill Collar- 8" ECD (ppg) 8.81Make Reed Conductor Stabiliser Temp (° C) 32Type EHT11G Crossover Sub Viscosity (sec) 39IADC Code 117 Drill Collar- 6 1/2" PV / YP (cp/lb) 7 / 16Serial Number CL4809 Heavy Weight DP Gels (10s/m) 8 / 11T.F.A. (in) 0.994 API Filt. (cc)Depth In (m) 10 Sand (% Vol) 0.3Depth Out (m) IN 10 KCl (%) 0.50 0.50Total Meters 216 10 pH (strip) 9.0 0.50 0.50

11 | 11 0 | 0 LGS %/Vol 2.6ROP IADC | OnBtm 19.6 | 19.6 Chlorides (ppm) 400Condition Out

FLOW DATARATE (gpm/lps) 666 42.0AV - DP (fpm/mpm) 126 38AV - DC (fpm/mpm) 147 45SPP (psi/atm) 950 65SPP (Calculated) 570 39

PUMP DATA 1STROKE 8.5'' 40

RATE 110 SURVEYS: MD | INC˚ | AZ˚ TOTALS 24.00 12.00LINER 6.0'' 0.50 0.50

STROKE 8.5''RATE 110 DIESEL (L) 1500 23600LINER 6.0'' BARITE (T)

STROKE DRILL WATERRATELINER

HOURLY OPERATIONS SUMMARY 0000 to 2400From To [IADC Code] Description0:00 3:303:30 7:30

7:30 11:30

11:30 12:0012:00 16:3016:30 17:0017:00 20:0020:00 20:3020:30 0:00

HOURLY OPERATIONS SUMMARY 0000 to 0600 on 27/06/090:00 0:300:30 1:001:00 1:301:30 3:303:30 4:304:30 6:00

MAXIMUM GAS: BACKGROUND GAS: CONNECTION GAS: % TRIP GAS: %SUPERVISOR: GEOLOGIST: RIG MGR:

DAILY DRILLING REPORT REPORT # 001 26/06/2009SPUD: 26/06/2009 DAY # 007

Taylor 22 226m BRT AFE DAYS / COST $1,317,320

Rain Periods390 Days 2. Running in Drill Collars. Light Showers

Griman Creek DAILY COST $346,839

DAILY OP'SSUMMARY

Continue to drill rat hole and mouse hole. General rig up. Final inspection. Test ESD's from Rig Floor and Muster Point. Hold pre spud meeting. Spud Taylor # 22 @ 12:00hrs. Drill ahead 12 1/4" hole w/- survey to 226m. Electrical shut down due to fault with Desander.

FORECAST OP'S Drill ahead to Top Hole TD @ 229m. POOH. Rig up and run 9 5/8" Casing. Cement 9 5/8" Casing. N/U and test 13 5/8" BOP's. Make up 7 7/8" BHA.

BIT INFORMATIONLENGTH Gel 1 Move/ Rig Up/Down

0.32 220 2 Drilling

LAST L.T.I.SAFETY 1. Drilling rat hole/mouse hole.

1.52 32 5 Circ & Condition0.38 39 6 Tripping- Bit / Casing

1.00 8.80 3 Wash / Ream9.01 8.91 4 Coring

6.3 Handle BHA0.3 7 Service / Slip Line

108.38 7 / 16 6.1 Tripping- Other55.26 8 / 11 6.2 Wiper Trip

Hours IADC | OnBtm 2.6 11 Logging400 12 RU for Csg / Cmt

8 Repairs9.0 10 Survey

Surface Vol. (Bbls) 270 12.1 Run CasingBHA LENGTH 175.87 Hole Vol. 92 12.2 CementingBHA WEIGHT 35.21 Mud Mixed 380 13 Wait on CementSTRING WT 37.90 New Hole Drilled 103.3 14 BOP's / WellheadHOOK LOAD 45.00 Downhole Losses 15 Test BOP / FormationWT BELOW JARS Surface Losses 7 16 Drill Stem Test

