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通过对丰深1井取心段的岩心、岩石薄片和岩心铸体薄片的观察,并结合沉积相及储层物性资料分析,认为丰深1地区沙四段储层总体上为一套砂砾岩体,岩性以含砾砂岩为主,成分成熟度和结构成熟度均较低,但储层孔隙度较高,渗透性较低,属于中高孔中低渗性储层。影响该区沙四段储层物性的因素主要是沉积相带和成岩作用,其中压实作用是导致原生孔隙度减小的主要原因,颗粒及胶结物的溶蚀是产生次生孔隙的主要因素。
Based on the observation of cores, rock slices and core castings in the coring section of the Fengshen-1 well and the analysis of sedimentary facies and reservoir physical properties, it is concluded that the Shahejie Formation reservoir in the Fengshen-1 area is a set of glutenite The body and lithology mainly consist of gravelly sandstone, with low maturity and structural maturity. However, the reservoirs have high porosity and low permeability, which belong to middle-high porosity and low permeability reservoirs. The factors affecting the reservoir physical property of Shahejie Formation are mainly sedimentary facies belt and diagenesis. The compaction is the main reason leading to the reduction of primary porosity. The dissolution of particles and cements is the main factor of producing secondary porosity.