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1Showcasing Indian fields Showcasing Indian fields
OffshoreOffshore
S. K. VermaSub-surface Manager
Mumbai High Asset, ONGC Mumbai
April 15, 2010Petroleum Federation of India (PETROFED)
New Delhi
Conference onIOR-EOR : Challenges, Process and Technologies
Session 1 : Indian IOR/ EOR Experience
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2yy IntroductionIntroduction
yy Mumbai Offshore BasinMumbai Offshore Basin
yy Field Development challengesField Development challenges
yy Major IOR/EOR ProjectsMajor IOR/EOR Projects
yy IOR/EOR Experience IOR/EOR Experience
yy Process and TechnologiesProcess and Technologies
yy Way ForwardWay Forward
Presentation Structure
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30
20
40
60
80
100
120
140
160
ONGC Western Offshore
Crude Oil Production, MMT Natural Gas Production, BCM
Oil & Gas Production during XI Plan PeriodOil & Gas
Production during XI Plan Period
140.06
112.39 BCM
87.2476.91 BCM
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4Mumbai Offshore Basin
y Formed due to extensional tectonics at the time of rifting of
the Indian plate from Madagascar during late Jurassic-early
Cretaceous period
y Covers about 148,000 km2 from coast to 200m isobath
y Divided into 6 tectonic blocks
y Mature source rocks present in lower Eocene-Paleocene
Pannaformation
y Hydrocarbons established in multiple pay zones in this basin
ranging from fractured basement to middle Miocene
y The extensive post-Miocene shale acts as the regional
cap-rock.
Suratdepre
ssion
Panna depressionRatna depression
Bombay platform
Evidence from radiometric dating indicated that the Earth is
about 4.570 billion years old
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5SURATNORTH TAPTI
MID TAPTI
SOUTH TAPTI
SD-4C-24C-26A
DAHANU CDSD-1
SD-14
C-22CA
DAMAN
B-55
B-163
B-15B-188
B-48
B-46
B-45
D-12 B-192AB-192
B-121B-119
PANNA
VASAI
MUKTA
D-1D-18
B-80
NEELAM
HEERA R-15A
B-147
B-51 MUMBAI
MUMBAI HIGH
OIL FIELD
GAS FIELD
LEGEND
Major Oil & Gas fields of Mumbai Offshore
VASAI EAST
Main structures delineated in the Mumbai Offshore Basin
Mumbai High, Ratna, Heera, Panna, Vasai, Neelam, Mukta, Tapti,
and other small structures
Success expanded to East Coast with discovery of oil & gas
in Godavary, Cauvery offshore
M R83 H84 P86 V88 NM90
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6Mumbai High Field
(As on 01.04.2010)
IOIP, MMt 1659Cumulative Oil, MMt 411Recovered, % 25Oil rate,
bopd 2,25,000Water Injection, bwpd 9,00,000
Water-cut,% 69Platforms 113Producing strings 727Gas producers
36Water injection strings 198
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7Heera
(As on 01.04.2010)
IOIP, MMt 305Cumulative Oil, MMt 55Recovered, % 18Oil rate, bopd
56,000Water Injection, bwpd 1,46,000
Water-cut,% 56Platforms 19Producing strings 161Gas producers
7Water injection strings 58
SURATNORTH TAPTI
MID TAPTI
SOUTH TAPTI
SD-4C-24
C-26A
DAHANUCD
SD-1
SD-14
C-22
CADAMAN
B-55
B-163
B-15B-
188B-48
B-46
B-45
D-12 B-192AB-192
B-121B-119
PANNA
VASAI
MUKTA
D-1
D-18
B-80
NEELAM
HEERAR-15A
B-147
B-51 MUMBAI
MUMBAI HIGH
OIL FIELDGAS FIELD
LEGEND
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8Neelam
(As on 01.04.2010)
IOIP, MMt 109Cumulative Oil, MMt 29Recovered, % 26Oil rate, bopd
20,000 Water Injection, bwpd 97,000
Water-cut, % 85Platforms 13Producing strings 72 Water injection
strings 23
SURATNORTH TAPTI
MID TAPTI
SOUTH TAPTI
SD-4C-24
C-26A
DAHANUCD
SD-1
SD-14
C-22
CADAMAN
B-55
B-163
B-15B-
188B-48
B-46
B-45
D-12 B-192AB-192
B-121B-119
PANNA
VASAI
MUKTA
D-1
D-18
B-80
NEELAM
HEERAR-15A
B-147
B-51 MUMBAI
MUMBAI HIGH
OIL FIELDGAS FIELD
LEGEND
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9Bassein
(As on 1.4.2010)
IGIP, BCM : 339
Cumulative Gas, BCM : 187
Recovered, % : 55
Gas rate, MMSCM : 28.2
Number of platforms : 6
Producing gas wells : 49
Producing oil wells : 5
SURATNORTH TAPTI
MID TAPTI
SOUTH TAPTI
SD-4C-24
C-26A
DAHANUCD
SD-1
SD-14
C-22
CADAMAN
B-55
B-163
B-15B-
188B-48
B-46
B-45
D-12 B-192AB-192
B-121B-119
PANNA
VASAI
MUKTA
D-1
D-18
B-80
NEELAM
HEERAR-15A
B-147
B-51 MUMBAI
MUMBAI HIGH
OIL FIELDGAS FIELD
LEGEND
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10
0
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MH HEERA NEELAM B-173 D1 VASAI EAST
Annual oil production from MR fields
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11
Initiatives: IOR/ EORInitiatives: IOR/ EOR
IOR/EOR Schemes in 15 major fields of ONGC have been under
implementation since 2001
IOR/ EOR campaign & redevelopment projects with investment
more than Rs 30,000 Crores
This initiative has helped to arrest the natural decline to
great extent and raised the recovery factor from these
fields from 27.5% in 2001 to 32.5% in 2009.
