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外文会议>"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
>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
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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
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.
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