Secondary Hydrocarbon-Generation Characteristics of Upper Paleozoic Source Rock in Jiyang Depression
Received date: 2007-09-05
Revised date: 2008-01-06
Online published: 2008-02-10
The upper Paleozoic underwent complicated tectonic movement after the Indo-Chinese epoch in the Jiyang depression. The characteristics of the hydrocarbon generating evolution of the upper Paleozoic source rock are inconsecutive and multiphasic. Combining the tectonic-sediment evolution history and heated history, this paper researches the upper Paleozoic source rock in the Jiyang depression by contemporary petroleum geological theory. The upper Paleozoic source rock has obvious secondary hydrocarbon-generation characteristics. The first hydrocarbon generating period is late Middle Triassic，and the most important hydrocarbon generating period is late Early Teriary in which the source rock are highly and over mature. At the same time, four types of secondary hydrocarbon-generation models are concluded.
Key words： Jiyang depression; Source rock; Evolvement; Secondary hydrocarbon-generation; Model.
FAN Kun;ZHANG Lin-yan;HUANG Chen-jun; ZHOU Xin-gui . Secondary Hydrocarbon-Generation Characteristics of Upper Paleozoic Source Rock in Jiyang Depression[J]. Natural Gas Geoscience, 2008 , 19(1) : 21 -28 . DOI: 10.11764/j.issn.1672-1926.2008.01.21
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