EOR TECHNOLOGIES AND APPLICATIONS IN · PDF fileEOR TECHNOLOGIES AND APPLICATIONS IN MALAYSIA...
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EOR TECHNOLOGIES AND APPLICATIONS IN MALAYSIA
Dr. Nasir Haji DarmanNorhayati Bt Hashim
The Petroleum Policy and Management (PPM) Project4th Workshop of the Indonesia – Kutai Basin Case Study
Jakarta, Indonesia13 – 17 June 2006
Presentation Outline
• Introduction
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas Injection
West Lutong: Miscible Gas Injection
Tapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
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Custodian of Malaysian Petroleum Resources
A distinctive resource owner and manager, maximizing value of
Malaysia’s hydrocarbon resources
Petroleum Management Unit(PMU)
Facilitates development & prod.
Facilitates development & prod.
Monitor all E&P companies
Monitor all E&P companies
Optimize MalaysianE&P Assets
Optimize MalaysianE&P Assets
Attract exploration investments
Attract exploration investments
To fulfill our role and responsibilities, we must undertake
and implement EOR initiatives
PMU Key Business Focus Areas
Reserves production
Operational excellence
Reserves addition
PMU objective to maximize the domestic long term value of reserves is done through 4 main levers
Sustain 3% annual increase in production to meet demand
100% replenishment ratio for crude and 70% for gas through exploration
Production enhancement and reliability improvement
Reserves recovery Additional 33% replenishment ratio through IOR/EOR
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EOR in Malaysia: Current Status
Our progress so far…• Gas flood – 2 fields at full field WAG implementation, 1 on pilot
• Chemical EOR – pilot for offshore AS flooding
• Total of 11 projects at various stages (from lab study to full field)
Some of our challenges…• PSC commitment – EOR project payback often after PSC expiry
• Mindset – people view EOR as expensive and difficult
• Gas vs. Oil – EOR will defer gas development (gas cap)
We started off with conducting a screening in 2000 & identified 1 Bstb (unrisked) EOR potential
Our target is to add 520 MMstb of reserves from EOR by 2010
Integrated CO2-EOR…• Why do it – Over 18 Tscf HC gas locked due to high CO2
– EOR competing for gas with sales gas/LNG– CO2 perform better than natural gas
• CO2 supply – close to 5 Tscf in Peninsular Malaysia– over 24 Tscf in Sabah/Sarawak
• EOR target – Project A: 9 fields (one area), 150 km from CO2 source– Project B: 2 fields (one area), 140 km from CO2 source
• EOR process – immiscible and miscible
• Status – Immiscible pilot started in June-06– Miscible pilot decision in final stages
Our next step…• Phase 2 – Revisit EOR screening to identify new opportunities
• Partnership – Strategic alliances with experience parties to make offshore EOR in Malaysia a reality
EOR in Malaysia: What’s Next?
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EOR in Malaysia: Our Roles to Make it Happen
Re-negotiating our PSC in return for EOR implementationPSC renewal with longer periodBetter terms
Tackling Triple PlusLeadership – Formal/Informal coaching, job attachmentsMindset – support from the top, show positive resultsInstitutional Capability – succession plan, EOR fraternity
Revised procedure and guidelinesEOR potential is assessed for every green field developmentIOR and EOR is integrated and not in silos
Technology Improvement and R&DSupported by UTP, local universitiesResearch Technology Division
As a custodian of Malaysian Petroleum Resources, we have to manage and maximize our hydrocarbon assets
We have to ensure 520 MMstb of reserves from EOR by 2010 a REALITY
Overview of Malaysian Oil and Gas Industry
Oil was discovered in Malaysia in Miri, Sarawak in 1910.
Initially producing some 83 barrels per day, the petroleum industry in Malaysia has now grown into a multi-billion dollar business with oil production over 600,000 barrels per day while gas is being produced at 5 billion cubic-feet per day.
To date a total of 2,664,023 million line km seismic had been acquired and 1,100 exploration wells (515 Appraisal and 585 Wildcat wells) had been drilled in Malaysia resulting in the discovery of a total of 134 oil fields and 178 gas fields.
