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准噶尔盆地二叠系由海陆过渡相、泻湖相和河流相沉积组成，烃源岩发育，具有生、储、盖、圈、保的良好配置条件。中、晚石炭世和二叠纪，准噶尔古陆块受西伯利亚板块、哈萨克斯坦板块、塔里木板块的碰撞，形成了西缘、南缘、东北缘三大前陆盆地系统。由于三个不同地区前陆盆地系统的发育，构成了以二叠系风城组、下乌尔禾组为主要烃源岩的三大盆地级含油气系统。根据对形成盆地内含油气系统的充要条件──静态要素和动态要素的分析，确定出了以三个盆地级含油气系统为单元的七个盆地内含油气系统。各含油气系统都有着各自的形成和分布规律。按其空间展布，又可划为同期并列式、同期交叉式、异期叠合式、异期重合式四种形式。这些形式的有效组合，构成了准噶尔盆地内有利的油气聚集带。
The Permian in the Junggar Basin is composed of marine-continental transitional facies, lacustrine facies and fluvial facies sedimentary deposits. The source rocks are well developed, and are well equipped with raw, reservoir, cap, ring and flood protection conditions. The middle and late Carboniferous, Permian and Junggar ancient terrains formed three systems of the western foreland basin, the southern margin, and the northeastern margin by the collision of the Siberian plate, the Kazakhstan plate and the Tarim plate. Due to the development of the foreland basin system in three different regions, the three major basin-level petroleum systems with the Permian Fengcheng Formation and the Lower Wuerhe Formation as the main source rocks are formed. Based on the analysis of the static and dynamic elements of the necessary and sufficient conditions for the formation of the petroleum system in the basin, the seven systems within the basin containing three petroleum systems are identified. Each oil and gas system has its own formation and distribution. According to their spatial distribution, but also can be classified as concurrent side-by-side, over the same period of cross-over, different overlap, different coincidence four forms. The effective combination of these forms constitutes a favorable hydrocarbon accumulation zone in the Junggar Basin.