Petroleum systems of the Northwest Java Province, Java and offshore southeast Sumatra, Indonesia

Michele G. Bishop

doi:10.3133/ofr9950r

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Petroleum systems of the Northwest Java Province, Java and offshore southeast Sumatra, Indonesia

Michele G. Bishop

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Abstract

Mature, synrift lacustrine shales of Eocene to Oligocene age and mature, late-rift coals and coaly shales of Oligocene to Miocene age are source rocks for oil and gas in two important petroleum systems of the onshore and offshore areas of the Northwest Java Basin. Biogenic gas and carbonate-sourced gas have also been identified. These hydrocarbons are trapped primarily in anticlines and fault blocks involving sandstone and carbonate reservoirs. These source rocks and reservoir rocks were deposited in a complex of Tertiary rift basins formed from single or multiple half-grabens on the south edge of the Sunda Shelf plate. The overall transgressive succession was punctuated by clastic input from the exposed Sunda Shelf and marine transgressions from the south. The Northwest Java province may contain more than 2 billion barrels of oil equivalent in addition to the 10 billion barrels of oil equivalent already identified.

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Source-reported bounding extent: -6.795535025719518° to -0.7470491450051796° latitude; 105.205078125° to 114.3896484375° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Michele G. Bishop. 2000. Petroleum systems of the Northwest Java Province, Java and offshore southeast Sumatra, Indonesia. https://doi.org/10.3133/ofr9950r

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