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Title: Depositional environments and source rock investigations of the Oligocene to Middle Miocene deposits in the Ardjuna Basin, offshore Northwest Java, Indonesia

Abstract

Investigations of depositional environments, paleogeographic evolution, source rock potential/maturity, and petroleum generation, expulsion, migration and accumulation were performed on the Oligocene to Middle Miocene deposits in the Ardjuna Basin, offshore Northwest Java, using integrated geologic, seismic and geochemical approaches. The Oligocene to Middle Miocene sediments were deposited in a generally transgressive sequence. It is the most prospective stratigraphic unit for petroleum exploration in the Ardjuna Basin. The rocks comprise three Formations: Talang Akar, Baturaja and Cibulakan. Paleogeography of six stages within the study interval, showing the degree of marine transgression were mapped based on integrated biostratigraphic, paleoenvironmental, and seismic-stratigraphic data. The coals and carbonaceous shales deposited in the deltaic and nearshore environment of the Talang Akar Formation are petroleum source rocks for the waxy oils produced in the Ardjuna Basin. The organic matter contains predominantly vitrinite maceral and up to 30% exinite maceral. Source rock temperature, after calibration with vitrinite reflectance, provides an accurate quantitative measurement for predicting the level of thermal maturation. Two geochemical approaches were used and compared in petroleum resource assessment: petroleum yield (S1) method and genetic potential (S2) method. The oil generative kitchen, the Ardjuna depocenter, has the best opportunity for new oil discovery. This modelmore » has since been proved by subsequent drilling leading to several oil discoveries in the last two years.« less

Authors:
Publication Date:
Research Org.:
Texas Univ., Dallas, TX (United States)
OSTI Identifier:
6088082
Resource Type:
Miscellaneous
Resource Relation:
Other Information: Thesis (Ph.D)
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 01 COAL, LIGNITE, AND PEAT; COAL DEPOSITS; EXPLORATION; INDONESIA; PETROLEUM DEPOSITS; RESOURCE POTENTIAL; DEPOSITION; ENVIRONMENTAL TRANSPORT; EXINITE; GEOCHEMICAL SURVEYS; GEOLOGIC HISTORY; GEOLOGIC SURVEYS; MATURATION; ORGANIC MATTER; REFLECTIVITY; RESERVOIR TEMPERATURE; SEDIMENTARY BASINS; SEISMIC SURVEYS; SOURCE ROCKS; VITRINITE; ASIA; DEVELOPING COUNTRIES; GEOLOGIC DEPOSITS; GEOLOGIC STRUCTURES; GEOPHYSICAL SURVEYS; ISLANDS; MACERALS; MASS TRANSFER; MATTER; MINERAL RESOURCES; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RESOURCES; SURFACE PROPERTIES; SURVEYS; 020200* - Petroleum- Reserves, Geology, & Exploration; 011000 - Coal, Lignite, & Peat- Reserves, Geology, & Exploration

Citation Formats

Wu, Chiahsin Charlie. Depositional environments and source rock investigations of the Oligocene to Middle Miocene deposits in the Ardjuna Basin, offshore Northwest Java, Indonesia. United States: N. p., 1991. Web.
Wu, Chiahsin Charlie. Depositional environments and source rock investigations of the Oligocene to Middle Miocene deposits in the Ardjuna Basin, offshore Northwest Java, Indonesia. United States.
Wu, Chiahsin Charlie. 1991. "Depositional environments and source rock investigations of the Oligocene to Middle Miocene deposits in the Ardjuna Basin, offshore Northwest Java, Indonesia". United States.
@article{osti_6088082,
title = {Depositional environments and source rock investigations of the Oligocene to Middle Miocene deposits in the Ardjuna Basin, offshore Northwest Java, Indonesia},
author = {Wu, Chiahsin Charlie},
abstractNote = {Investigations of depositional environments, paleogeographic evolution, source rock potential/maturity, and petroleum generation, expulsion, migration and accumulation were performed on the Oligocene to Middle Miocene deposits in the Ardjuna Basin, offshore Northwest Java, using integrated geologic, seismic and geochemical approaches. The Oligocene to Middle Miocene sediments were deposited in a generally transgressive sequence. It is the most prospective stratigraphic unit for petroleum exploration in the Ardjuna Basin. The rocks comprise three Formations: Talang Akar, Baturaja and Cibulakan. Paleogeography of six stages within the study interval, showing the degree of marine transgression were mapped based on integrated biostratigraphic, paleoenvironmental, and seismic-stratigraphic data. The coals and carbonaceous shales deposited in the deltaic and nearshore environment of the Talang Akar Formation are petroleum source rocks for the waxy oils produced in the Ardjuna Basin. The organic matter contains predominantly vitrinite maceral and up to 30% exinite maceral. Source rock temperature, after calibration with vitrinite reflectance, provides an accurate quantitative measurement for predicting the level of thermal maturation. Two geochemical approaches were used and compared in petroleum resource assessment: petroleum yield (S1) method and genetic potential (S2) method. The oil generative kitchen, the Ardjuna depocenter, has the best opportunity for new oil discovery. This model has since been proved by subsequent drilling leading to several oil discoveries in the last two years.},
doi = {},
url = {https://www.osti.gov/biblio/6088082}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}

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