摘要
人工热演化生成的气态烃的δ^(13)C 值同地质体中天然气的δ^(13)C 值一样,可以反映源岩母质类型与热演化水平。本文根据8个源岩样的生气模拟实验结果归纳了气态烃产率、碳同位素组成与源岩有机质类型及成熟度间的关系,进而利用源岩热解气态烃与天然气样的δ^(13)C 值探索了塔里木与南松辽盆地的气源岩。
Experiments described in this paper show that carbon isotope composition of gaseoushydrocarbon from artificial maturation is similar to those from natural maturation.Thesame as that of natural gas,carbon isotope composition of pyrolyzed hydrocarbon can beused to indicate the type and maturity of organic matter in source rocks.Based on the re-sults of the experiments of thermal simulation of 8 source rock samples,the relationshipbetween the yield of gaseous hydrocarbon,their carbon isotopic composition and the type,the maturity of organic matter in source rock is established,and then δ^(13)C-value of boththe pyrolyzed gaseous hydrocarbon in source rock and natural gas samples are used tostudy the natural gas and source rocks in Tarim and South Songliao Basins respectively.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
1990年第3期247-259,共13页
Oil & Gas Geology