#1: National 8-P-80 TORQUE: ON | OFF Caustic Soda 1 21.1 Other

HOURS: JAR | SHK CHEMICAL USAGE 19 Tight hole / FishingDRAG: UP | DOWN 1 Aus-Gel (Aust) 84 21 Well Control

NON PRODUCTIVE#2: National 8-P-80 66 | 0.3 | 0 0 | 0 | 0 PRODUCTS: USED | REC | ON SITE

0 | 0 | 0 0 | 0 | 0

224 | 0.8 | 0 0 | 0 | 00 | 0 | 0 0 | 0 | 00 | 0 | 0 0 | 0 | 00 | 0 | 0 0 | 0 | 0 DAILY MUD COSTS $1,081.270 | 0 | 0 0 | 0 | 0 CUM. MUD COSTS $1,081.27

[ 2 ] Drill ahead 12 1/4" hole F/- 78m T/- 135m. (WOB = 5 - 15 / RPM = 140 / GPM = 660)[ 8 ] NPT- Complete Electrical shut down on rig. Shut pumps down and work pipe. Trouble shoot problem - Desander motor trip power out.[ 2 ] Drill ahead 12 1/4" hole F/- 135m T/- 226m. (WOB = 5 - 15 / RPM = 140 / GPM = 660)

[ 1 ] Continue to drill rat hole and install kelly sock.[ 1 ] Drill mouse hole and install sock.

[ 1 ] Pressure test surface lines 2000psi - good. Run geolograph and survey lines. Make up survey barrel. Final inspection, complete pre spud check list.

[ 1 ] Function test ESD's from rig floor and muster point - All good. Hold pre spud meeting with all site personel.[ 2 ] Spud TAYLOR # 22 @ 12:00hrs. Drill ahead 12 1/4" hole F/- 10m T/- 78m[ 10 ] Circulate. Run wireline survey @ 66m - 1/4 Deg.

Continue to drill ahead 12 1/4" hole F/- 226m T/- 229m Casing Point.Circulate hole clean, reciprocate pipe.Flow check, run wire line survey @ 224m - 3/4 Deg.POOH to run 9 5/8" casing F/- 229m T/- RT.

% @ m %M Troughton/M McMeniman Agus Nugroho

Break out bit # 1, lay out 12 1/4" string stab, bit sub and 8" DC.Rig up to run 9 5/8" casing. Hold Pre Job Safety Meeting.

POB-27: Mosaic - 2, Century - 19, ESS - 3, Geoservice - 2, RNM - 1 324 HrsRECEIVED: DISPATCHED:



LAST CASING 244mm 9.625'' SET AT 226.8m LOT MAASP BOP TEST NIL DUE

WEATHER: DayNight

BHA # 1 MUD PROPERTIES OPERATION HRS CUMWOB(Klb) 5-15 JET V(fps) 215 TOOL Mud Type 156.00

RPM 145 H S I 1.20 Bit - Tri Cone Depth (m) 229 0.50 11.50BIT NUMBER RR1 A Bit Sub w/- Float Density (ppg) 8.80Size (inches) 12.25 12.25 Drill Collar- 8" ECD (ppg) 8.98Make Reed Conductor Stabiliser Temp (° C) 32 1.00 1.00Type EHT11G Crossover Sub Viscosity (sec) 39 2.00 2.00IADC Code 117 Drill Collar- 6 1/2" PV / YP (cp/lb) 7 / 16Serial Number CL4809 Heavy Weight DP Gels (10s/m) 8 / 11T.F.A. (in) 0.994 API Filt. (cc) 1.00 1.00Depth In (m) 10 Sand (% Vol) 0.3Depth Out (m) 229 10 KCl (%) 0.50Total Meters 219 10 pH (strip) 9.0 0.50 1.00

11.5 | 11.5 0 | 0 LGS %/Vol 2.6ROP IADC | OnBtm 19 | 19 Chlorides (ppm) 400 3.50 3.50Condition Out 4.00 4.00

FLOW DATA 1.00 1.00RATE (gpm/lps) 666 42.0 4.00 4.00AV - DP (fpm/mpm) 126 38 4.50 4.50AV - DC (fpm/mpm) 147 45SPP (psi/atm) 950 65SPP (Calculated) 570 39

PUMP DATA 1STROKE 8.5'' 40 2.00 2.00

RATE 110 SURVEYS: MD | INC˚ | AZ˚ TOTALS 24.00 36.00LINER 6.0'' 0.50



HOURLY OPERATIONS SUMMARY 0000 to 2400From To [IADC Code] Description0:00 0:300:30 1:001:00 1:301:30 3:303:30 4:304:30 7:007:00 11:0011:00 11:3011:30 13:3013:30 14:30

14:30 15:30

15:30 19:3019:30 21:0021:00 22:0022:00 0:00

HOURLY OPERATIONS SUMMARY 0000 to 0600 on 28/06/090:00 6:00




Shower Clearing391 Days 2. Nipple up BOP's. Scattered Cloud

Griman Creek DAILY COST $454,883

DAILY OP'SSUMMARY

Continue to drill ahead 12 1/4" hole to 229m. POOH to run 9 5/8" casing. Rig up to run casing. Run 19 jnts of 9 5/8" casing, problems with getting MB Century's casing tong to bite. Circulate and reciprocate casing while waiting for conditions to dry out enough to get Halliburton onto location. Cement 9 5/8" casing. Wait on cement. Slack off, lay out landing joint. Install a 11" 3K Braiden head. Nipple up 13 5/8" BOP's.

FORECAST OP'S Continue to N/U BOP's. Test BOP's. Make up 7 7/8" drill assembly. Drill out. FIT. Drill ahead 7 7/8" production hole with surveys.

BIT INFORMATIONLENGTH KCl PHPA 1 Move/ Rig Up/Down

0.32 2 Drilling

LAST L.T.I.SAFETY 1. Rack back drill collars on rig floor.

1.52 5 Circ & Condition0.38 30 6 Tripping- Bit / Casing

1.00 8.65 3 Wash / Ream9.01 8.83 4 Coring

6.3 Handle BHA7 Service / Slip Line

108.38 6.1 Tripping- Other55.26 6.2 Wiper Trip


6.0 8 Repairs9.5 10 Survey

2 2 WT A E 0 ER TD Surface Vol. (Bbls) 500 12.1 Run CasingBHA LENGTH 175.87 Hole Vol. 42 12.2 CementingBHA WEIGHT 35.15 Mud Mixed 500 13 Wait on CementSTRING WT 37.99 New Hole Drilled 1.4 14 BOP's / WellheadHOOK LOAD 45.00 Downhole Losses 15 Test BOP / FormationWT BELOW JARS Surface Losses 269 16 Drill Stem Test

#1: National 8-P-80 TORQUE: ON | OFF PHPA 2 21.1 Other

HOURS: JAR | SHK CHEMICAL USAGE 19 Tight hole / FishingDRAG: UP | DOWN 1 Caustic Soda 1 21 Well Control

NON PRODUCTIVE#2: National 8-P-80 PRODUCTS: USED | REC | ON SITE

Potassium Chloride ** 210224 | 0.8 | 0 Sodium Sulphite 4

DAILY MUD COSTS $11,560.17CUM. MUD COSTS $12,641.44

[ 12.1 ] Make up 1 joint shoe track and float, run 19 joints of 9 5/8" casing as per program. Problems with getting casing tong to bite.[ 5 ] Install circulating swedge to landing Jnt and wash casing down. [ 21.1 ] NPT- Circulate and reciprocate casing. Wait on Halliburton due wet condition of lease and access road. [ 12 ] Rig up cement lines. Hold pre job safety meeting with Halliburton. Rig up cement head, pump 10 bbl spacer, test lines 2000psi - All Good. [ 12.2 ] Pump 5 bbl spacer. Mix and pump 58bbl of 15.6ppg cement. Drop Plug. Displace with 54bbls of H2O. Bump plug @ 310 psi and pressure up to 1200psi and hold 10 min. Bleed off, floats holding.[ 13 ] Wait on Cement. Rig down cement head and lines. Drain and flush riser. Lift riser and cut conductor.

