The Combination Characteristics of the Biomarkers of Microbial Degradation of Organic Matter in Low-Evolution Source-Rock
详细信息
- 责任者：Wang Zuodong (Key Laboratory of Petroleum Resources Research ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Meng Qianxiang
- 刊名：Acta Sedimentologica Sinica
- 出版年：2010
- 卷期：28(6)
- 关键词：烃源岩 ; source rocks ; 生物降解作用 ; biodegradation ; 吐哈盆地 ; Tu-Ha Basin
- 页码：p.1244-1249
- 图表：3 illus., 4 tables, 11 refs.
- 分类号：1003
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
Researched the distributing characteristics of biomarkers of low-evolution source rocks in Turpan-Hami Basin, the organic matter has been transformed by microorganism. The result shows: the bacterium-microorganism acting on deposit organic matter relative strength, there is a "quasi-stepwise" sequence to describe the general order of susceptibility of various biomarker compound classes to biodegradation, that is n-alkanes > acyclic isoprenoids > hopanes > steranes > aromatic hydrocarbon, C29ββ /(ββ + αα) and 9-MP/ΣMP are sensitive parameters to the reforming of bacterium-microorganism effect on organic matter. The characteristic of source rock organic matter would be changed by the reforming of bacterium microorganism in the study area, these changes will enable decreasing the activation energy of hydrocarbon generated, and they are favorable for low-mature gas (oil) generation.
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