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Overview of Malaysian Oil and Gas Production
• Malaysian oil reserves was in declining phase (from 1994 – 2002)
• Through a concerted effort, our reserves return to an upward trend from 2003
• Our target is to have a minimum of 1.33 replacement ratio
• At current rate of production, our reserves life is about 19 years
Malaysian Historical Crude Oil Trend
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erve
s, B
stb
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uctio
n, B
stb
Reserves Production
Malaysian Historical Natural Gas Trend
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• Current reserves is in plateau stage
• Gas supply is critical to PGU and MLNG
• Our target is to have a minimum of 0.7 replacement ratio
• At current production rate, our reserves life is 33 years
EOR Potential
There is a substantial amount of oil reserves that can be achieved through IOR/EOR processes in the Malaysian oil fields.
Acknowledging the above, PETRONAS has initiated several initiatives to encourage the operators in Malaysia to look into EOR opportunities in their respective operating areas.
Total STOIIP 17.0 B stb
EUR 5.62 B stb
Remaining oil 11.38 B stb
Averaged RF 33%
Remaining oil
(67%)
EUR (33%)
Total STOIIP for Malaysian producing fields = 17 B stb
Source: ARPR 2005
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To identify EOR potential, PETRONAS has conducted EOR screening study in year 2000
Based on the screening study, in Malaysian context, three EOR processes may be considered:
Gas injection: miscible or immiscible in WAG or straight modeChemical methods (surfactant, foam, polymer and gel),Microbial methods.
MICROBIAL FLOODINGRecovery by this method utilizes the effect of microbial solutions on a reservoir. The reservoir is usually
conditioned by a water preflush, then a solution of microorganisms and nutrients is injected. As this solution is pushed through the reservoir by drive water, it forms gases and surfactants that help to mobilise the oil. The resulting oil and product solution is then pumped out through production well.
Preflushto
Condition Reservoir
Driving Fluid
(Water)Nutrients
Microor-ganisms
Microbial Products
for Releasing
Oil
Single 5-Spot Pattern Shown)
Produced Oil and Products
Injection Pump
Production Well
Injection Well
Microorganisms and Nutrients
Oil and Products
MICROBIAL FLOODINGRecovery by this method utilizes the effect of microbial solutions on a reservoir. The reservoir is usually
conditioned by a water preflush, then a solution of microorganisms and nutrients is injected. As this solution is pushed through the reservoir by drive water, it forms gases and surfactants that help to mobilise the oil. The resulting oil and product solution is then pumped out through production well.
MICROBIAL FLOODINGRecovery by this method utilizes the effect of microbial solutions on a reservoir. The reservoir is usually
conditioned by a water preflush, then a solution of microorganisms and nutrients is injected. As this solution is pushed through the reservoir by drive water, it forms gases and surfactants that help to mobilise the oil. The resulting oil and product solution is then pumped out through production well.
Preflushto
Condition Reservoir
Driving Fluid
(Water)Nutrients
Microor-ganisms
Microbial Products
for Releasing
Oil
Single 5-Spot Pattern Shown)
Produced Oil and Products
Injection Pump
Production Well
Injection Well
Microorganisms and Nutrients
Oil and Products
Produced Fluids (Oil, Gas and Water) Separation and Storage Facilities
Carbon DioxideWater
Injection Pump
Production well
Water
Injection well
Drive water
AdditionalOil
RecoveryGas Gas
Mis.zone
Oil Bank
MISCIBLE GAS FLOODINGThis method is a miscible displacement process applicable to many reservoirs.
A gas slug followed by alternate water and gas injections (WAG) Viscosity of oil reduced providing more efficient miscible displacement
Produced Fluids (Oil, Gas and Water) Separation and Storage Facilities
Carbon DioxideWater
Injection Pump
Production well
Water
Injection well
Drive water
AdditionalOil
RecoveryGas Gas
Mis.zone
Oil Bank
Produced Fluids (Oil, Gas and Water) Separation and Storage Facilities
Carbon DioxideWater
Injection Pump
Production well
Water
Injection well
Drive water
AdditionalOil
RecoveryGas Gas
Mis.zone
Oil Bank
Produced Fluids (Oil, Gas and Water) Separation and Storage Facilities
Carbon DioxideWater
Injection Pump
Production well
Water
Injection well
Drive water
AdditionalOil
RecoveryGas Gas
Mis.zone
Oil Bank
GAS FLOODINGThis method is a miscible displacement process applicable to many reservoirs. A gas slug followed by alternate water and gas injections (WAG) is usually the most feasible method.