[ 2 ] Continue to drill ahead 12 1/4" hole F/- 226m T/- 229m Casing Point.[ 5 ] Circulate hole clean, reciprocate pipe.[ 10 ] Flow check, run wire line survey @ 224m - 3/4 Deg.[ 6 ] POOH to run 9 5/8" casing F/- 229m T/- RT. [ 6.3 ] Break out bit # 1, lay out 12 1/4" string stab, bit sub and 8" DC.[ 12 ] Rig up to run 9 5/8" casing. Hold Pre Job Safety Meeting.

Continue to Nipple Up 13 5/8" BOP's, and choke line. Hook up Koomey lines.

[ 14 ] Slack off casing. Back out landing Jnt and lay out same. Lay out riser.[ 14 ] Install 11" 3K braiden head and torque up.[ 14 ] Install 11" 3K to 13 5/8 5K DSA. Nipple up spacer spool and 13 5/8" BOP's.

% @ m %M Troughton/M McMeniman Agus Nugroho

POB-27: Mosaic - 2, Century - 19, ESS - 3, Geoservice - 2, RNM - 1 648 HrsRECEIVED: 1 x Wood Group 11" 3k A Section. 1 x 7 7/8" PDC Bit. DISPATCHED:



LAST CASING 244mm 9.625'' SET AT 226.8m LOT MAASP BOP TEST 28/06 DUE 12/07

WEATHER: DayNight


RPM 130 H S I 2.97 Bit - PDC Depth (m) 229 6.00 17.50BIT NUMBER 2 RR1 Bit Sub w/- Float Density (ppg) 8.65Size (inches) 7.875 12.25 Drill Collar- 6 1/2" ECD (ppg) 8.93Make Reed Reed Stabiliser Temp (° C) 23 1.00Type DSX519M-C1 EHT11G Drill Collar- 6 1/2" Viscosity (sec) 31 1.50 3.50IADC Code M222 117 Heavy Weight DP PV / YP (cp/lb) 4 / 6Serial Number 123283 CL4809 Gels (10s/m) 2 / 3T.F.A. (in) 0.638 0.994 API Filt. (cc) 1.00 2.00Depth In (m) 229 10 Sand (% Vol)Depth Out (m) IN 229 KCl (%) 6.0 0.50 1.00Total Meters 111 219 pH (strip) 9.5 1.00

6 | 3 11.5 | 11.5 LGS %/Vol 0.1ROP IADC | OnBtm 18.5 | 37.2 19 | 19 Chlorides (ppm) 34000 3.50Condition Out 4.00

FLOW DATA 1.00RATE (gpm/lps) 503 31.7 4.00AV - DP (fpm/mpm) 295 90 6.00 10.50AV - DC (fpm/mpm) 537 164 9.00 9.00SPP (psi/atm) 650 44SPP (Calculated) 670 46

PUMP DATA 1STROKE 8.5'' 50 2.00

RATE 83 SURVEYS: MD | INC˚ | AZ˚ TOTALS 24.00 60.00LINER 6.0'' 0.50 1.00



HOURLY OPERATIONS SUMMARY 0000 to 2400From To [IADC Code] Description0:00 6:00

6:00 9:30

9:30 10:30

10:30 14:30

14:30 15:3015:30 17:0017:00 18:3018:30 19:0019:00 22:30

22:30 23:00

23:00 0:00

HOURLY OPERATIONS SUMMARY 0000 to 0600 on 29/06/090:00 6:00




Fine392 Days 2. Pressue test BOP's. Fine/Cool

Wallumbilla Formation DAILY COST $547,558

DAILY OP'SSUMMARY

Continued to Nipple Up BOP's. Pressure test BOP's, kelly, stabbing valves and surface lines. Make up 7 7/8" assembly. RIH. Tag TOC @ 213m. Drill out float, cement and shoe. Clean out rat hole and drill ahead 3m of new hole to 232m. Circulate hole clean. Run FIT - 15.3 EMW. Drill ahead 7 7/8" hole T/- 340m. Problem with Bails hitting Derrick, bails had to be remove.

