【摘要】 通过对钻井和地震等资料的综合分析，在开鲁盆地陆东凹陷上侏罗统中可识别出７个钻井中期基准面旋回以及与之对应的７个地震层序。７个中期旋回可合并成两个长期旋回ＬＳＣ１和ＬＳＣ２，并分别与盆地的稳定沉降阶段和强烈断陷阶段相对应。运用旋回对比原理，可建立起高分辨率地层对比格架。经研究，基准面旋回与生储盖组合的关系十分密切。基准面上升到下降的转换位置发育的大套泥岩段是区内的主要烃源层和良好的区域盖层。基准面旋回上升和下降阶段形成的各类砂体是区内主要的储集体。生储盖组合在纵向上的配置与基准面旋回的关系也十分密切，基准面上升阶段易形成上生下储和自生自储组合；基准面下降阶段易形成下生上储组合。基准面上升阶段形成的储盖组合更有利于油气聚集。更多还原

【Abstract】 Abstract Seven intermediate term stratigraphic base level circles and the corresponding seven stratigraphic sequences could be distingushed in Upper Jurassic in Ludong Sag,Kailu Basin.The intermediate term stratigraphic circles could be divided into two long term circles correesponding to the basin’s subsiding and fault depressing stages.The high resolution stratigraphic correlation framework of the sag could be established based on the principle of the stratigraphic circle correlation.It is suggested that the base level circles bear close relation to source reservior cap rock assemblage.The huge thick mudstone section deposited at the turning position from uprising to subsiding of the base level is the main hydrocarbon source rock and favourable reginal cap rock.The sandbodies formed during the uprising and subsiding periods are the main reservoir bodies.What’s more,the assemblages formed during uprising period are usually of the type with source rock in the up part and reservoirs below,or self generation and self reservoiring type;that formed during subsiding period usually belong to the type of source rock below reservoirs.It is proposed that the first kind of assemblages are more favourable.更多还原