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Characteristics and distribution law of hydrocarbon accumulation in Kuqa foreland basin
Author(s): 
Pages: 395-404
Year: Issue:  4
Journal: Acta Petrolei Sinica

Keyword:  accumulation conditionaccumulation processdistribution lawreservoir-forming combinationorderly accumulationKuqa foreland basin;
Abstract: 库车前陆盆地是中国目前油气勘探程度和研究程度最高的前陆盆地.在深入认识库车前陆盆地油气成藏条件和油气聚集过程的基础上,总结了库车前陆盆地的油气分布规律:①平面上,油气相态在克拉苏构造带中部以干气为主,以此为中心向南、北两侧及东、西两端渐变为凝析气、油藏;②垂向上,以第三系含盐地层和侏罗系煤系泥岩2套区域盖层划分为盐上、盐下和深层3套成藏组合,盐下白垩系成藏组合是天然气勘探主体;③从南向北,不同构造带的油气藏类型、油气相态、油气成藏期次表现为时空上的有序聚集;④从东向西,不同构造段构造特征、油气藏类型、成藏特征和资源潜力具有差异性,具有中段油气富集的特征.通过对油气成藏规律和油气分布特征的认识,整体建立了库车前陆盆地从非常规致密油气到常规油气的有序聚集模式,深入认识了油气分布规律和有利勘探领域.
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