论文部分内容阅读
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。
The characteristics of hydrocarbon accumulation in coal measures strata in Turpan-Hami Basin are analyzed. It is pointed out that the reservoir mainly runs along the shoreline of the lake in the plane. The distribution is mainly distributed above and below the oil production threshold. The tectonic movement plays an important role in hydrocarbon expulsion of coal measures, leading to the main hydrocarbon expulsion period and the main hydrocarbon accumulation period corresponding to the extrusion tectonic movement. The fault is the main channel for hydrocarbon migration. High-abundance reservoirs, while the sand layer can also laterally transport oil and gas, but the distance is short and the formed oil and gas reservoirs are small in scale; coal-marsh environment is prone to produce tectonic-lithological composite reservoirs. The main oil and gas reservoirs should be built around the main oil producing areas to enhance the exploration of “three thresholds and one threshold” of the four lines.