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通过钻井岩心观察、薄片鉴定及实测孔渗资料分析,分别研究了观音场—大塔场地区须六段储层岩性、物性表明:须六段储层(发育在须六1亚段和须六3亚段)主要为长石岩屑砂岩、岩屑长石砂岩和岩屑砂岩,为低孔、低渗的孔隙型、孔隙-裂缝型储层。残余粒间孔、颗粒边缘和粒间胶结物溶孔较发育。环边绿泥石胶结和构造破裂作用为建设性成岩作用,改善了储集空间、提高了储集性。
By drilling core observation, sheet identification and measured pore permeability data, the lithology and reservoir properties of Xu 6 reservoir in Guanyinchang-Datatao area are studied respectively. The physical properties show that the reservoir of Xu 6 reservoir 3) are mainly feldspathic lithic sandstones, lithic feldspathic sandstones and lithic sandstones. They are low porosity and low permeability pore type and pore-fracture type reservoirs. Residual intergranular pores, grain boundaries and intergranular cement dissolved pores more developed. The chlorination and tectonic rupture of the rim are constructive diagenesis, which improves the reservoir space and improves the reservoir property.