Talang Akar-Cibulakan( ) petroleum systems, Arjuna Basin, offshore Northeast Java, Indonesia
- Atlantic Richfield Indonesia Inc., Jakarta (Indonesia)
- ARCO International Oil and Gas Co., Plano, TX (United States); and others
The Talang Akar-Cibulakan( ) petroleum systems occur in the Arjuna basin, one of a series of basins on the southern edge of the Sunda craton originating during a major Eocene-Oligocene period of extension. Total in-place hydrocarbons of 2.5 BBO and 3 TCFG have been discovered since 1968. Over 1000 wells have been drilled, and 1 BBO and 1.1-TCFG have been produced from 70 fields. Major reservoirs are Upper Oligocene to Lower Miocene fluvial sandstones of the Talang Aker Formation and Middle to Upper Miocene shallow-marine sandstones of the Cibulakan Formation. Geochemical analyses indicate that Talang Aker coals and shales are the principal source of hydrocarbons in this prolific petroleum systems. This source interval has thicknesses from <125 m on flanks and highs to > 600 m in the axis of the basin. These source rocks contain main; terrestrially-derived organic mater but source quality varies considerably. Carbonaceous shales are mainly gas prone while liptinite-enriched coals are good oil and gas source rocks. Geohistory modelling indicates that hydrocarbon generation was initiated by Middle Miocene (15 mya) and reached its peak at Upper Miocene (10 mya). Primary migration at Middle Miocene resulted in hydrocarbon charge of interbedded reservoir rocks. Secondary migration since post-Upper Miocene, concurrent with renewed tectonism, has been mainly vertical through fault-related fractures. Basin-wide source rock and hydrocarbon characteristics, in combination with structural and stratigraphic framework, define these supercharged and vertically drained petroleum systems.
- OSTI ID:
- 6586346
- Report Number(s):
- CONF-960527-; CODEN: AABUD2
- Journal Information:
- AAPG Bulletin, Vol. 5; Conference: Annual convention of the American Association of Petroleum Geologists, Inc. and the Society for Sedimentary Geology: global exploration and geotechnology, San Diego, CA (United States), 19-22 May 1996; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
Similar Records
Depositional environments and source rock investigations of the Oligocene to Middle Miocene deposits in the Ardjuna Basin, offshore Northwest Java, Indonesia
Petroleum geology of South Sumatra, Indonesia
Related Subjects
03 NATURAL GAS
INDONESIA
NATURAL GAS DEPOSITS
OIL FIELDS
SEDIMENTARY BASINS
NATURAL GAS
PRODUCTION
PETROLEUM
ASIA
DEVELOPING COUNTRIES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
ISLANDS
MINERAL RESOURCES
PETROLEUM DEPOSITS
RESOURCES
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration