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长2段油层是涧峪岔油田主力采油层位之一,本此研究通过对岩心铸体薄片、扫描电镜观察,物性数据综合分析认为:研究区长2段储层砂岩渗透率和孔隙度均较高,胶结物成分含量较高,以方解石为主。储层孔隙喉道具有分选较好和孔喉较粗特征,孔隙类型主要以粒间孔和溶孔为主,微观评价为大孔—粗喉储层,储层物性主要受控于其岩石学特征和成岩作用,储层物性较好。
The second member of Chang 2 reservoir is one of the main oil reservoirs in Jiangyucha Oilfield. According to the analysis of thin castings, SEM and physical property data of core castings, the study shows that the permeability and porosity of reservoir sandstone in Chang 2 Member of the study area Higher, high content of cement content, mainly calcite. The pore throat of the reservoir is well sorted and coarser in pore throat. The pore types are dominated by intergranular pores and dissolved pores, and are macroscopically evaluated as macropore-coarse throat reservoirs. The reservoir properties are mainly controlled by their petrological characteristics And diagenesis, reservoir properties better.