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12
Challenges, Process & Challenges, Process &
Technologies Technologies
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13
y Matured fieldsy Complex reservoirs
Large area, shallow reservoirs
Heterogeneous Multilayered Gas cap Thin sweet zones Drilling
complications
y Water cut increasingy Aging facilities
Western offshore challenges
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14
Multi-layers of Mumbai High
(a) Stratigraphic Sequence in Mumbai High Field
LIII reservoir-multilayered with shale, limestone,
sequence-holds about 94% of the total IOIP
Oil reservoirs :L I, LII, LIII, LIV, LV, Basal Clastics and
fractured Basement
Gas reservoir :S1
(b) Sub-Layers of L-III Reservoir
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15
Porosity Permeability -derived
Geological Cross Sections Showing Layer wise Porosity and
Permeability Distribution
Fracs, vugs, channels, tight zones
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16
0
50000
100000
150000
200000
250000
300000
350000
400000
450000
500000
M
a
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M
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100
200
300
400
500
600
700
800
N
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S
t
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i
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g
s
Initial Development
WI, ADBHN & AORP
EORP in South & L-II
BHN Accident
R
e
-
d
e
v
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P
h
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I
,
A
d
d
l
d
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A
1
Gas Lift
R
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d
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v
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P
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I
&
I
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Mumbai High Development History
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17
Renewed Development Strategy
y Review field development/ redevelopment Integration of data
More accurate modeling MDT approach Target bypassed oil zones/
patches / Infill drilling Well completion Re-oriented drainage
pattern
y Best in class technology inductiony Domain expertsy Improved
production practices
Conservation of reservoir energy Adequate energy replenishment
Efficient artificial lift system Integrated asset model
approach
y Projectised IOR / Redevelopmenty EOR pilots
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18
0.0
5.0
10.0
15.0
20.0
25.0
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M
M
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0
10
2030
40
50
60
7080
90
100
P
e
r
c
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n
t
a
g
e
40% Rec plan Revised FR Phase II% recovery Water Cut %
25%411 MMt
Life cycle rolling development plan approach
Rolling development plan to be conceived based on experience and
new data of each plan and induction of evolving technologies
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19
Challengey To locate by passed oil
in highly heterogeneous Carbonate Reservoir
Approachy Improved modeling
through Seismic to Simulation
y Integration
-140
-1400
-1400
-1350
-1350
1
1Z
2
33Z
4
5
5Z
66Z
7
7Z
8H
99Z
1
2
3
4
5
67H
8H
9
7P
2Z8P
1
2
3
4
5
67
1
56
78
1
2
3
4
5
6
78 9
2Z
8Z
1
2
3
4
5
6
7
8
9
1Y
1Z
2Z
3Z6Z
1
2
3
45
67
8
9
1
2
3
4
5
6
7
8
9
10H
11H
8ZH
1
2
3
4
5
6
7
8
9
1Z
2
3
5
6
7
95Z
1H
1
23
4
5
6
3Z
3
4
7
7H1
2
3
4
5H
7H6H
P1H
P
1
2
3
4
56
5Z
1
2
3
4
56
9H
1
Z
1
3
4
5
6
1Z
1
2
5
2Z
1
2
34
5
6
1
2
3
4
5
6
7
8
98ZH
2ZH
12H
9H
L1L2
L1L2
BH-12
BH-35
BH-5
BH-52
-55
BH-D
ED
EE
IE
II
IJ
IK
IL
IM
IN
IT
IW
S1-4
S1-6
SG
SH
SU
SV
SW
SY
748000 749000 750000 751000 752000 753000 754000 755000 756000
757000 758000 759000 760000 761000 762000 763000 764000
748000 749000 750000 751000 752000 753000 754000 755000 756000
757000 758000 759000 760000 761000 762000 763000 764000
2
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21260002128000
21300002132000
21340002136000
2138000
0 500 1000 1500 2000 2500m
1:70000
MHS : B Top Structure Contour Map
Studies for field redevelopment
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20
Scheme Forecast, MMt % RF by 2030
Base 134.9 25.0MH NorthPhase-I
Scheme 158.2 29.2
Base 286.7 29.3MH SouthPhase-I
Scheme 320.6 32.8
Base 156.9 29.0MHN A1 Layer
Scheme 160.4 29.7
IOR Schemes Western Offshore Fields
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21
IOR Schemes Western Offshore Fields
Scheme Forecast, MMt % RF by 2030
Base 158.4 29.3MH NorthPhase-II
Base 318.4 32.5
SchemeRCE
337.6
Scheme 178.2 32.2
34.5
MH SouthPhase-II
Base 25.0 20.2HeeraRedevelopment
Scheme 35.7 28.9
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22
Reserves Improvement: Mumbai High
0.001
0.010
0.100
1.000
10.000
0 25 50 75 100 125 150
W
O
R
Cum.Oil, MMt
Water Oil Ratio Vs. Cum Production
Start of Redevelopment Phase-I
