摘要
本文在现有地质资料分析的基础上,首先从天然气组分、气态烃碳同位素、非烃气同位素、天然气轻烃及伴生凝析油等方面系统剖析了塔里木盆地中天然气的地球化学特征,提出了三大类五亚类的天然气成因分类方案。然后,依据不同类型天然气在盆地中的分布和控制因素的差异,对三大类天然气赋存区内的气聚集区带进行了划分,总结了塔里木盆地天然气的总体分布格局。
Based on analyses of large quantity geochemical and geological data, this paper firstly demonstrates geochemical characteristics in the aspects of gas composition, stable isotopes of hydrocarbon and nonhydrocarbon gases, gas associated light hydrocarbons and condense oil in Tarim Basin. Natural gas ge- netic type may be divided into three main types and five sub-types. Subsequendy, the gas accumulation belt and zone are individually distributed in three major areas according to different geological controlling factors.
关键词
塔里木盆地
天然气
地球化学
聚集
Natural gas, geochemistry, spatial distribution, Tarim Basin
