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通过对吐哈盆地煤成烃热成熟度特征与煤源岩成熟度的热演化特征对比分析，并结合煤岩各阶段吸附性强弱，论证了煤成烃的早易排而晚难排特征，提出了不同岩性组合下的煤岩排烃特点。经过石油地质的综合分析，论证了煤系地层油气运移距离短，并以垂向为主的特征。经过煤岩压力孕育史、构造运动强弱的分析，以及地层超压分布与油气藏形成时空关系的讨论，认为压力机制在煤系地层油气藏形成过程中起主导作用，泥岩超压封闭层的存在是煤系地层中油气藏形成的重要条件
Based on the comparative analysis of the thermal maturity characteristics of coal-formed hydrocarbon in the Turpan-Hami basin and the thermal evolution characteristics of the maturity of the coal source rock and the strong adsorption capacity of each stage of the coal rock, , And proposed the hydrocarbon expulsion characteristics of coal and rock under different lithology combinations. After a comprehensive analysis of petroleum geology, it demonstrates that hydrocarbon-bearing strata have short hydrocarbon migration and vertical features. After the history of coal pressure inoculation, the analysis of the tectonic movement and the relationship between overpressure distribution and space-time formation of oil and gas reservoirs, it is considered that the pressure mechanism plays a leading role in the formation of coal-bearing stratigraphic reservoirs. Existence is an important condition for the formation of oil and gas reservoirs in coal measures strata