惠民凹陷西部油气成藏期分析

利用主力烃源岩生排烃期法、储层流体包裹体均一温度法、油藏饱和压力法和圈闭发育史法,对惠民凹陷西部地区油气成藏期进行了综合分析。研究认为,该区油气成藏期大致可分为两个时期,即早第三纪东营组沉积末期和晚第三纪馆陶组—明化镇组沉积时期,其中第二期为主要成藏期。不同层系油气藏的形成时间存在差异。

Analysis of hydrocarbon reservoir forming stages in the west of Huimin sag

According to the methods of generation and expulsion stages of major hydrocarbon source rocks, the homoge-nization temperature of fluid inclusion, bubble point pressure of reservoirs and the formation age of traps, the hydrocarbon reservoir forming stages in the west of Huimin sag are analyzed comprehensively. The research shows that the hydrocarbon reservoir forming stages in this area are roughly divided into two; one is late Dongying sedimentary stage in Palaeogene and the other is late Guantao-Minghuazhen sedimentary stage in Neogene, and the latter is the main reservoir forming stage. The forming time of hydrocarbon reservoirs in different series of strata is different.