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安塞油田梅塔区块是以长2油层为主体的“三低”砂岩油田,属于特低渗透油田。本次研究依据实际资料情况,综合利用铸体薄片、阴极发光等资料和手段,分析了研究区长2储层的岩石学、成岩阶段、物性特征及孔隙结构特征。通过储层特征分析研究剩余油,为油藏今后的高效开发提供理论依据,提高油藏的最终采收率。
The Meta block of Ansai Oilfield is a “three low” sandstone oilfield which is mainly composed of Chang 2 reservoir and belongs to the ultra-low permeability oilfield. Based on the actual data, this study analyzed the petrology, diagenetic stages, physical properties and pore structure characteristics of Chang 2 reservoir in the study area based on the comprehensive utilization of materials and means such as cast thin films and cathodoluminescence. Through the analysis of reservoir characteristics, the remaining oil can be provided to provide a theoretical basis for the future efficient development of the reservoir and to improve the ultimate recovery of the reservoir.