FORECAST OP'S Continue to drill ahead 7 7/8" production hole T/- 1700m +/-. Wiper Trip. Drill ahead to Showgrounds Formation and on to TD.

BIT INFORMATIONLENGTH KCl PHPA 1 Move/ Rig Up/Down

0.24 330 2 Drilling

15.4 EMW 260psiLAST L.T.I.

SAFETY 1. Picking up BOP's.


0.79 8.75 3 Wash / Ream9.08 9.03 4 Coring


55.26 4 / 6 6.1 Tripping- Other2 / 3 6.2 Wiper Trip



2 2 WT A E 0 ER TD Surface Vol. (Bbls) 390 12.1 Run CasingBHA LENGTH 184.09 Hole Vol. 61 12.2 CementingBHA WEIGHT 35.09 Mud Mixed 13 Wait on CementSTRING WT 43.45 New Hole Drilled 21.9 14 BOP's / WellheadHOOK LOAD 51.00 Downhole Losses 15 Test BOP / FormationWT BELOW JARS Surface Losses 88 16 Drill Stem Test

#1: National 8-P-80 TORQUE: ON | OFF 20 PHPA 2 21.1 Other

HOURS: JAR | SHK CHEMICAL USAGE 19 Tight hole / FishingDRAG: UP | DOWN 2 AMC Defoamer 1 21 Well Control

NON PRODUCTIVE#2: National 8-P-80 PRODUCTS: USED | REC | ON SITE

SCR: 120 @ 60 Stks Potassium Chloride ** 28DEPTH: 244m 224 | 0.8 | 0 Xan-Bore 4

SCR: 120 @ 60 StksDEPTH: 244m

DAILY MUD COSTS $3,348.31DEPTH: 244m CUM. MUD COSTS $15,989.75

[ 2 ] Drill out cement, float and shoe track. Clean out rat hole T/- 229m. Change over to new mud while drilling F/- 229m T/- 232m.[ 15 ] Circulate hole clean. Confirm even mud weight @ 8.65ppg. Run FIT 260psi w/- 8.65ppg = 15.3 EMW.[ 2 ] Drill ahead 7 7/8" hole F/- 232m T/- 321m. (WOB = 5 - 8 / RPM = 80 - 100 / GPM = 500)[ 8 ] NPT- Bail struck derrick during a connection, bail hanging over beam in derrick, unable to come down. Send man up derrick to push bail around clear of beam to allow blocks to be lowered. Inspect derrick, no damage. Remove bails.[ 2 ] Drill ahead 7 7/8" hole F/- 321m T/- 340m. ( WOB = 5 - 8 / RPM = 100 - 120 / GPM = 500)

[ 14 ] Continue to Nipple Up 13 5/8" BOP's, and choke line. Hook up Koomey lines. Install bell nipple.[ 15 ] Pick up kelly, make up side entry sub. Pressure test surface lines and valves, Upper and Lower Kelly cock, FOSV and Grey Valve 200/2200psi 5/10min -Ok.

[ 15 ] Make up cup tester, atempt to test Braiden head, cup tester leaking. Lay out cup tester, close bind rams and test against casing 1500 psi 10 min - Ok.

[ 15 ] Make up test plug and test Pipe rams, Blind rams, kill line valves, HCR and manual valve, choke line 250/2200psi 5/10min. Test Annular 250/1500psi 5/10min - All Good.[ 6.3 ] Make up bit sub with float, 7 7/8" bit and 7 7/8" string stab @ 10m. [ 6 ] RIH with bit # 2 to 210m. Wash down and tag TOC @ 213m.

