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肇州油田北部扶杨油层沉积属浅水湖泊-三角洲体系,发育有浅水湖泊三角洲相和湖泊相。通过精细岩心观察和单井相分析,识别出水下分流河道、水下天然堤、水下决口扇、水下分流间湾、河口坝、前缘薄层席状砂,滨湖泥滩、混合滩、砂滩,浅湖砂坝、浅湖泥等沉积微相类型。其中,河口坝相对不发育是该区沉积体系最为显著的特征。在对以上各种沉积微相特征进行精细研究基础上,通过详细的储层物性特征研究,根据录井油气显示、地层测试、试油资料及开发动态资料分析,确定了水下分流河道砂、水下决口扇砂体、前缘席状砂和滨浅湖滩坝砂等主要储集砂体类型,为扶杨油层的储层评价与预测提供了有力依据。
The Fuyang oil layer in the northern part of Zhaozhou Oilfield is a shallow lacustrine delta system with the development of shallow lacustrine facies and lacustrine facies. Through fine core observation and single-well facies analysis, it is found that underwater distributary channel, underwater natural dike, underwater rupture fan, underwater diversion bay, estuary dam, thin bed-shaped sand of front edge, mudflat beach and mixed beach , Sand beach, shallow lake sand dam, shallow lake mud sedimentary microfacies type. Among them, the relatively undeveloped mouth dam is the most prominent feature of sedimentary system in this area. Based on the detailed study on the characteristics of various sedimentary microfacies above, based on the detailed reservoir physical characteristics study, based on the analysis of logging oil and gas, formation test, oil test data and development dynamic data, The main types of sand bodies such as submarine fan sector, foreground sands and bank sand are the basis for the reservoir evaluation and prediction of Fuyang oil layer.