沉积与特提斯地质2009，Vol.29Issue(2)：77-82,6.
鄂尔多斯盆地苏里格气田上古生界天然气地球化学及成藏特征
Geochemistry and accumulation of the Upper Palaeozoic natural gas in the Sulige Gas Field, Ordos Basin
林良彪 1蔺宏斌 1侯明才 2陈洪德 1董桂玉1
作者信息
- 1. 成都理工大学,沉积地质研究院,四川,成都,610059
- 2. 中石油,长庆油田分公司,陕西,西安,710021
- 折叠
摘要
Abstract
The Sulige Gas Field is a giant litholitic gas reservoir in the Upper Palaeozoic strata in the Ordos Basin. The determinations of gas chromatography indicates a kind of humid gas with lower dryness and dominant methane. The carbon isotopes in n-alkane exhibit a trend of δ13C1＜δ13C3＜δ13C2＜δ13C4. There is a positive correlation between the carbon isotopes and methane contents, and a negative correlation between the carbon isotopes and ethane contents. The variations in the contents of carbon isotopes show that the natural gas from the Sulige Gas Field is a kind of coal-derived gas of organic origin and contains minor amount of CO2. The Permian gas reservoirs went through the deposition and burial of the source rocks during the Carboniferous-Permian to the Middle Jurassic, formation of the gas during the Late Jurassic to the Cretaceous, and preservation and modification of the gas from the Tertiary onwards.关键词
苏里格气田/上古生界/地球化学特征/成藏Key words
Sulige Gas Field/Upper Palaeozoic strata/geochemistry/gas Accumulation分类
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林良彪,蔺宏斌,侯明才,陈洪德,董桂玉..鄂尔多斯盆地苏里格气田上古生界天然气地球化学及成藏特征[J].沉积与特提斯地质,2009,29(2):77-82,6.
