成都理工大学学报（自然科学版）2017，Vol.44Issue(2)：149-157,9.DOI:10.3969/j.issn.1671-9727.2017.02.03
渤中凹陷西次洼浅层晚期快速充注成藏模式
Preliminary discussion on late stage rapid petroleum accumulation pattern in the western subsag of Bozhong depression,Bohai Bay, China
摘要
Abstract
Through the studies of maturity simulation of hydrocarbon source rock,analysis of oil geochemistry and oil source relations,distribution characteristics of fluid inclusions and measurement of its homogenization temperatures by fluid inclusions,combined with comprehensive analysis of accumulation elements,such as fault closure and pathway systems,the controlling factors of hydrocarbon accumulation and its accumulation mechanism for Neogene reservoir in the western subsag of Bozhong depression in Bohai Bay are discussed.It reveals that there exist three sets of hydrocarbon source rocks,they are the 1st Member and 3rd Member of the Shahejie Formation and the 3rd Member of the Dongying Formation,and the 3rd Member of Shahejie Formation is high quality and high maturity.The oil maturity of hydrocarbon source rock in the area is generally high,and the crude oil is formed in the generation peak period and later period,mainly related to the 3rd Member of Shahejie Formation.The study shows that the hydrocarbon in the pores of sand reservoir as well as petroleum inclusions in the No.8 area of Bozhong display blue-white fluorescence color,with lower oil and gas inclusions abundance (GOI).These inclusions are mainly formed in one phase and the homogenization temperatures show that they occur after the time of 3.5 Ma B.P.or 1.0 Ma B.P.,indicating that the oil and gas filled and accumulated in the later period.It is considered that the main factors controlling the reservoir formation are rapid and continues generation of hydrocarbon,abundant supply of hydrocarbon source,effective fault transport system.Therefore,a reservoir forming model of highly active supply of hydrocarbon,fault controlled reservoir generation and superficial accumulation is proposed.关键词
烃源灶/包裹体/油气充注/晚期成藏/渤中凹陷Key words
hydrocarbon source/inclusions/oil and gas charge/late accumulation/Bozhong depression分类
能源科技引用本文复制引用
姚佳,陈保柱,张新涛,徐春强,郭瑞..渤中凹陷西次洼浅层晚期快速充注成藏模式[J].成都理工大学学报（自然科学版）,2017,44(2):149-157,9.基金项目
“十二五”国家科技重大专项(2011ZX05023-002). （2011ZX05023-002）
