Kutei Basin Fold and Thrust Belt
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Table of Assessment Unit 38170103
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115 120
Malaysia Celebes
Indonesia Sea
Geologic Summary
Detailed map of this assessment unit
0
Assessment Input Data
#
it
Stra
Assessment Results
ar
Assessment Unit Summary
ass
Mak
Detailed Assessment Results
Kalimantan Sulawesi Undiscovered Field-Size Distributions
0 100 200 KILOMETERS
Kutei Basin Fold and Thrust Belt Assessment Unit 38170103
Kutei Basin Geologic Province 3817
U.S. GEOLOGICAL SURVEY WORLD PETROLEUM
ASSESSMENT 2000— DESCRIPTION AND RESULTS
U.S. Geological Survey World Energy Assessment Team
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USGS PROVINCE: Kutei Basin (3817) GEOLOGIST: P.J. McCabe
TOTAL PETROLEUM SYSTEM: Kutei Basin (381701)
ASSESSMENT UNIT: Kutei Basin Fold and Thrust Belt (38170103)
DESCRIPTION: A fold and thrust belt of Oligocene to Miocene deepwater and deltaic strata.
SOURCE ROCKS: Condensed intervals in the Oligocene bathyal strata; possibly lacustrine
strata in the underlying Eocene rift deposits.
MATURATION: Late Oligocene to earliest Miocene before the main inversion tectonics of the
early-mid-Miocene.
MIGRATION: Upwards along faults?
RESERVOIR ROCKS: The only field discovered to date is in Oligone carbonates but deltaic
sandstones are also possible reservoirs.
TRAPS AND SEALS: Anticlines, fault seals.
PETROLEUM INDUSTRY ACTIVITY: One gas field (Kerenden) discovered in 1982.
Dense jungle makes exploration difficult.
REFERENCES:
Chambers, J.L.C., and Daley, T.E., 1997, A tectonic model for the onshore Kutai Basin, east
Kalimantan, in Fraser, A.J., Matthews, S.J., and Murphy, R.W., eds., Petroleum geology
of Southeast Asia: Geological Society Special Publication 126, p. 375-393.
Moss, S.J., Chambers, J., Cloke, I., Satria, D., Ali, J.R., Baker, S., Milsom, J., and Carter, A.,
1997, New observations on the sedimentary and tectonic evolution of the Tertiary Kutai
Basin, east Kalimantan, in Fraser, A.J., Matthews, S.J., and Murphy, R.W., eds.,
Petroleum geology of Southeast Asia: Geological Society Special Publication 126,
p. 395-416.
U.S. GEOLOGICAL SURVEY WORLD PETROLEUM
ASSESSMENT 2000— DESCRIPTION AND RESULTS
U.S. Geological Survey World Energy Assessment Team
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ASSESSMENT 2000— DESCRIPTION AND RESULTS
Table of U.S. Geological Survey World Energy Assessment Team
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114 115 116 117 118
Malaysia
Indonesia
3817
38170103
it
rt a
1
r S
3835 s a
3804 s
a ka
100 KILOMETERS
M
Kutei Basin Fold and Thrust Belt
Assessment Unit - 38170103
EXPLANATION
Hydrography
Shoreline
3817 Geologic province code and boundary
Country boundary
Gas field centerpoint Assessment unit
Oil field centerpoint 38170103
code and boundary
Projection: Robinson. Central meridian: 0
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SEVENTH APPROXIMATION
NEW MILLENNIUM WORLD PETROLEUM ASSESSMENT
DATA FORM FOR CONVENTIONAL ASSESSMENT UNITS
Date:………………………….. 7/29/99
Assessment Geologist:…….. P.J. McCabe
Region:……………………….. Asia Pacific Number: 3
Province:……………………… Kutei Basin Number: 3817
Priority or Boutique.………… Priority
Total Petroleum System:…… Kutei Basin Number: 381701
Assessment Unit:…………… Kutei Basin Fold and Thrust Belt Number: 38170103
* Notes from Assessor Field not grown.
