【摘要】 东濮凹陷西洼南段早第三纪构造沉积演化史与该区的油气资源含量密切相关。综合研究表明 ,该区的盆地沉降不但与两侧的长垣断层和黄河断层的活动有关 ,还与盆地的基底活动有关。断层活动与盆地活动的阶段性或幕式性导致盆地沉降量在时间上的不均匀性。同时 ,根据断层与基底活动之间的相互关系 ,可将盆地的沉降方式划分为 3种类型 :断坳式、断陷式和坳陷式。这 3种沉降方式所形成的地层型式、沉积体系及其组合模式也不同 ,断陷沉降期的地层型式为楔形及板状 ,是主要的生油地层 ;断坳及坳陷期的地层型式则主要为单面凸镜体状 ,可形成良好的储集岩层更多还原

【Abstract】 The evolution history of structure sedimentation of southern part of west sag of Dongpu depression is closely related with oil and gas resource in the area during Paleogene A comprehensive study shows that the basin subsidence is not only related with the action of Changyuan and Huanghe faults on both sides of the depression, but also with the action of the basin basement The action episodes of faults and basin cause difference of the subsidence magnitude in every stage.According to the relation of action of the faults and the basin basement, the basin subsidence is divided into three types, such as faulting depression,rift faulting and depression The stratum shape, sedimentary system and combined pattern corresponding with the basin subsidence types are different The stratum patterns during rift faulting period are sphenoid and tabular, which are the major oil source beds The stratum shapes during faulting depression and depression periods are of one side convex shape, which forms good reservoirs更多还原