中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Methanogenic pathway of the Quaternary biogenic gases in the Qaidam basin, China

文献类型:期刊论文

作者Zhang, XB; Song, CP; Qi, YL; Duan, Y; Li, XF; Ma, LY; Zhang, MZ
刊名GEOCHEMICAL JOURNAL
出版日期2005
卷号39期号:5页码:411-416
关键词Biogenic Gas Co2 Reduction Pathway Qaidam Basin
ISSN号0016-7002
文献子类Article
英文摘要The Quaternary biogenic gas province in the east of the Qaidam basin is the largest biogenic gas province in China. We collected 21 gas samples from the different gas pay beds of the Sebei 1 gas field and the Sebei 2 gas field, measured their chemical compositions and carbon isotopes, and emphatically discuss their methanogenic pathway and significance. The CH, and CO2 of the biogenic gases were enriched in C-13 with increasing depth, which indicates that the gases are CO2 reduction-derived gases. The delta C-13(1), delta C-13(CO2) and delta D values of the biogenic gases approximate the range of the corresponding values of CO2 reduction gases. The values fall in the CO2 reduction field on genetic diagrams based on delta C-13(1), 313 C-CO2 and delta D values of natural gases. The fractionation coefficients (alpha c) of the carbon isotope of the CH4 and CO2 of the biogenic gases are more than 1.005, characteristic of a CO2 reduction pathway. During the Quaternary due to the dry climate, low temperature, high sedimentation rate and a high content of sulfate in the east of the Qaidam basin, methane bacteria could not propagate until sediments were buried at deeper depth. These conditions benefit a CO2 reduction pathway of the gases. These results are of importance in discussing the biogenic gas origin and formation conditions, determining the methods and conditions for biogenic gas simulation, accessing biogenic gas reserves, establishing a poolforming model and selecting targets for natural gas exploration.
WOS关键词METHANE ; SEDIMENTS ; ORIGINS ; SEA ; CO2
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000233265500003
出版者GEOCHEMICAL SOC JAPAN
源URL[http://ir.iggcas.ac.cn/handle/132A11/65142]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, XB
作者单位1.Chinese Acad Sci, Lanzhou Inst Geol, Inst Geol & Geophys, Lanzhou 730000, Gansu, Peoples R China
2.Univ Sci & Technol China, Grad Sch, Hefei 100049, Peoples R China
3.Lanzhou Univ, Inst Resource & Environm, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Zhang, XB,Song, CP,Qi, YL,et al. Methanogenic pathway of the Quaternary biogenic gases in the Qaidam basin, China[J]. GEOCHEMICAL JOURNAL,2005,39(5):411-416.
APA Zhang, XB.,Song, CP.,Qi, YL.,Duan, Y.,Li, XF.,...&Zhang, MZ.(2005).Methanogenic pathway of the Quaternary biogenic gases in the Qaidam basin, China.GEOCHEMICAL JOURNAL,39(5),411-416.
MLA Zhang, XB,et al."Methanogenic pathway of the Quaternary biogenic gases in the Qaidam basin, China".GEOCHEMICAL JOURNAL 39.5(2005):411-416.

入库方式: OAI收割

来源:地质与地球物理研究所

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