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针对东营凹陷沙四上亚段滨浅湖滩坝砂体沉积特征,根据层序地层学理论,在综合分析地震、测井、岩心等资料的基础上,采用地震层序、声波时差和测井曲线叠合等方法进行层序界面识别,建立了东营凹陷沙四上亚段层序地层格架,将沙四上亚段划分为一个三级层序,并根据层序内低位体系域、湖侵体系域及高位体系域发育情况,细分为7个准层序组。
According to the sequence stratigraphy theory, based on the comprehensive analysis of seismic, logging and core data, the seismic sequence, acoustic time difference and logging Curve superimposition and other methods to identify sequence boundaries, established the sequence stratigraphic framework of the Upper Es4 Member in the Dongying Sag, and divided the Upper Es4 in the Shahejie Formation into a third-order sequence. According to the lowstand system tract in the sequence, Intrusion system tract and high system tract development, subdivided into seven quasi-sequence group.