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通过对鄂尔多斯盆地内大量的岩心观察和录井、测井资料的查阅,对井资料进行了大量单井微相划分,确定了鄂尔多斯盆地上三叠统延长组长10油层组主要以浅湖和三角洲沉积为主;确定了较为详实的剥蚀线、湖岸线及深湖线,作出了沉积相平面图,表现了盆地内研究层位的沉积相在平面上呈环带展布的特征。由于砂体的发育情况完全受控于沉积相的展布特征,因此沉积相的确定可为寻找有利区指明方向。
Through a large number of core observation and logging and well logging data access in the Ordos Basin, a great deal of single well microfacies are divided into well data. It is confirmed that the Upper Triassic Yanchang Formation in the Ordos Basin is mainly composed of shallow lakes and deltas Sedimentary dominated. Determine a more detailed erosion line, lakeshore line and deep lake line, made a sedimentary facies plan, showing that the sedimentary facies of the study strata in the basin showed a zonal distribution in the plane. Because the development of the sand body is completely controlled by the distribution characteristics of the sedimentary facies, the determination of sedimentary facies may be to find favorable areas to indicate the direction.