Viscosity of oil reduced providing more efficient miscible displacement
CHEMICAL RECOVERYRecovery methods in this category may include surfactant, polymer and alkaline flooding. After a
reservoir is conditioned by water preflush, specific chemicals are injected to reduce interfacial tension (help release oil) and /or improve mobility control (reduce channeling). This action is followed by injecting a driving fluid (water) to move the chemical and resulting oil bank to production wells.
Mobility ratio is improved and flow through more permeable channels is reduced, resulting in increased volumetric sweep Single 5-Spot Pattern Shown)
Injection Fluids
Oil
Injection Pump
Production Well
Injection Well
Preflush to
Condition Reservoir
Driving Fluid
(Water)
Fresh Water Buffer
to Protect
PolymerSolution
ForMobilityControl
Additional Oil
Recovery (Oil Bank)
CHEMICAL RECOVERYRecovery methods in this category may include surfactant, polymer and alkaline flooding. After a
reservoir is conditioned by water preflush, specific chemicals are injected to reduce interfacial tension (help release oil) and /or improve mobility control (reduce channeling). This action is followed by injecting a driving fluid (water) to move the chemical and resulting oil bank to production wells.
CHEMICAL RECOVERYRecovery methods in this category may include surfactant, polymer and alkaline flooding. After a
reservoir is conditioned by water preflush, specific chemicals are injected to reduce interfacial tension (help release oil) and /or improve mobility control (reduce channeling). This action is followed by injecting a driving fluid (water) to move the chemical and resulting oil bank to production wells.
Mobility ratio is improved and flow through more permeable channels is reduced, resulting in increased volumetric sweep Single 5-Spot Pattern Shown)
Injection Fluids
Oil
Injection Pump
Production Well
Injection Well
Preflush to
Condition Reservoir
Driving Fluid
(Water)
Fresh Water Buffer
to Protect
PolymerSolution
ForMobilityControl
Additional Oil
Recovery (Oil Bank)
Preflush to
Condition Reservoir
Driving Fluid
(Water)
Fresh Water Buffer
to Protect
PolymerSolution
ForMobilityControl
Additional Oil
Recovery (Oil Bank)
Systematic approach has been developed to identify EOR potential in Malaysia
Prediction Runs
PRIze Prediction
Runs
GO/NO GO
Screening
Sector Model Prediction
Runs
Reality Check
Screening
To identify suitable IOR processes for major producing oil fields in Malaysia
Prediction run with sensitivity analyses for 6 reservoirs
Three (3) criteria set by IOR Team
Prediction run to estimate incremental oil recovery through IOR process
Prediction run by sector model on the top six (6) reservoir
The study screened 31 reservoirs from 16 fields in the Peninsular Malaysia and 39 reservoirs from 19 fields in East Malaysia.
Considering some practical limitation (such as gas source and reservoir heterogeneity), 37 reservoirs were identified to be technically feasible for IOR/EOR processes.
Numerical simulation models (sector) were developed for the group which has the highest remaining oil-in-place and the highest recovery for the selected EOR process identified in the first-level screening.
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The amount of potential incremental recovery from these reservoirs is almost One (1) Billion barrels
0
50
100
150
200
MM
stb
Producing Reservoirs
* Includes Horizontal Wells, alkaline surfactant polymer flooding, surfactant polymer flooding.Source: PETRONAS 2000 EOR screening for Malaysia’s oil producing fields; CSS team analysis
Tapis Lower J
Guntong Upper I
St Joseph B/G
Tiong J – 20/21
Guntong Lower IDulang E-12/3(currently on pilot stage)
Dulang E-14 (currently on pilot stage)
The top 6 reservoirs have been identified as Group 1 candidates (high remaining and incremental oil)
CO2 miscibleWater FloodHC miscibleOthers*
Legend
Total potential = 955 MMstbNumber of reservoirs = 37Average size = 26MMstb
Group 1 : 570 MMSTB (60.4 %)
Other potential reservoirs: 374 MMSTB (39.6 %)
Sixty percent (60%) of the total EOR potential in Malaysia reside in six reservoirs.
