南梁油田白211井区延10段沉积相及砂体展布

Sedimentary facies and sand body distribution of Yan10 member in Bai 211 well block of Nanliang Oilfield

以南梁油田白211井区延10段为研究对象,充分利用钻井、岩心、测井等资料,开展地层细分、沉积相类型、砂体展布特征分析。结果表明,延10段地层可细分为延10_(1)、延10_(2)、延10_(3)、延10_(4)共4个小层;主要发育辫状河道、心滩及河漫滩等沉积微相;延10段砂体延伸方向近似南北向,油层组整体河道砂体较发育,厚度大,延伸远,连片性好。

Taking Yan10 member of Bai-211 well block in Nanliang Oilfield as a research object,the stratigraphic subdivision,sedimentary facies type and sand body distribution characteristics are analyzed by making full use of drilling,core,logging and other data.The results show that the Yan10 member can be subdivided into four sub-layers:Yan10_(1),Yan10_(2),Yan10_(3)and Yan10_(4).It mainly develops sedimentary microfacies such as braided channel,channel bar and flood plain.The extension direction of the sand body in Yan10 member is approximately north-south.The overall channel sand body of the oil formation is relatively developed,with big thickness,long extension and good continuity.