GAS GEOCHEMICAL CHARACTERISTICS OF PLATFORM-BASIN REGION IN TARIM BASIN
Received date: 2007-10-10
Revised date: 2007-11-05
Online published: 2008-06-20
Based on the analysis of gas samples of the Tarim basin，the gas geochemical characteristics of the platform basin region are summarized systematically.The hydrocarbon composition of natural gases is mainly wet gas in the platform basin region of the Tarim basin，and dry gas in some areas.The wet gas is distributed in central Tarim basin，Mandong-Yingjisu，Yingmaili，Donghetang，Harderson and Jiefangqudong-Jilake. And Bachu and Lunnan Sangtamu have both wet gas and dry gas.As for nonhydrocarbon components，nitrogen gas and carbon dioxide are dominant.Most areas in Bachu，central Tarim，Mandong Yingjsu，Donghetang Yingmaili，Harderson are characterized by the medium high content of N2，and natural gases in Hetian River and Donghetang have high content of CO2.The carbon isotope distribution of natural gas is characterized by light at the central part and heavier in the peripheral areas.The carbon isotope value of ethane is lower than -40‰ in central Tarim，Donghetang\|Yingmaili and Harderson，and higher than -40‰ in Hetian River，Mandong Yingjili，Lunnan Jilake.The carbon isotope value of ethane is generally higher than -30‰.
Key words： tarim; Platform-basin region; Natural gas; Geochemistry.
XIAO Zhong-yao,;CUI Hui-ying ;XIE Zeng-ye ;MA De-ming . GAS GEOCHEMICAL CHARACTERISTICS OF PLATFORM-BASIN REGION IN TARIM BASIN[J]. Natural Gas Geoscience, 2007 , 18(6) : 782 -788 . DOI: 10.11764/j.issn.1672-1926.2007.06.782
[1] 戴金星.天然气地质和地球化学论文集（卷二）［M］.北京：石油工业出版社，2000.
［2］徐永昌.天然气成因理论及应用［M］.北京：科学出版社，1994.
［3］Schoell M.The hydrogen and carbon isotopic composition of methane from natural gases of various origin［J］.Geochimica et Cosmochimica Acta，1980，44：649-662.
［4］郑淑蕙,郑斯成,莫志超.稳定同位素地球化学分析［M］.北京：北京大学出版社，1986.
［5］Rooney M A，Cloypool G E，Chung H M.Modeling thermogenic gas generation using carbon isotope ratios of natural gas hydrocarbons［J］.Chemical Geology ,1995,126: 219-232.
［6］Schoell M.The hydrogen and carbon isotopic composition of methane from natural gases of various origin［J］.Geochimica et Cosmochimica Acta，1980，44：649-662.
［7］卢家烂.干酪根成烃模拟实验及其应用［M］//傅家谟，秦匡宗.干酪根地球化学.广州：广东科技出版社，1995.
［8］Behar F，Kress mann S.Experimental simulation in confined system and kinetic of kerogen and oil cracking［J］.Organic Geochemistry，1991,19: 173-189.
［9］Machel H G，Krouse H R，Riciputi L R.The Devonian Nisku sour gas play，Canada-A unique natural laboratory for study of thermochemical sulfate reduction［C］//Vairavamurthy M，Schoonen M A A.Geochemical Transformations of Sedimentary Sulfate.American Chemical Society Symposium Series,612,1995:439-454.
［10］Worden R H，Smalley PC，Oxtoby，NH.Gas souring by thermochemical sulfate reduction at 140℃［J］.AAPG Bulletin，1995,79: 854-863.
［11］Cai Chunfang，Richard H Worden，Wang Qinghua，et al.Chemical and isotopic evidence for secondary alteration of natural gas in the Hetianhe Field，Bachu Uplift of the Tarim Basin［J］.Organic geochemistry，2002,33: 1415-1427.
［12］谢增业.川东北地区下三叠纪飞仙关组鲕滩气藏成藏机理及成藏模式研究[D].中国地质大学博士论文，2003.
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号