Drill ahead 7 7/8" hole F/- 340m T/- 495m (WOB = 5 - 8 / RPM = 100 - 130 / GPM = 500)

.3% @ 335m .152%M Troughton/M McMeniman Les Burgess Agus Nugroho

POB-27: Mosaic - 2, Century - 19, ESS - 3, Geoservice - 2, RNM - 1 972 HrsRECEIVED: DISPATCHED:



LAST CASING 244mm 9.625'' SET AT 226.8m LOT MAASP BOP TEST 28/06 DUE 12/07

WEATHER: DayNight


RPM 120 H S I 3.06 Bit - PDC Depth (m) 534 23.00 40.50BIT NUMBER 2 RR1 Bit Sub w/- Float Density (ppg) 8.90Size (inches) 7.875 12.25 Drill Collar- 6 1/2" ECD (ppg) 9.06Make Reed Reed Stabiliser Temp (° C) 32 1.00Type DSX519M-C1 EHT11G Drill Collar- 6 1/2" Viscosity (sec) 33 3.50IADC Code M222 117 Heavy Weight DP PV / YP (cp/lb) 4 / 5Serial Number 123283 CL4809 Gels (10s/m) 2 / 3T.F.A. (in) 0.638 0.994 API Filt. (cc) 2.00Depth In (m) 229 10 Sand (% Vol) 0.3 0.50 0.50Depth Out (m) IN 229 KCl (%) 5.8 1.00Total Meters 726 219 pH (strip) 9.5 0.50 1.50

29 | 16.5 11.5 | 11.5 LGS %/Vol 2.1ROP IADC | OnBtm 25 | 44.1 19 | 19 Chlorides (ppm) 32000 3.50Condition Out 4.00

FLOW DATA 1.00RATE (gpm/lps) 503 31.7 4.00AV - DP (fpm/mpm) 295 90 10.50AV - DC (fpm/mpm) 537 164 9.00SPP (psi/atm) 1100 75SPP (Calculated) 860 59

PUMP DATA 2STROKE 8.5'' 80 2.00

RATE 83 SURVEYS: MD | INC˚ | AZ˚ TOTALS 24.00 84.00LINER 6.0'' 1.00



HOURLY OPERATIONS SUMMARY 0000 to 2400From To [IADC Code] Description0:00 7:307:30 8:008:00 8:308:30 0:00

HOURLY OPERATIONS SUMMARY 0000 to 0600 on 30/06/090:00 2:002:00 2:302:30 6:00




Fine393 Days 2. General house keeping. Fine/Cool

Orallo Formation DAILY COST $605,416

DAILY OP'SSUMMARY

Continue to drill ahead 7 7/8" production hole with surveys to 955m. Top of Bungil Formation @ 580m. Top of Mooga Sandstone @ 784m. Top of Orallo @ 940m.

FORECAST OP'S Continue to drill ahead 7 7/8" production hole to 1700+/-. Wiper trip. Drill ahead to evaluate primary target Showgrounds Formation.

BIT INFORMATIONLENGTH KCL/PHPA 1 Move/ Rig Up/Down

0.24 844 2 Drilling

15.4 EMW 250psiLAST L.T.I.

SAFETY 1. Weekly Safety Meeting.


0.79 9.10 3 Wash / Ream9.08 9.26 4 Coring


55.26 6 / 5 6.1 Tripping- Other2 / 3 6.2 Wiper Trip



2 2 WT A E 0 ER TD Surface Vol. (Bbls) 410 12.1 Run CasingBHA LENGTH 184.09 Hole Vol. 169 12.2 CementingBHA WEIGHT 34.93 Mud Mixed 260 13 Wait on CementSTRING WT 76.12 New Hole Drilled 121.6 14 BOP's / WellheadHOOK LOAD 78.00 Downhole Losses 15 Test BOP / FormationWT BELOW JARS Surface Losses 118 16 Drill Stem Test

#1: National 8-P-80 TORQUE: ON | OFF 20 PHPA 9 21.1 Other

HOURS: JAR | SHK CHEMICAL USA

Documents

gsq-horizon.s3.ap-southeast-2.amazonaws.com€¦ · (ii) T22 TAYLOR-22 WELL COMPLETION REPORT TABLE OF CONTENTS 1.0 WELL CARD