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8/10/2019 Drilling Services Assam Asset Welcomes for Drilling Brief
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OUR VISION
TO BE A WORLD CLASS OIL & GAS
COMPANY,
INTEGRATED IN ENERGY BUSINESS
WITH DOMINANT INDIAN LEADERSHIPAND
GLOBAL PRESENCE.
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OUR GOALOUR GOAL
STRIVE FOR CONTINUALSTRIVE FOR CONTINUAL
IMPROVEMENT IN OURIMPROVEMENT IN OURPRACTICES & PERFORMANCEPRACTICES & PERFORMANCE
WITH ASPIRATIONAL GOALWITH ASPIRATIONAL GOALOF ZERO HARM TO THEOF ZERO HARM TO THE
PEOPLE, SOCIETY &PEOPLE, SOCIETY &
ENVIRONMENTENVIRONMENT
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DRILLING SERVICES at a GlanceDRILLING SERVICES at a Glance
COMMENCED Drilling Operation on: 09.06.1959COMMENCED Drilling Operation on: 09.06.1959 First well in AssamFirst well in Assam DisangmukhDisangmukh--1(1959)1(1959)
Rig NameRig Name-- 3 D 2 , Drilled Depth=3811m3 D 2 , Drilled Depth=3811m
Total No. of Exploratory Wells Drilled (01.04.09)Total No. of Exploratory Wells Drilled (01.04.09) --776776 Total No. of Development Wells Drilled(01.04.09)Total No. of Development Wells Drilled(01.04.09) --842842
Total no of workTotal no of work--over wells(2008over wells(2008--09)09) --135135 Deepest well in Assam: LKWDeepest well in Assam: LKW--351; DD=5113m351; DD=5113m
(07.11.1988)(07.11.1988)
Highest Meterage drilled in a dayHighest Meterage drilled in a day--713m (27.11.1998)713m (27.11.1998)
Total Meterage drilled since inception=4631.640kmTotal Meterage drilled since inception=4631.640km
(EXPL(EXPL--1953825M, DEV1953825M, DEV--2488384m, exp cum dev2488384m, exp cum dev--
184461m, S/Track184461m, S/Track--4970m)4970m)
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WHAT IS A WELL?WHAT IS A WELL?
A COMBINATION OFA COMBINATION OFCONCENTRIC CEMENTEDCONCENTRIC CEMENTEDCASING PIPES AND ACASING PIPES AND A
PRODUCTION TUBING STRINGPRODUCTION TUBING STRINGLOWERED INTO THE EARTH,LOWERED INTO THE EARTH,
AFTER DRLLING A HOLE, FORAFTER DRLLING A HOLE, FORTHE PRODUCTION OF OILTHE PRODUCTION OF OILAND/OR GAS FROMAND/OR GAS FROMSUBSURFACE ROCK STRATA.SUBSURFACE ROCK STRATA.
X MAS TREE (HAVINGX MAS TREE (HAVING
CONTROLLING VALVES)CONTROLLING VALVES)MOUNTED ON TOP ATMOUNTED ON TOP AT
WELLHEAD TO FACILITATEWELLHEAD TO FACILITATEPRODUCTION.PRODUCTION.
20 CASING
CEMENTED
13 3/8 CASING
CEMENTED
9 5/8 CASING
CEMENTED
7 LINER CASING
CEMENTEDPACKER
PRODUCTION
STRING
XMAS
TREE
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TWO TYPES OF WELLTWO TYPES OF WELL
1.1. EXPLORATORY WELLSEXPLORATORY WELLS-- ToTo
physically assess the potential ofphysically assess the potential ofthe reservoir established bythe reservoir established byseismic survey & delineationseismic survey & delineation..
2.2. DEVELOPMENT WELLSDEVELOPMENT WELLS-- ToTo
exploit the hydrocarbons fromexploit the hydrocarbons fromthe proven reservoirsthe proven reservoirs
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PURPOSE OF DRILLINGPURPOSE OF DRILLING
THE AIM OF DRILLING ANTHE AIM OF DRILLING AN
OIL OR GAS WELL IS TOOIL OR GAS WELL IS TO
PROVIDE A CONDUIT FROM APROVIDE A CONDUIT FROM A
RESERVOIR TO THERESERVOIR TO THE
SURFACE.SURFACE.