Presentation Outline
• Introduction
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas Injection
West Lutong: Miscible Gas Injection
Tapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
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Phases for EOR implementation: 4 stages with 3 decision gates review
STAGE 1
Screening study
Field and EOR process identification
Preliminary economic
assessment
STAGE 2
Detail study i.e. lab and simulation
Pilot design and
surveillance
Economic assessment
STAGE 3
Pilot implementation
New data acquisition & processing
Full field design & Economic
Assessment
STAGE 4
Full field implementation
Viability Approval Concept
ApprovalProject
Sanction
Alternative or Abandon
Gate 1 Gate 3Gate 2
Stage ActivitiesStage Activities
Decision GatesDecision Gates
Yes Yes Yes
No No No
Very low(Expense)
Cost ExposureCost Exposure Low(Expense)
Med / High(Expense/capitalise)
High(Capitalise)
Operation, maintenance
and surveillance
Currently we have 11 actively on-going EOR projects in Malaysia
FIELD PROCESSBaram WAG Injection
Guntong Miscible WAG Injection
St. Joseph Immiscible WAG Injection
FIELD PROCESS
Dulang Immiscible WAG Injection
Tabu Double Displacement
Baronia Immiscible WAG Injection
West Lutong Miscible Gas Injection
FIELD PROCESSTapis Miscible WAG Injection
Bokor Aquifer assisted WAG
CEOR Chemical Injection
Tiong/Kepong Immiscible Gas Injection
Stage 1
Stage 2
Stage 3/4
(Pilot or full field implementation)
(Detailed study)
(Preliminary / screening level)
At different level of maturity. Will discuss the progress of top 5 candidates
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Kerteh KALIMANTAN
THAILAND
SINGAPORE
Kerteh
KUALA LUMPUR
SABAH
SARAWAK
BRUNEI
Kerteh KALIMANTAN
THAILAND
SINGAPORE
Kerteh
KUALA LUMPUR
SABAH
SARAWAK
BRUNEI
Location of the 5 fields
Dulang:• 130 km offshore Kerteh• Operator is PCSB
Tapis:• 197 km offshore Kerteh• Operator is EMEPMI
Tabu:• 229 km offshore Kerteh• Operator is EMEPMI
Baronia:• 40 km offshore Lutong• Operator is PCSB
West Lutong:• 12 km offshore Lutong• Operator is PCSB
Three at offshore Peninsular and two at offshore Sarawak
Presentation Outline
• Introduction
• Current Progress Updates and StatusDulang : Immiscible WAGBaronia : Immiscible Gas Injection
West Lutong: Miscible Gas Injection
Tapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
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Dulang field: Background Information
N
Block S3
* B16* B5
*A10
* A14* A2
* A31
* A29
-1200
-1250
SCHEMATIC WELL LOCATION
S3 Block
* B16* B5
*A10
* A14* A2
* A31
* A29
-1200
-1250
SCHEMATIC WELL LOCATION
S3 Block
* B16* B5
*A10
* A14* A2
* A31
* A29
* B16* B5
*A10
* A14* A2
* A31
* A29
-1200
-1250
SCHEMATIC WELL LOCATION
S3 Block
Pilot Area …• One of Malaysia’s major producing
oilfield (OIIP =1119 MMstb and EUR = 328 MMstb)
• East-West trending anticline structure dissected by numerous normal faults
• Water depth of 76m and area ~11 km x 3.5 km
• Pilot involves 3 producers and 3 injectors
Water injection started in 1996 due to falling pressures
Re-injection of produced gas identified as cost effective EOR option
Injected gas stream is having more than 50% CO2
Pilot WAG at S3 block started in Nov-02 targeting E12/13/14 reservoirs
Dulang Field: Immiscible WAG pilot strategy
Implementation Strategy
* B16* B5
*A10
* A14* A2
* A31
* A29
-1200
-1250
SCHEMATIC WELL LOCATION
WAG Inj.WAG Inj.
