论文部分内容阅读
根据铸体薄片、扫描电镜、物性、空隙结构、岩心和测井分析和化验资料,对华池油田华152井区长3砂岩储层研究的结果表明,华152区长3储层为三角洲前缘水下分流河道和河口坝沉积的复合体,其岩性为灰色、灰绿色、灰褐色岩屑质长石细纱岩、长石质岩屑细纱岩。岩石表现为成分成熟度比较低,结构成熟度中等的特点。砂岩的粒度以细粒、粉-细粒为主;磨圆度以次棱角状为主;分选性较好;接触关系以点-线状为主;胶结类型以孔隙-薄膜型、孔隙-再生型为主。砂岩储层溶孔、粒间孔、晶间孔、微孔和微裂隙五种类型比较发育;孔隙以粒间孔为主,溶孔次之,少量晶间孔、微孔和微裂隙[1]。
According to the results of casting thin slice, scanning electron microscope, physical property, void structure, core and well logging analysis and laboratory data, the study on Chang 3 sandstone reservoir of Hua 152 well in Huachi Oilfield shows that the reservoir of Chang 3 in Hua 152 area is the front of the delta Marginal underwater distributary channel and estuarine dam deposition complex, the lithology of gray, gray-green, taupe feldspar feldspar thin veil, feldspathite fine yarn. Rock performance for the composition of relatively low maturity, the characteristics of medium maturity. The grain size of the sandstone is mainly fine-grained and fine-grained; the degree of roundness is sub-angular; the sorting is better; the contact is dominated by point-line; the type of cementation is pore- Reproductive type based. There are five types of sandstone reservoirs, such as dissolved pores, intergranular pores, intergranular pores, micropores and micro-fissures. The pores are dominated by intergranular pores, followed by a small number of intergranular pores, micropores and micro-fissures [1 ].