CHARACTERISTICS OF ASSESSMENT UNIT
Oil (<20,000 cfg/bo overall) or Gas (>20,000 cfg/bo overall):… Oil
What is the minimum field size?………. 5 mmboe grown (>1mmboe)
(the smallest field that has potential to be added to reserves in the next 30 years)
Number of discovered fields exceeding minimum size:………… Oil: 0 Gas: 1
Established (>13 fields) Frontier (1-13 fields) X Hypothetical (no fields)
Median size (grown) of discovered oil fields (mmboe):
1st 3rd 2nd 3rd 3rd 3rd
Median size (grown) of discovered gas fields (bcfg):
1st 3rd 2nd 3rd 3rd 3rd
Assessment-Unit Probabilities:
Attribute Probability of occurrence (0-1.0)
1. CHARGE: Adequate petroleum charge for an undiscovered field > minimum size……………… 1.0
2. ROCKS: Adequate reservoirs, traps, and seals for an undiscovered field > minimum size…… 1.0
3. TIMING OF GEOLOGIC EVENTS: Favorable timing for an undiscovered field > minimum size 1.0
Assessment-Unit GEOLOGIC Probability (Product of 1, 2, and 3):……...…….....…. 1.0
4. ACCESSIBILITY: Adequate location to allow exploration for an undiscovered field
> minimum size……………………………………………………..………………..……..………… 1.0
UNDISCOVERED FIELDS
Number of Undiscovered Fields: How many undiscovered fields exist that are > minimum size?:
(uncertainty of fixed but unknown values)
Oil fields:…………………………………min. no. (>0) 1 median no. 12 max no. 37
Gas fields:……………………………….min. no. (>0) 1 median no. 15 max no. 45
Size of Undiscovered Fields: What are the anticipated sizes (grown) of the above fields?:
(variations in the sizes of undiscovered fields)
Oil in oil fields (mmbo)………………..……min. size 5 median size 13 max. size 500
Gas in gas fields (bcfg):……………………min. size 30 median size 80 max. size 3000
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ASSESSMENT 2000— DESCRIPTION AND RESULTS
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Assessment Unit (name, no.)
Kutei Basin Fold and Thrust Belt, 38170103
AVERAGE RATIOS FOR UNDISCOVERED FIELDS, TO ASSESS COPRODUCTS
(uncertainty of fixed but unknown values)
Oil Fields: minimum median maximum
Gas/oil ratio (cfg/bo)………………………...……… 1400 2800 4200
NGL/gas ratio (bngl/mmcfg)…………………....…. 30 60 90
Gas fields: minimum median maximum
Liquids/gas ratio (bngl/mmcfg)….…………..…….. 15 25 35
Oil/gas ratio (bo/mmcfg)………………………….…
SELECTED ANCILLARY DATA FOR UNDISCOVERED FIELDS
(variations in the properties of undiscovered fields)
Oil Fields: minimum median maximum
API gravity (degrees)…………………….…………. 20 35 47
Sulfur content of oil (%)………………………...….. 0.05 0.1 0.15
Drilling Depth (m) ……………...…………….…….. 500 2500 6000
Depth (m) of water (if applicable)……………...…..
Gas Fields: minimum median maximum
Inert gas content (%)……………………….....…… 1
CO2 content (%)……………………………….....… 5
Hydrogen-sulfide content (%)………………...……. 0
Drilling Depth (m)…………………………………… 500 2500 6000
Depth (m) of water (if applicable)………………….
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ASSESSMENT 2000— DESCRIPTION AND RESULTS
U.S. Geological Survey World Energy Assessment Team
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Assessment Unit (name, no.)
Kutei Basin Fold and Thrust Belt, 38170103
ALLOCATION OF UNDISCOVERED RESOURCES IN THE ASSESSMENT UNIT
TO COUNTRIES OR OTHER LAND PARCELS (uncertainty of fixed but unknown values)
1. Indonesia represents 100 areal % of the total assessment unit
Oil in Oil Fields: minimum median maximum
Richness factor (unitless multiplier):……….…..…
Volume % in parcel (areal % x richness factor):… 100
Portion of volume % that is offshore (0-100%)…… 0
Gas in Gas Fields: minimum median maximum
Richness factor (unitless multiplier):…………..….
Volume % in parcel (areal % x richness factor):… 100
Portion of volume % that is offshore (0-100%)…… 0
Page 3 U.S. GEOLOGICAL SURVEY WORLD PETROLEUM
ASSESSMENT 2000— DESCRIPTION AND RESULTS
U.S. Geological Survey World Energy Assessment Team
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Kutei Basin Fold and Thrust Belt, AU 38170103
Undiscovered Field-Size Distribution
6
Minimum field size: 5 MMBO
UNDISCOVERED OIL FIELDS (No.)
5
Mean number of
undiscovered fields: 13.4
0
4-<8 8-<16 16-<32 32-<64 64-<128 128-<256 256-<512 512-<1024 1024- 2048-
<2048 <4096
OIL-FIELD SIZE (MMBO)
U.S. GEOLOGICAL SURVEY WORLD PETROLEUM
ASSESSMENT 2000— DESCRIPTION AND RESULTS
U.S. Geological Survey World Energy Assessment Team
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Kutei Basin Fold and Thrust Belt, AU 38170103
Undiscovered Field-Size Distribution
7
Minimum field size: 30 BCFG
6
UNDISCOVERED GAS FIELDS (No.)
Mean number of
undiscovered fields: 16.7
5
0
24-<48 48-<96 96-<192 192-<384 384-<768 768-<1536 1536- 3072- 6144- 12288-
<3072 <6144 <12288 <24576
GAS-FIELD SIZE (BCFG)
U.S. GEOLOGICAL SURVEY WORLD PETROLEUM
ASSESSMENT 2000— DESCRIPTION AND RESULTS
U.S. Geological Survey World Energy Assessment Team
