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准噶尔盆地中部坳陷区面积约3．5×104 km2,中新生代处于沉降的低凹部位,构造微弱,断裂不发育。侏罗-白垩系分布广、厚度大,主要为三角洲-浅湖相沉积体系;具有多时代烃源岩,油气资源丰富;多时代储盖组合;多含油层,油水关系复杂;多种圈闭类型,但以岩性圈闭为主。断裂-不整合及砂体连通为主要运移网络,油气成因类型有: 原生型、调整残留型、调整再聚型及晚期聚集型。
The central Junggar Basin depression area of about 3.5 × 104 km2, the Mesozoic and Cenozoic in the low part of the settlement, weak structure, fault rupture. The Jurassic-Cretaceous is widely distributed and mainly of delta-shallow lacustrine sedimentary system. It has multi-age source rocks, abundant oil and gas resources, multi-age reservoir-cap assemblages, complex oil-water reservoirs, complex traps Type, but dominated by lithologic traps. Fault-unconformity and sandbody connectivity are the main migration networks. The genetic types of oil and gas include primary type, residual type adjustment, reaggregation adjustment and late accumulation type.