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塔里木库车前陆盆地叠置于中生代陆内坳陷沉积层序之上，这一特征决定了库车中生界油气系统中有效烃源岩的展布及油气的生成、运移、聚集和分布规律。库车前陆盆地在中生代发育两套三类有效烃源岩，与此对应，形成了三类原油：湖相泥岩生成的油、煤系泥岩生成的油和煤岩生成的油。据此可以识别出三个含油气系统：Ｔ２－３ｋ＋Ｔ３ｈ湖相泥岩含油气系统、Ｔ３ｔ＋Ｊ１＋２煤系泥岩含油气系统以及Ｔ３ｔ＋Ｊ１＋２煤岩含油气系统。这三个含油气系统在油源、圈闭、运移类型和保存条件等方面不尽相同，各具特色，形成了丰富多彩的油藏、气藏、凝析油气藏、油苗、油砂及井下油气显示。
The Tarim Kuqa foreland basin is superimposed on the sedimentary sequence of the Mesozoic intracontinental depression. This characteristic determines the distribution of the effective hydrocarbon source rocks in the Mesozoic oil and gas system and the formation, migration and accumulation of hydrocarbons in the Kuqa Basin Distribution. In Kuqa foreland basin, two sets of three types of effective source rocks were developed in the Mesozoic. Correspondingly, three types of crude oil were formed: oil produced from lacustrine mudstone, oil from coal-derived mudstone and oil from coal rock. Based on this, three oil and gas systems can be identified: T2-3k + T3h lacustrine mudstone petroleum system, T3t + J1 + 2 coal-bearing mudstone petroleum system and T3t + J1 + 2 coal-bearing petroleum system. The three petroleum systems are different in oil source, traps, migration types and preservation conditions, and have their own unique features, forming a rich and colorful reservoir, gas reservoir, condensate reservoir, oil sap, oil sands And underground oil and gas show.