文西断裂带构造特征与油气运聚关系

THE RELATIONSHIP OF STRUCTURAL CHARACTERS WITH HYDROCARBON MIGRATION AND DISTRIBUTION

文西断裂带位于东濮凹陷中央隆起带的文南油田西部,构造面积约80km2,主要断裂呈北东向展布,西部紧邻海通集生油洼陷,具有良好的油气成藏条件。对文西断裂带的主要断层特征进行了描述,对主要断裂的构造样式作了分析,对构造发育史做了恢复。指出:该区构造发育主要经历了4个阶段,即雏形形成阶段(Es4-Es下4)、强烈深陷阶段(Es3)、滑脱变形阶段(Es上3-Es2)和滑脱增强阶段(Es上2-Ed);断层的分布控制着本区的构造格局,断层对该区油气的分布具有控制作用。

Wenxi fault belts lies in the west of Wennan oilfield which lies in the central uplift of Dongpu depression. The structural area of Wenxi fault belts is about 80 km^(2). It's major faults are north-east trending. Wenxi fault belts which has a good condition of oil and gas forming, lies to the east of Haitongji generative sag. The study on structural characters is a main content. This paper describes the characters of major faults in Wenxi fault belts, analyzes the structural types of major faults in Wenxi fault belts and resumes the structural history. And in this paper it is pointed out that the structural development of Wenxi fault belts underwent four stages mainly and the planar and sectional assembly of faults in Wenxi fault belts is described. The distribution of faults controls the structural pattern of this region. On the above base, the control of faults to the distribution and migration of oil and gas is discussed.