大港油田张巨河地区东营组沉积相研究

Research on Sedimentary Facies of Dongying Formatiion in Zhangjuhe Region of Dagang Oilfield

通过对大港油田张巨河地区东营组小层进行划分,结合大量的岩心观察,对目的层段的沉积相特征及沉积微相特征进行研究。在研究区划分出2种沉积相类型:三角洲相和湖泊相,其中以三角洲相发育为主;划分出水下分流河道、水下分流河道间湾、席状砂、河口坝和深湖泥5种沉积微相。

By identification of sublayers in Dongying Formation of Zhangjuhe Area,in combination with core observation,the characteristics of sedimentary facies and sedimentary microfacies are studied.Two sedimentary facies in the study area are identified,such as delta facies and lacustrine facies,where delta facies is dominantly developed.Five types of sedimentary microfacies are identified such as underwater distributary channel,underwater distributary channel between curved,mouth bar,sheet sand,deep lake mud.