2016, 35(4) 1052-1057 DOI: ISSN: 1004-5589 CN: 22-1111/P | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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Petroleum geology features and exploration potential analysis of South Sumatra Basin | |||||||||||||||||||||||||||||||||||||||||||||||||||||
LU Xiao-Xin, REN Huai-Jian, ZHOU Guo-Wen, LIU Hou-Wu | |||||||||||||||||||||||||||||||||||||||||||||||||||||
1�� Sinochem Petroleum Exploration and Production Co.��Ltd.��Beijing 100031��China; 2�� CNPC Great Wall Drilling Company Ltd.��Beijing 100101��China | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Abstract��
Based on the data collected from various sources and applying the theories and methods of basin analysis��this paper summarizes the tectonic-sedimentation evolution and petroleum geology characteristics of South Sumatra Basin��discusses the oil and gas distribution patterns and analyzes its hydrocarbon exploration potential�� The results show that the South Sumatra Basin is a Cenozoic back-arc rift basin��experiencing 5 stages in evolution�� including pre-rifting��rifting��transition��sag and compression�� The principal source rock of the basin is carbona- ceous shale and coal depositing during the transition stage�� The main reservoirs are found in upper Oligocene sand- stones��lower Miocene carbonates and pre-Paleogene crack basement�� Generally��the hydrocarbon distribution is characterized by patterns of gas in the deeper reservoirs��oil and gas in the middle reservoirs��and oil in the shallo- wer reservoirs�� Oil and gas are enriched in the structural traps and structural combination traps�� Faults��favorable sedimentary facies of reservoirs and paleo-highs are the principal factors controlling the oil and gas distribution�� The South Sumatra Basin has good hydrocarbon accumulation conditions and favorable exploration potential�� Faulted slopes surrounding the source kitchens��paleo-highs are the advantageous exploration areas�� In addition��the strati- graphic traps and lithologic traps in the depressions are also prospecting exploration targets�� They should be studied and explored deeply�� | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Keywords�� South Sumatra Basin petroleum geology hydrocarbon distribution exploration potential | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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