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伊宁凹陷以上二叠统铁木里克组为主要烃源岩 ,形成了P2 t-P2 t自生自储和P2 t-T2 -3 下生上储两套含油气系统。前一系统已被钻探所证实 ,为已知系统 ;后一系统为推测系统。盆地热模拟结果及与准噶尔盆地对比分析表明 :该凹陷的二叠系含油气系统在三叠纪早期进入生烃门限 ,早中侏罗世达生烃高峰 ,侏罗纪末结束生油进入生气阶段 ;油气大规模生成运移在T3 ～J1-2 时期 ;印支末幕构造运动 (距今 2 0 8Ma)为该系统的关键时刻。根据油气充注程度、运移方向及圈闭条件综合分析 ,凹陷内的南斜坡为该系统的有利勘探地区。
The upper Permian Tiemurike Formation in the Yining Depression is the main source rock, forming two sets of petroleum systems of P2 t-P2 t self-generation and P2 t-T2 -3 subsistence. The former system has been confirmed by drilling as a known system; the latter system is a speculation system. The results of basin thermal simulation and comparison with the Junggar Basin show that the Permian petroleum system of the depression entered the hydrocarbon generation threshold in the early Triassic, reached the peak in Early Jurassic, and ended in the end of Jurassic. Large-scale oil and gas migration occurred during the T3 ~ J1-2 period. The end-tectonic movement of the Indosinian (up to 280 Ma) was the key moment of the system. According to the comprehensive analysis of hydrocarbon filling degree, migration direction and trapping conditions, the southern slope in the depression is a favorable exploration area for the system.