梁家楼油田油气成藏要素及成藏模式研究

油源对比证实,东营凹陷梁家楼油田油气来源于利津洼陷和牛庄洼陷的沙三段烃源岩;主要的储集层发育在沙三段,其次为沙二、四段砂体;盖层为沙三段局域性盖层和沙一段区域性盖层;油气主要成藏期发生在明化镇沉积时期,此后未发生较大的构造运动,油气藏保存条件较好;研究区存在自源侧向运移成藏和它源垂向运移成藏两种模式.

The Study on Elements and Models of Reservoirs Generation in Liangjialou Oilfield

Hydrocarbon of Liangjialou oilfield in Dongying depression is from source rock of Es 3 in Lijing sag and Niuzhuang sag.Main reservoirs of it happen in Es 3,the second are in Es 2 and Es 4.The partable caprock is occurred in Es 3,but regional caprock is dispersed in Es 1.The timeing of hydrocarbon reservoirs is in the sedimentary period of Minghuazhen Formation,and larger structural movements have not been occurred since the sedimentary period of Minghuazhen Formation,so conditions of resevoirs preservation are relatively better.Two models of hydrocarbon reservoir generation exist in Liangjialou oilfield,one is that hydrocarbon reservoirs and its source rock are in same stratrum,and hydrocarbon migration direction is lateral,another is that they are in different stratrum,and hydrocarbon migration direction is vertical.