Characteristics of Paleo Oil Pools from Sinian to Lower Paleozoic in Southeastern Margin of Sichuan Basin
详细信息
- 责任者：Huang Wenming (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Liu Shugen
- 刊名：Geological Review
- 出版年：2011
- 卷期：57(2)
- 关键词：油气藏形成 ; reservoir formation ; 四川盆地 ; Sichuan Basin
- 页码：p.285-299
- 图表：10 illus., 1 table, 32 refs.
- 分类号：1003
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
摘要
Based on the surface geological investigation, thin sections study of profile and wells, this paper analyzed the characteristics and the relationship of reservoir bitumen with other minerals in outcrops, drilling cores by microscope, and had an oil to source correlation by geochemical methods. The formation time of the first generation bitumen of the Sinian is Caledonian, and formation time of the second generation bitumen of the Sinian and bitumen is from the Cambrian to Permian, is from high temperature cracking in Indosinian-Yanshanian. The gas from oil cracking is one of the most important gas resources from the Sinian to Lower Paleozoic (including Permian), and the Ordovician and Silurian has favorable exploration prospective, owing to transformational migration of oil cracking gas in the Sichuan Basin, especially in eastern Sichuan Province and eastern Chongqing.
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