Numerical Simulation of Petroleum Generation, Migration and Accumulation of the Es₃ Formation in Banqiao Depression

• 责任者：Guo Xiaowen (Key Laboratory of Tectonics and Petroleum Resources of the Ministry of Education ; China University of Geosciences ; Wuhan 430074 ; China) ; He Sheng
• 刊名：Earth Science
• 出版年：2010
• 卷期：35(1)
• 关键词：砂岩储集层 ; sandstone reservoirs ; 油气藏形成 ; reservoir formation ; 黄骅坳陷 ; Huanghua Depression
• 页码：p.115-124
• 图表：8 illus., 29 refs.
• 分类号：1003
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

///The mudstones of the Es₃ formation in Banqiao depression are the dominant source rocks for the major hydrocarbon accumulations and the sandstones of Es₃ formation are major reservoir rocks. Petroleum generation, migration and accumulation history of the Es₃ formation in Banqiao depression are modelled based on reconstruction of the burial, thermal and maturity history in this paper. The modelling results indicate that: 1) the present-day heat flow in Banqiao depression varies from 59.8 to 61.7 mW/m² and that the paleoheat flow increased from 65 to 50.4 Ma, reaching peak heat flow values at 50.4 Ma then decreased with from 50.4 to 0 Ma; 2) the source rocks maturity of Es₃ formation ranges from 0.75% to 1.8% Ro at present day and from 0.5% to 1.25% R_o at the end of the Ed formation deposition; 3) the timing of hydrocarbon expulsion from Es₃ formation source rocks began from 31 Ma, the predominant phase of hydrocarbon expulsion is from 31 to 26 Ma and the phase of less hydrocarbon expulsion is from 26 to 0 Ma; and 4) secondary petroleum migration pathways of Es₃ formation of Banqiao depression at present and 26 Ma are controlled by the paleo-structure surface and the spreading flowing, confluence flowing and the planar flowing occur in depression zone, the gentle slope zone and the steep slope zone respectively.