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为进一步研究鄂尔多斯盆地盐池地区长6储层特征,文中利用大量岩心样品进行分析,通过铸体薄片、扫描电镜和压汞曲线观察,并结合孔隙度、渗透率分析测定等,对盐池地区长6储层的岩石学特征、物性特征、成岩作用和敏感性特征等方面进行研究,为有利储层的预测和评价提供依据。研究结果表明,盐池地区长6储层岩石以细粒长石砂岩为主;胶结类型以孔隙型和加大-孔隙型为主;分选较好;孔隙类型以粒间孔、长石溶孔为主,属低孔隙度,特低渗-超低渗透率储层。
In order to further study the characteristics of Chang 6 reservoir in Yanchi area, Ordos Basin, a large number of core samples were used for the analysis. Through the observation of cast thin slice, SEM and mercury intrusion curve, combined with porosity and permeability analysis, Reservoir petrological characteristics, physical properties, diagenesis and sensitivity characteristics of the study, to provide a basis for the prediction and evaluation of favorable reservoirs. The results show that the Chang 6 reservoir rocks in Yanchi area are dominated by fine-grained feldspathic sandstones; the types of cementation are mainly pore type and augment-pore type; the classification is better; the types of pores are intergranular pores and feldspar dissolved pores Mainly low porosity, ultra-low permeability - ultra-low permeability reservoir.