MHN:Oil rate vs Oil production
0
20000
40000
60000
80000
100000
120000
140000
0 25 50 75 100 125 150 175 200
Np, MMt
B
O
P
D
Start of Redevelopment Phase-I
0.001
0.010
0.100
1.000
10.000
0 50 100 150 200 250 300Cum.Oil, MMt
W
O
R
Water Oil Ratio Vs. Cum Production
Start of Redevelopment phase
MHS: oil Rate Vs cummulative production
0
50000
100000
150000
200000
250000
300000
350000
400000
0 50 100 150 200 250 300 350 400
Np, MMt
B
O
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D
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23
050000
100000150000200000250000300000350000400000450000500000
M
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M
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0
Initial Development
WI, ADBHN & AORP
EORP in South & L-II Re-dev Ph-I
Re-dev Ph-II
Production Enhancement - Mumbai High
MH North Phase-I
(RFR) Phase-II MH South Phase-I (RFR)
Phase-II (RCE)
Capex, Rs Cr 3239.43 7133.39 Capex, Rs Cr 6579.25 8813.41
Incr Oil, MMt 23.25 17.35 Incr Oil, MMt 33.85 18.31
Incre.Oil 57.10 MMt
Incre.Oil 35.66 MMt
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24
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
M
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0
50
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150
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250
300
350
400
450
C
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O
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(
M
M
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BLPD BOPD Cum Oil (MMt)
Production Performance MH field
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25
Production Performance Heera field
0
20000
40000
60000
80000
100000
120000
140000
M
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80
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C
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M
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BLPD BOPD Cum Oil (MMt)
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26
Production Performance Neelam field
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
200000
M
a
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9
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M
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B
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5
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25
30
35
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45
50
C
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O
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M
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BLPD BOPD Cum Oil (MMt)
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27
Technologies Inducted
y Hi-tech wells -Horizontal, Multilateral, ERDy Rotary steerable
system (RSS) to increase
drilling efficiencyy Glycol & Synthetic Oil Base (SOBM) mud
for
efficient drillingy HGS for drilling/ workover of depleted
zonesy Enzyme breaker for horizontal drain hole
clean upy Perforated liner completion for stability of
horizontal drainholesy CTU friendly completiony Segmented,
Level-3 well completion
Continued
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28
Technologies Inducted
y Relocation of poor producers through variety of sidetracksy
CHFR y Modular rigsy Logging while drilling (LWD) y Real time
operation (RTO) monitoringy Geo-steering in thin zonesy Smart well
platforms
Continued
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29
y Improved Reservoir Model
3D-4C API
Fracture delineation & extent mapping for tracking of
Reservoir fluid movement and placement of wells optimally
y Improved well completion for prolonged oil productivity
y Electrical submersible pumps for efficient liquid lifting
y Integrated asset management (IAM) for real time surveillance
and control, OCC
y Platform mounted modular rigs
y EOR
Improved Technology Induction planned
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30
Summary
y Absorption of technological advancements in G & G,
engineering, drilling and completion of hi-tech wells has boosted
the production and improved recovery.
y Life cycle approach has helped to continue production and
recovery improvement from the matured offshore fields.
y With integration of the experience gained and leveraging
state-of-the art technology, it is envisioned that it will be
possible to improve performance and further enhance the oil
recovery.
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31
Thanks for Kind Attention
Showcasing Indian fields OffshoreMumbai Offshore
BasinInitiatives: IOR/ EORChallenges, Process & Technologies
Western offshore challengesMulti-layers of Mumbai High Geological
Cross Sections Showing Layer wise Porosity and Permeability
DistributionMumbai High Development HistoryRenewed Development
Strategy IOR Schemes Western Offshore Fields Technologies
InductedTechnologies InductedImproved Technology Induction planned
SummaryThanks for Kind Attention