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ROTARY SYSTEMROTARY SYSTEMINCLUDES ROTARYINCLUDES ROTARY/ TDS SYSTEM & DRAWWORKS/ TDS SYSTEM & DRAWWORKS
BLOCK & TACKLE SYTEMBLOCK & TACKLE SYTEM --CROWNCROWNBLOCK & TRAVELLING BLOCKBLOCK & TRAVELLING BLOCK
CIRCULATING SYSTEMCIRCULATING SYSTEM-- MUDMUDPUMP,MANIFOLD, ROTARY HOSE,PUMP,MANIFOLD, ROTARY HOSE,
DRILL STRING,ANNULUS OF WELLDRILL STRING,ANNULUS OF WELL MUD HANDLING SYSTEMMUD HANDLING SYSTEM --SHALESHALE
SHAKER, DESANDER, DESILTER,SHAKER, DESANDER, DESILTER,
CENTRIFUGE, MUD CLEANER,ETCCENTRIFUGE, MUD CLEANER,ETC
MAIN SYSTEMS OF RIGMAIN SYSTEMS OF RIG
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LAND RIG
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TOP DRIVE SYSTEM(TDS)
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MUD PUMPS
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WELL DRILLING
OIL
Mud pump
Mud tank
Flow line
SwivelRotary hose
Mud flow
path
Stand
pipe
Kelly
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DRILLING SYSTEMDRILLING SYSTEM
ROTARY
DRILLING
DOWN HOLE
MOTOR
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MWDMWD
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RIG TYPES AND CAPACITIESRIG TYPES AND CAPACITIES
TYPETYPE--II--3 NOS,Capacity3 NOS,Capacity--10,000 FT.10,000 FT.
TYPETYPE--IIII--9 NOS,Capacity9 NOS,Capacity--15,000 FT.15,000 FT.TYPETYPE--IIIIII--7 NOS,Capacity7 NOS,Capacity--20,000 FT.20,000 FT.
TYPETYPE--IVIV--1 NO>20,000 FT.1 NO>20,000 FT.
CHARTER HIRED TYPECHARTER HIRED TYPE--IIIIII--2 NOS.2 NOS.CHARTER HIRED TYPECHARTER HIRED TYPE--IVIV--1 NO.1 NO.
CHARTER HIRED RIGS OWNED BYCHARTER HIRED RIGS OWNED BYSHIVANI.SHIVANI.
OWN RIGS ARE BHEL MAKE EXCEPT ONEOWN RIGS ARE BHEL MAKE EXCEPT ONE
TYPETYPE--2 AND ONE TYPE2 AND ONE TYPE--3 RIG WHICH ARE3 RIG WHICH AREROMANIAN MAKE.ROMANIAN MAKE.
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POPULATION OF RIGSPOPULATION OF RIGS
TOTAL RIGS(25)TOTAL RIGS(25)
OWNED RIGS (20)OWNED RIGS (20) CHARTERED RIGS (5)CHARTERED RIGS (5)
Drilling Mobile testing rig
3 nos Type-2
Operational
1 no-Type-3 RIG
under transportation
RIG BUILDINGRIG BUILDING
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RIG BUILDINGRIG BUILDINGRig building operationRig building operation::
Drill site preparationDrill site preparation--land around well siteland around well sitecleared, graded& leveled, approach roadcleared, graded& leveled, approach road
preparation for transportationpreparation for transportationRoute surveyRoute survey--conducted prior to rig shiftingconducted prior to rig shifting
Rig release / Rigging downRig release / Rigging down--lowering of mastlowering of mast
and other equipmentand other equipmentTransportation of rig equipmentsTransportation of rig equipments--properpropertransport fleet chosen based on equipmenttransport fleet chosen based on equipmentdimension, weight & route selecteddimension, weight & route selected
Rigging upRigging up-- Raising of mast and otherRaising of mast and other
equipmentequipment(First two operation done before rig release)(First two operation done before rig release)
TRANSPORTATION FLEETTRANSPORTATION FLEET
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TRANSPORTATION FLEETTRANSPORTATION FLEETMOLMOL 20 TON OIL FIELD TRUCK CUM20 TON OIL FIELD TRUCK CUM
HEAVY TUG WITH WINCHHEAVY TUG WITH WINCH--6NOS(OWNED)6NOS(OWNED)
CRANESCRANES
40 TON CAPACITY40 TON CAPACITY -- 10 NOS (HIRED)10 NOS (HIRED)
20 TON CAPACITY20 TON CAPACITY --19 NOS (HIRED)19 NOS (HIRED)100 TON CAPACITY100 TON CAPACITY --02 NOS(OWNED)02 NOS(OWNED)
30 TON CAPACITY30 TON CAPACITY
--01 NO(OWNED)01 NO(OWNED)
