摘要
本文通过10个含油气盆地的160多个天然气样品,进行了甲烷碳、氢同位素分析,其结果可将天然气划分为五种类型,即生物气、生物-热催化过渡气、石油伴生气、凝析油伴生气和煤型气。其同位素组成与沉积盆地的沉积环境、有机质类型、热演化阶段和各种气藏形成的特征密切相关。通过对我国陆相成因天然气碳、氢同位素研究,探讨其同位素组成特征及其意义,从而为各种成因类型天然气的勘探开发提供了有益的信息。
The C and H isotopic composition of methane in more than 160 gas samples from 10 basins in China was analyzed. On the basis of the results the gases are divided into five types: biogenic gas, bio-thermocatalytic gas, gas associated with condensate and coal-type gas. The isotopic composition of these gases is related to different environments of depositional basins, the type of organic matter, the stage of thermorevolution and characteristics of formation of different gas reservoirs. Studies of the C and H isotopic composition of natural gases of continental origin will provide valuable information on the prospecting and development of natural gases of different genetic types.
出处
《地球化学》
CAS
CSCD
北大核心
1991年第2期144-152,共9页
Geochimica
