东营凹陷胜坨地区沙二上亚段古物源输送路径研究

应用330余口井的钻、测井资料，绘制地层对比图与地层厚度图，建立了地层格架，揭示了地层发育情况，并通过砂岩厚度图与百分含量图，描绘了砂体沉积的分布范围.分析结果表明：胜坨油田沙二上亚段沉积时期存在3个主要物源和1个次要物源，3个主要物源分别是来自陈家庄凸起的西北部物源与东北部物源，以及来自青坨子凸起的东部物源；1个次要物源是来自陈家庄凸起的北部物源，在个别小层沉积时发育.各小层砂岩厚度分布情况揭示出研究区内部物源分配过程，即西北部物源区的碎屑物质向东南方向搬运并控制一区的沉积物质展布；东北部物源区的碎屑向西南方向搬运；东部物源区的碎屑向西搬运，来自东北部与东部的物源两者交汇并控制二、三区的沉积物质展布.物源在不同砂组或小层中其位置在一定区域内不断迁移，碎屑物质在盆地内搬运方向也随之发生变化，造成不同时期（小层）来自物源区的沉积物相互叠置.物源也同时受同沉积断层的影响，同沉积断层的走向控制了地层展布与碎屑物质在研究区内的搬运方向.

STUDY ON THE TRANSPORT PATH OF PALEO-PROVENANCE IN THE SECOND MEMBER OF SHAHEJIE FORMATION IN SHENGTUO AREA,DONGYING DEPRESSION

According to the stratigraphic correlation and thickness maps by drilling and logging data from over 330 wells, the paper establishes stratigraphic framework to reveal its development, and shows the distribution of sandbody deposits with sandstone thickness and percentage content. The results show that during the sedimentary period of Upper Es₂ in Shengtuo Oilfield, there are three major provenances and one secondary provenance. The distribution of sandstone thickness in each sublayer reveals the distribution of internal provenances. The provenance in different sand formations or sublayers constantly migrate within a certain area, and the transportation directions of detrital materials in the basin also change correspondingly, which leads to the superimposition of sediments from provenances of different periods and sublayers. The synsedimentary faults also affect the provenance, and the strike controls the stratigraphic distribution and transport direction of detrital materials in the study area.