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分析了吐哈盆地煤系地层油气聚集特征，指出油气藏在平面上主要沿湖盆岸线．剖面上主要在生油门限上下分布；构造运动对煤系排烃有着重要作用，导致主排烃期和油气主成藏期与挤压构造运动对应；断层是油气运移的主要通道，易生高丰度油气藏，而砂层也可侧向输导油气，但距离短，所形成油气藏规模小；煤沼环境生储油气易产生构造－岩性复合型油气藏。应围绕主力生油区的主力生储油段，加强对“四条线三个面一门限”的勘探。

OIL-GAS ACCUMULATION FEATURES OF COAL MEASURE STRATA IN TUHA BASIN AND EXPLORATORY COUNTERMEASURES

??The analysis of oil-gas accumulation features of coal measure strata in Tuha Basin shows that oil-gas pools formed in the Basin are horizontally captured along lake strandline,and vertically controlled above and below the oil generation threshold. Tectonic movements play an important role in hydrocarbon migration and auumulation. The study shows that the time of hydrocarbon generation is coincide with the tectonic movements to lead to the occurance of peak periods of hydrocarbon migration and formation of oil-gas pools. Fault is the main pass way of oil-gas migration,which in many cases form the accumulation with high hydrocarbon abundance,Sand body can also transport hydrocarbon laterally,which is characterized by short distance of migration to usually form oil pools with small scale. The enviroment of coal measure deposition is very easily to prodme structure-lithological type oil-gas pools. Based on the features of hydrocarbon generation and accumulation as mentioned above,a exploratory guiding idea focures on "the four lines.three interfaces and one threshold" is proposed as to find more composite oil-gas pools.