TRUCKSTRUCKS
9 TON CAPACITY9 TON CAPACITY--23 NOS(HIRED).23 NOS(HIRED).
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T R A I L E R S T R A I L E R S
TRAILERSTRAILERS --30 TON CAPACITY30 TON CAPACITY
06 NOS (HIRED)06 NOS (HIRED)
TRAILERSTRAILERS --20 TON CAPACITY20 TON CAPACITY
20 NOS (HIRED)20 NOS (HIRED)
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RIGRIG
TRANSPORTATIONTRANSPORTATION
APPROXIMATELY 70 TRAILER LOADSAPPROXIMATELY 70 TRAILER LOADS
3O TRUCK LOADS.3O TRUCK LOADS.
TIME TAKENTIME TAKEN-- 1515--30 DAYS FOR A30 DAYS FOR ADISTANCE OF 5KM TO 20KMDISTANCE OF 5KM TO 20KM
(INCLUDING RIG BUILDING).(INCLUDING RIG BUILDING).
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GAS
OIL & GAS
OIL
GL
DRILLING
FORHYDROCARBON
TYPES OF DEVELOPMENTTYPES OF DEVELOPMENT
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TYPES OF DEVELOPMENTTYPES OF DEVELOPMENT
WELLSWELLS
VERTICAL WELL
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VERTICAL WELL
BCS
TS-1
20
13 3/8
7 LINER
9 5/8
TS-2
BMS
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DIRECTIONAL WELLDIRECTIONAL WELL
TS-1
TS-2
BMS
BCS
20
13 3/8
9 5/8
7
`
OIL
HIGH ANGLE WELL
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HIGH ANGLE WELL
TVS-1350 M
TVD-2600M
ANGLE OF INCLINATION : 45- 55
MOST COMMON FOR DEVELOPMENT
WELLS
TS-
TS
BMS
BCS
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ENHANCING PRODUCTIONENHANCING PRODUCTION ....
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FIELD OF INTEREST
ERD WELLSERD WELLS
ENHANCING PRODUCTION ....ENHANCING PRODUCTION ....
TVD
HORIZONTAL DRIFT
ENHANCING PRODUCTION ...ENHANCING PRODUCTION ...
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L.D.S.TL.D.S.T.S.D.S.TS.D.S.T.
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MULTIMULTI--LATERAL WELLLATERAL WELL
WELL HEAD INSTALLATION & OILWELL HEAD INSTALLATION & OIL
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FALSE CONDUCTOR
20
13 3/8
9 5/8
FLOW PATHFLOW PATH
A
X-MAS TREE
C
B
PACKER
TO GGS
LAIPLINGAON20 CSG@291M TVD=291M,
-
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9 5/8 CSG@ 3468M TVD=3468M,
58.41, AZIM-113.06,DRIFT-232.7M
12 RAT HOLE @3520M
13 3/8CSG @ 2454M TVD=2454M,
- 0
8 HOLE @ 3737M, TVD=3492.42M
62.9, AZIM-108.5 DRIFT- 471.81M
LBS-5
BMS
LBS-1
LBS-2
LBS-6
BCS
TS-1 TO TS-6
GIRUJAN CLAY
UPPER SAND STONE
NAMSANG
ALLUVIUM
OIL
OIL
0-1100M
1100-1600M
1600-2000M
2000-2450M
2450-3300M
3300-3440M
3440-3660M
3660-3755M
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PLAN VS ACTUAL FOR WELL # B-200-A
-3500
-3000
-2500
-2000
-1500
-1000
-500
0
0 10 20 30 40 50 60 70 80DAYS
PLAN ACTUAL
18 5/8CSG-309M
13 3/8"CSG-1647 M
9 5/8"CSG-2809 M
7"CSG-2948 M
Monitoring of a Well
MUD POLICYMUD POLICY
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MUD POLICYMUD POLICY
High Viscous Gel : for Top hole sectionHigh Viscous Gel : for Top hole section
Non Dispersed mud / Gel Polymer : forNon Dispersed mud / Gel Polymer : for
Intermediate sections:Intermediate sections:
KClKCl--PHPAPHPA--Polyol system : for BCS & KOPILIPolyol system : for BCS & KOPILI
Clay free / Barytes freeClay free / Barytes free NDDF : for payNDDF : for pay
ZonesZones
All above muds are eco friendly &All above muds are eco friendly &
chrome freechrome free
THREE CASING POLICYTHREE CASING POLICY
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TS-1
TS-2
TS-3
TS-4
TS-5TS-6Tipam
Girujan
Clay
Allu-
vium
Na
