平南大断层特征及与油气运聚的关系

断层是油气运移的重要通道，结合胜利油田平南—平方王地区的区域地质概况，分析了平南大断层的形成演化过程，恢复了其构造演化过程图。对钻穿该断层的滨古26、滨古11等井进行了岩心取样，并对断层面附近样品所合流体包裹体进行了形态学和显微测温分析。研究区地层演化史、包裹体的形态与分布及均一温度统计结果证实，断层经过了反转过程，并与油气运聚匹配良好，是油气运移的主要通道，在馆陶组沉积末期至明化镇组沉积初期和明化镇组沉积中、后期发生过两期油气运移。

The relation of Pingnan big fault and hydrocarbon migration and accumulation

Faults were important pathways of oil and gas migration. In conjunction with the regional geology in Pingnan-Pingfangwang area, this paper analyzes the evolution history of Pingnan big fault and gives the structural evolution process map. Coring samples are obtained from Well Bin'gu 26 and 11, which had penetrated the fault. Morphology and micro temperature measurement are analyzed for fluid envelope of samples near fault surface. The stratigraphic evolution history, envelope morphology and distribution, and uniform temperature statistics have proved that, the fault had experienced a reversing process and fitted well with oil and gas migration, and it was the main pathway of migration. There were two oil and gas migration stages, i.e. from late Guantao to early Minghuazhen sedimentation stage, and the medium-late Minghuazhen sedimentation stage.