WAG Inj.WAG Inj.
Gas Inj.Gas Inj.
Components of pilot in S3 block:
1. WAG in non-water invaded area (E12/13/14)Injector: A10Producers: B5 and B16
2. Gas injection (E12/13)Injector: A14 recomplete in E12/13Producer: A2
3. WAG in water invaded area (E12/13/14)Injector: A29Producer: A2
Main pilot – W AG & attic oil recovery Main pilot – W AG & attic oil recovery Main pilot – W AG & attic oil recovery
WAG injection (4 MMscf /d gas and 3500 b/d water ) for cycles of 3 months each.
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• Contributing WAG mechanisms drainage of ‘attic oil’ up-dip of the existing producersmore efficient sweep of water flooded regionsflooding of tighter reservoir intervalspartial vaporization of the un-swept oil
Dulang Field: Immiscible WAG pilot performance
10 BOPD 100 – 300 BOPD
WCUT 95% 70%
Pressure maintained
Well A2L
350 BOPD 600 BOPD
GOR 2000scf 1000scf
1350 psia 1467 psia
Well B5L
105 BOPD 300 BOPD
GOR 4500scf 2200scf
WCUT 80% 70%
Well B16
• Pilot performance
Dulang Field: Plan for full field implementation in 2007
Based on pilot performance, results were scale-up to represent full field implementation. P50 of 18.5 MMstb of incremental reserves is expected.
Acquisition of gas compressor and integration with FFR study is currently on-going
Dulang Decline (2005/6 WP&B)
Infill Wells (2004 WP&B)
P85 = 12 MMstb
P50 = 18.5 MMstb
P15 = 23 MMstb
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Presentation Outline
• Introduction
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas InjectionWest Lutong: Miscible Gas Injection
Tapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
• 3rd largest producing reservoir in the Baronia field.
• Production started since 1972.
• Initially under-saturated reservoir
• Oil is 42o API and 0.3 cP
Baronia Field: Background Information
• Due to limited aquifer support, peripheral water injection commenced with 4 horizontal injectors in 1994.
• The structure is simple, internally unfaulted, low relief domal anticline. The reservoirs are highly continuous as demonstrated by good geological marker correlation.
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Pilot Objective and PlanTest immiscible gas injection processShowcase for a large-scale immiscible gas injection in the BDO fieldsLocation: Well BN-29 targeting RV2.1 reservoir
Baronia Field: Immiscible gas pilot strategy
• Gas will be injected from BN-29 at 5 mmscf/d
• Continue water injection from BN-58, horizontal injector
• Pilot was designed to provide “least disturbance test” to the current oil production
Model predicted that immiscible gas injection of 5 MMscf/d with continued waterinjection from next well could yield 2.7 MMstb incremental recovery.
Baronia Field: Plan for pilot project in 2006
Pilot FDP has been approved by PETRONAS and flowlines modification is currently underway to convert BN-29 well to become gas injector
Baronia RV2 immiscible gas injection pilot will be interpreted together with West Lutong miscible pilot (described later) to come out with regional EOR
implementation strategy at Baram Delta
-2%
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200%Cumulative Injection Since Start of Gas Injection as %HCPV
Incr
emen
tal R
ecov
ery
as %
STO
IIP
Miscible
Near Miscible
Immiscible
(W Lutong)
(Baronia)
-2%
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200%Cumulative Injection Since Start of Gas Injection as %HCPV
Incr
emen
tal R
ecov
ery
as %
STO
IIP
Miscible
Near Miscible
Immiscible
(W Lutong)
(Baronia)
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Presentation Outline
• Introduction
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas Injection
West Lutong: Miscible Gas InjectionTapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
• One of the oldest producing field in Malaysia
• KL and MN reservoirs contribute > 70% of the total production
• 1/3 of the MN commingled modeled as a single unit. STOIIP = 110 MMstb
• Pilot to test miscible gas injection in Baram Delta fields
• MMP at or near current reservoir pressure. Strong aquifer.
