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通过对吐哈盆地煤系地层中下侏罗统煤岩、炭质泥岩、原油饱和烃组分的有机组分分析,获得以下认识:具有共同的特征生物标志化合物:γ-羽扇烷、异降松香烷、C24-四环二萜烷、高丰度C29甾烷,表明它们具有相同的高等植物母质来源。较高Pr/Ph比值、以及γ-蜡烷相对丰度很低等指示环境的参数具有一致性,说明它们的早期沉积环境相同,都是水质偏淡的弱氧化—弱还原环境。甾烷异构化参数C29-ββ/(ββ+αα)在研究的低演化煤岩及炭质泥岩(Ro:0.47～0.53)中显示明显的高比值(0.294～0.489),显示岩样在成岩过程中曾遭受过比较强烈的微生物作用,因此,煤岩早期的微生物作用可能是煤系地层早期生烃的动因。
Through the organic component analysis of the coal and rock, carbonaceous mudstone and crude oil saturated hydrocarbon in the Lower Jurassic coal-bearing strata of the Turpan-Hami Basin, the following knowledge is obtained: the common characteristic biomarker compounds are γ-lupine, Rosin, C24-tetracyclic diterpenes, and high abundance C29 steranes, indicating that they have the same source of higher plant parent material. The higher Pr / Ph ratio and the lower relative abundance of γ-wax alkanes indicate consistent environmental parameters, indicating that their early depositional environments are the same and both are weakly oxidized-weakly reduced environments with low water quality. The isomerization parameter C29-ββ / (ββ + αα) showed a significant high ratio (0.294-0.489) in the studied low-evolution coal and carbonaceous mudstone (Ro: 0.47-0.53) In the process, it had been subjected to relatively strong microorganisms. Therefore, the early microbial action of coal and rock may be the motivation of early hydrocarbon generation in coal measures.