Title: Main Controlling Factors of Hydrocarbon Accumulation of Complex Fault-block Group in the North Slope of Biyang Depression
Abstract: In the north slope of Biyang Depression,hydrocarbon source rocks were predominantly dark shale and sandy shale in the 3rd member of Paleogene Hetaoyuan Formation,with the TOC average content of 1.77% and kerogens of typeⅠand Ⅱ1;Reservoir rocks were mainly composed of sandstone and fine sandstone in the 3rd member of Paleogene Hetaoyuan Fm,with the porosity of 20~35% and permeability of 150~900×10-3μm2;The types of oil pools were mainly composed of fault-block,fault-nose and composite oil pools of fault plus lithology.The north slope hydrocarbon accumulation process is controlled dominantly by structural evolution,rupture growth,sedimentary facies,temperature-pressure field and fluid potential.Structural evolution and fluid potential control the direction of migration and accumulation of oil and gas;the distribution of rupture and sand controls the mode of migration and accumulation of oil and gas and enrichment extent.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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Cited By Count: 1
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