The Geochemistry Characteristics of Overpressured Compartment and Its Controls on Hydrocarbon Migration and Accumulation: An Investigation on the Dongying Sag in the Bohaiwan Basin, China
(0) Dongying basin represents the continental deposit of faulted-lake and half graben in the eastern China. In the basin the dark mud mainly developed at the Member 4 and Member 3 of Shahejie Formation, and the overpressured systems developed in the dark mud controlled the hydrocarbon migration and accumulation. The formation of the over-pressure was a result or the unequlibrium compaction of source rocks and the hydrocarbon generation. The geochemistry characteristics indicated that the overpressured compartment can be classified into three parts: the edge of compartment (seal), the favorable release zone for hydrocarbon expulsion and the stagnant zone for hydrocarbon expulsion. The geochemistry characteristics demonstrated there were two types of overpressured systems: the open and the closed relatively, and the formation of compartment was a geochemical self-organized course. Influenced by the fluid pressure, the distribution of different types of gas reservoirs were in cyclical.
overpressured compartment source rocks hydrocarbon accumulation,self-organization faulted-basin Dongying sag.
Chen Zhonghong Zha Ming
College of Geo-resources and Information, China University of Petroleum, Dongying 257061, China
国际会议
The IPACES 6th Annual Meeting(“现代地球科学，交流与合作国际学术研讨会暨第六届IPACES学术年会)
武汉
英文
275-278
2007-04-25（万方平台首次上网日期，不代表论文的发表时间）