New Roman">Carbon and Hydrogen Isotopic Compositions: Generation Pathway of Bacterial Gas in
- 责任者：Shen Ping (Key Laboratory of Petroleum Resources Research ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Wang Xiaofeng
- 刊名：Acta Sedimentologica Sinica
- 出版年：2010
- 卷期：28(1)
- 关键词：生物气 ; biogenetic gas ; 同位素组成 ; isotope composition ; 中国 ; China
- 页码：p.183-187, 207
- 图表：3 illus., 3 tables, 11 refs.
- 分类号：1003
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
New Roman">In this paper, the forming ways and pool-forming characteristics of the biogenic gas are researched according to the carbon and hydrogen isotopic composition of thirty-one samples from ten biogenic gas reservoirs. The studies show that the hydrogen isotopic composition of these biogenic gas reservoirs can be divided into three zones. The research results show that the typical way of biogenic gas forming under marine and saline lake facies is CO2 reduction, and the biogenic gas has heavy hydrogen isotopic composition, such as the values of δDCH4 are greater than -200‰; however, the main way of biogenic gas forming under the condition of land facies is the same way too, but they have light hydrogen isotopic composition which may relate to salty degree of ancient lakes as water medium, such as the values of δDCH4 are between -200‰ and -250‰.