West Lutong Field: Background Information
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West Lutong Field: Miscible gas pilot strategy
Capture Producer
M
N
1,100 ft
100 ft
Pilot Injector (New)
Logging, Observation Well (Fiberglass Casing, Slimhole)
Perforations
*Note: Well distances are notional
Capture Producer
M
N
1,100 ft1,100 ft
100 ft
Pilot Injector (New)
Logging, Observation Well (Fiberglass Casing, Slimhole)
Perforations
*Note: Well distances are notional
PILOT PLAN
1 injector and 1 observation (100 feet apart)
Barge mounted CO2 generator supplying 2 MMscf/d high purity CO2
3 months at 1500 psiinjection pressure
1st injection anticipated early 2007
Determine remaining oil saturation
Areal sweep efficiency
Injectivity and need for WAG injection
Vertical sweep efficiency
Minimum miscibility pressure
PILOT OBJECTIVE
“The West Lutong pilot, if implemented, will become the first miscible
pilot in Malaysia. If successful, the miscible process can give
an incremental of up to 165 MMstb for the BDO fields.”
West Lutong Field: Plan for pilot project in 2007
0 50 100 150 200
Incremental oil (mmstb)
Miscible
Immiscible
West LutongBaramBaroniaBettyBakauBokorTukauSiwa
91MMstb
165MMstb
Both pilots at Baronia and West Lutong are planned to confirm 256 mmstb incremental oil at Baram Delta region (miscible and immiscible processes)
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Presentation Outline
• Introduction
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas Injection
West Lutong: Miscible Gas Injection
Tapis: Miscible Gas InjectionTabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
TAPIS EAST-FAULT BLOCK STRUCTURE MAP
OWC : -2050 mGOC : -1550 mPre-Production
EFB
F-02
F-06F-04
CI = 50m
• Water depth 64 meters
• Discovered in 1969
• Five platforms
• 90 development wells
• Current focus is on the east fault block of lower J reservoirs
Tapis Field: Background Information
Small gascap is present in the fault block
Lower J unit have contributed some 40% of the total Tapis production.
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Tapis Field: Miscible gas study work flow
Tapis EOR study workflow
Lower J Unit was selected due to…Potential recovery of bypassed and residual oil from mature waterfloodLarge remaining oil remaining in placeExisting water & gas injection facilities, existing well patternsNew geologic model and a history matched simulation model available
Tapis Field: Miscible gas study
“The immiscible floods yielded an incremental recovery between 4-7%
whereas miscible floods gave a higher recovery between 10-13%.”
Miscible
Separator gas
LPG enrichment
Immiscible
CO2
Process evaluated
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Presentation Outline
• Introduction
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas Injection
West Lutong: Miscible Gas Injection
Tapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
• Oval-shaped east-west trending anticline
• Area = 26 km2
• Water depth = 64 meters
• Two major north-south trending normal faults
• Discovered in 1978
• Developed in 1986
Tabu Field: Background Information
Study focused on West Fault Block (WFB) in the Upper I reservoirs
Double displacement process (DDP) is currently being tested
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Tabu Field: The double displacement process
• Potential recovery of by-passed oil downdip of high GOR wells by converting alternate wells along periphery of oil rim to water injectors
• The up-dip injector forces the gas cap towards southwest, countering the aquifer influx and increasing future oil from nearby wells.
• Cost of flowlines, well restoration and surveillance is relatively minimal
• Prediction runs showed that DDP for the Tabu WFB Upper I reservoirs alone will give an estimated incremental of 1.8 MMstb
• Field works are currently on-going
Presentation Outline
• Introduction
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas Injection
West Lutong: Miscible Gas Injection
Tapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
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Operating EOR in offshore environment is technically challenging
Only about 9% of world wide EOR application is in offshore environment. On the other hand, all of our producing fields are offshore.
Some of the most common problem associated with offshore operation
Large well spacing
Limited space at the surface
0
25
50
75
100
Wor
ld-w
ide
EOR
ap
plic
atio
ns (%
)
Offshore Onshore
World-wide EOR experiences
Source=OGJ 2002
0
500
1000
1500
2000
2500
Min Average MaxW
ell s
paci
ng fo
r G
roup
1 E
OR
cand
idat
es (f
eet)
Range of successul chemical EOR (330 - 466)
Well spacing for Group 1 reservoirs
Average well spacing for successful gas EOR project
Well spacing for Group 1 reservoirs is suitable for gas injection EOR but not chemical
On average, 68% of the 157 existing platforms installed in Malaysia are more than 20 years old
Gas injection pipeline, especially with CO2 handling capability, does not exist. Major infrastructure development is needed (major investment).
