Distribution and Characteristics of the Homohopane Molecular Parameters in Paleogene System of the Dongying Sag
详细信息
- 责任者：Chen Zhonghong (China University of Petroleum ; Qingdao 257061 ; China) ; Zha Ming
- 刊名：Acta Sedimentologica Sinica
- 出版年：2011
- 卷期：29(1)
- 关键词：生物标志化合物 ; biomarkers ; 烃源岩 ; source rocks ; 东营凹陷 ; Dongying Sag
- 页码：p.173-183
- 图表：5 illus., 1 table, 34 refs.
- 分类号：1003
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
The Paleogene system in the Dongying Sag is a representative lacustrine basin in the eastern China. To investigate the distribution and characteristics of the homohopane maturation parameters, the main source rocks from Member 3 (deposited in fresh and brackish water) and Member 4（deposited in salty water） in Shahejie Formation (burial depth from 1 300 m to 4 000 m) were investigated. The range 2 800~4 200 m coincides with the "oil window" from the early of oil generation to the late of oil generation, which can well represent the evolution of homohopane maturation parameters during the process of oil generation. The results demonstrate that the main controlling factors for the distribution of C31, C32, C33, C34, C35（17α） homohopane parameters are the isomerization and different decomposition rates as well as generation rates between different isomers.
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