mSang&
Up
perSand
BCS
HVG for drilling 17 hole
Non Dispersed / Gel-Polymer
for 12 hole
NDDF for drilling inclinedsection covering pay zone
FOUR CASING POLICY
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Tipam
Girujan
Clay
Allu-
vium
Na
mSang&
Up
perSand
BCS
BM
S
HVG for 26 hole
Non dispersed mud for 17 hole
Gel-Polymer for Tipam
KCl-PHPA-Polyol for BCS &
BMS in 8 final phaseKOPILI
PRIMARY WELLCONTROLPRIMARY WELLCONTROL
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PRIMARY WELLCONTROLPRIMARY WELLCONTROL
SUBSURFACE PRESSURES CONTROLLEDSUBSURFACE PRESSURES CONTROLLED
BY DRILLING FLUID COLUMN BY ITSBY DRILLING FLUID COLUMN BY ITS
HYDROSTATIC HEAD, BY ALTERING ITSHYDROSTATIC HEAD, BY ALTERING ITSDENSITY/WEIGHT AS REQUIRED.DENSITY/WEIGHT AS REQUIRED.
TO CONTROL UNEXPECTED FLOW FROMTO CONTROL UNEXPECTED FLOW FROM
WELL DURING DRILLING, BLOW OUTWELL DURING DRILLING, BLOW OUTPREVENTOR (BOP) INSTALLED ON WELLPREVENTOR (BOP) INSTALLED ON WELL
HEAD. CASING AND CEMENTATIONHEAD. CASING AND CEMENTATION
HELPS IN ISOLATION OF THE ZONES.HELPS IN ISOLATION OF THE ZONES.
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BLOW OUT PREVENTOR(BOP)
USED FOR CONTROLLING WELL KICK/
ABNORMAL PRESSURE FROM WELL
f S f
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Inputs for Successful drillingInputs for Successful drilling
Qualified, Skilled & MotivatedQualified, Skilled & Motivated
ManpowerManpower Healthy Rig & EquipmentHealthy Rig & Equipment
Well Planning & MonitoringWell Planning & Monitoring Quality well materials & SparesQuality well materials & Spares
Procedures & SystemsProcedures & Systems Integration of new technologyIntegration of new technology
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DRILLING SERVICESDRILLING SERVICES
Drilling EngineersDrilling Engineers--(Planning as well(Planning as wellas operations).as operations).
Directional drilling engineersDirectional drilling engineers
Cementing engineersCementing engineers
Drilling Fluid EngineersDrilling Fluid Engineers
Liner hanger & Fishing expertsLiner hanger & Fishing experts
Maintenance EngineersMaintenance Engineers
Regional Crisis Management TeamRegional Crisis Management Team
I i i iI iti ti R &
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InitiativesInitiatives..Rig & EquipmentRig & Equipment
Regular AuditsRegular Audits
Self AuditsSelf Audits
Safety AuditsSafety Audits
Tech. AuditsTech. Audits
Third Party inspectionThird Party inspection QHSE AuditQHSE Audit--All drilling rigs have receivedAll drilling rigs have receivedQHSE certifications valid till 21.12.2011QHSE certifications valid till 21.12.2011
OISD AuditOISD Audit
Rig & Equipment UpgradationRig & Equipment Upgradation
Top drives, IRD, Linear motion shaleTop drives, IRD, Linear motion shale
shakersshakers
Initiatives..Initiatives..
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Initiatives..Initiatives..
Self DevelopmentSelf Development Up gradation of Knowledge & SkillsUp gradation of Knowledge & Skills
Trainings & SeminarsTrainings & Seminars
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Well Control SchoolWell Control School--IDT..IDT..
IADCHOUSTON
USA
Driller & Supervisory levels
AccreditationInternational Alliance for Well Control (IAWC)
A joint effort between IADC Well CAP and the International Well
Control Forum (IWCF).
IWCFNETHERLAND
IAWC
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Thank You