Sedimentary system features of Fuyang oil layer in the north of Zhaozhou oilfield

On the basis of core observation,with the regional geological background,drilling ,well logging data and so on,the comprehensive analysis shows that:the deposition of Fuyang oil layer in the north of Zhaozhou oilfield belongs to shallow lacustrine delta system,include shallow lacustrine delta facies and lacustrine facies. Its favorable sandbody types are subaqueous distributary channel sandbodies,underwater crevasse spray sandbodies,overbank sand,sheet sandbodies of delta front and beach bar sandbodies. By the study of sandbody characteristics and summarizing sedimentary mode of the members three and four of the Quantou formation,It provides research material for reservoir evaluation of Fuyang reservoir.