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斋桑盆地位于“一带一路”重要的沿线国—哈萨克斯坦国东北部,二叠系成藏研究相对较少.基于斋桑盆地构造演化背景,通过与邻区准噶尔盆地西北缘在构造沉积演化、烃源岩、储盖组合以及运聚模式的对比,揭示其二叠系勘探潜力.结果表明:斋桑盆地和准噶尔盆地均为板块碰撞的产物,沉积体系受断裂控制;与风城组烃源岩类型相似,麦恰特组烃源岩有机质类型以Ⅰ和Ⅱ型为主,源岩发育于高盐度、强还原性水体环境,为一套好-很好的烃源岩;但斋桑盆地二叠系储层中孔低渗,物性相对较好,且二叠系内部发育大套地层圈闭,可形成规模地层油气藏.综合对比分析表明斋桑盆地二叠系具有良好的勘探潜力.
Based on the tectonic evolution of the Zaisang basin and the northwestern margin of the Junggar Basin in the vicinity, the Zaisan Basin is located in the northeastern part of the country along the “Belt and Road” - the northeastern part of Kazakhstan. Evolution, source rock, reservoir-cap assemblage and migration-accumulation model, the exploration potential of Permian is revealed.The results show that both the Zaisang Basin and the Junggar Basin are the products of plate collision and the sedimentary system is controlled by faults; The source rocks are similar in type. The organic types of the source rocks of the Mai-Chate Formation are mainly type I and type II, and the source rocks are well-sourced rocks with high salinity and strong reduction. The Middle Permian reservoirs in the Zaisang Basin are characterized by low permeability and relatively good physical properties, and large sets of stratigraphic traps developed within the Permian to form large-scale stratigraphic reservoirs. Comprehensive comparative analysis shows that the Permian in the Zaisang Basin has good Exploration potential.