中国西北侏罗系油气藏模式及控制因素初探

从源岩—油藏系统出发，以油气的生成、运移、聚集为线索，探讨了西北侏罗系油气藏的成藏模式与控制因素。西北侏罗系油气藏可划分为下源型、自源型和混源型三类成藏模式，并进一步从烃源岩与储集岩的关系上细分为自生自储式、自源上储式、混源自储式、混源上储式和下源自储式等５种类型。在成藏划分的基础上，从烃源岩分布、水动力区域盖层、圈闭形成时间、断层和岩性等６个方面分析了油气藏的控制因素

Modes and Controlling Factors of Jurassic Reservoirs in Northwest China

The Jurassic hydrocarbon bearing basins in Northwest China consist of fluvial lacustrine deposits.Different types of reservoir beds distribute laterally in circle forms and overlap vertically.Different basins have different reservoir formation modes.According to the relations between hydrocarbon source rock and reservoir,the formation modes of the reservoirs can be divided three types,and they can further be divided into five types from vertical relations between hydrocarbon source rock and reservoir rock.The controlling factors of these Jurassic reservoirs are analysed in six aspects of the distribution of hydrocarbon source rock,hydrodynamic force,regional overlying formations,the forming times of traps,faults and lithology.