Some of the fields are not reaching the MMP even if 100% purity CO2 is injected. Major repressurization project for the reservoir is needed before MMP is reached.
• 68% or 157 platforms had been in-placed more than 20 years.
0
10
20
30
40
50
60
70
5 10 15 20 25 30 35Age of platform
No.
of p
latfo
rm
33% < 20 years 68% >20 years
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Operating EOR in offshore environment is commercially challenging
For gas flooding (such as CO2 injection), the average total cost per barrel is around US$ 12 – 20, which, compared to average unit technical cost in Malaysia, is relatively high.
Source=SPE 24142
World wide EOR cost database
Cost of Incremental Oil (US$/bbl)Process
Injectant Only
3 – 54 – 6
5 – 10
10 – 20~ 7
2 – 71 – 5
Total Process
ThermalSteamPurchased Fuel
5 – 77 - 10
12 - 20
20 – 30~ 19
10 – 17~ 2 - 7
CO2
Surfactant (Micellar)AlkalineSurfactant/Alkaline/PolymerPolymer
Gas
Chemical
Timing is critical to realise the EOR potential
A clear and transparent work process must be in place to ensure that all of the requirements for the project assessment are met.
• Long timing leads to unfavorable economics especially to the Contractors. Cut the time required to reach full field application, without cutting any corners …
EOR Candidate
Reservoir Management strategies based on historical information together with experimental and simulation studies
Pilot projects
Pilot Monitoring
Optimization programs
Pilot EvaluationLarge field scaleWAG applications
Surveillance of projects
3 3 –– 5 5 yearsyears
(e.g. Jay/Little Escambia)
Field expansions without a complete interpretation
of pilot projects(e.g. Prudhoe Bay)
Successfulprojects
2 2 –– 3 3 yearsyears
3
1
2
Source: SPE 50645, 1998
Industry standard
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Current mindset and behaviour prohibits EOR potential
EOR is always associated with uneconomic projects and very difficult to implement, even without study being done.
“The most important reservoir is the reservoir between our ears”Dr. John Doran, CEO – ROC Oil Company Ltd
Most people in the industry have a disaster mentality about EOR
EOR Failure Disaster
Presentation Outline
• Introduction
• EOR Motivations and Focus
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas Injection
West Lutong: Miscible Gas Injection
Tapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
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Way Forward
Solution 1Solution 1Management support
- clear directions- conducive environment for EOR- Strategic and forward thinking
Solution 2Solution 2 Learning from pilot & other projects worldwide- balancing risk and benefit- Take some calculated risks- effective networking and collaboration effort
Solution 3Solution 3 Starting early- EOR need to be considered even during FDP
submission for green fields
Solution 4Solution 4Synergy in high CO2 gas field development
- long term abundant supply- facilities sharing by integration
Solution 5Solution 5Win-win situation with PS Contractor
- attractive PSC terms- work commitments- Focus on REWARD and not COST
Presentation Outline
• Introduction
• EOR Motivations and Focus
• Current Progress Updates and StatusDulang : Immiscible WAG
Baronia : Immiscible Gas Injection
West Lutong: Miscible Gas Injection
Tapis: Miscible Gas Injection
Tabu: Double Displacement
• Issues and Challenges
• Way Forward
• Summary and Conclusions
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Summary and Conclusions
There is a substantial amount of oil reserves that can be achieved through EOR process in the Malaysian oil fields.
Acknowledging the above, PETRONAS has initiated several initiatives to encourage the operators in Malaysia to look into EOR opportunities in their respective operating areas.
Previously, there were little detailed studies have been conducted to firm up these potentials and monetised them into a full-scale EOR projects.
Among the main challenges are the operating environment (offshore), maturing assets which require facilities upgrading, limited detailed assessments, and lack of capability were identified.
In order to meet these challenges, all parties will need to have the right mindset and behaviour towards realising EOR as a real project to increase value in the business.
Thank You For Your Attention