CAJ | 학술논문

通过铸体薄片、压汞、扫描电镜等多项测试方法,对鄂尔多斯盆地子北油田毛家河区长6储层的岩石学特征、孔隙结构、成岩作用、储集类型进行了分析与研究.结果表明:研究区长6储层岩性主要为细粒长石砂岩,储集空间以残余粒间孔及各类溶蚀孔为主,孔隙结构以中孔微细喉型、小孔微细喉型为主.研究区长6储层物性受沉积微相、孔隙结构、成岩作用的共同影响,不同沉积微相储层的物性差异较大,孔隙结构的各项参数与渗透率间具一定的相关性,机械压实与胶结作用是主要的破坏性成岩作用,溶解作用是主要的建设性成岩作用.
통과주체박편、압홍、소묘전경등다항측시방법,대악이다사분지자북유전모가하구장6저층적암석학특정、공극결구、성암작용、저집류형진행료분석여연구.결과표명:연구구장6저층암성주요위세립장석사암,저집공간이잔여립간공급각류용식공위주,공극결구이중공미세후형、소공미세후형위주.연구구장6저층물성수침적미상、공극결구、성암작용적공동영향,불동침적미상저층적물성차이교대,공극결구적각항삼수여삼투솔간구일정적상관성,궤계압실여효결작용시주요적파배성성암작용,용해작용시주요적건설성성암작용.
@@@@The petrologic characteristics and pore types in Chang 6 reservoir of the Zibei Oilfield in Ordos Basin were studied with varied methods, including casting sections, mercury injection experiment, SEM and experimental method. The results showed that the lithology is of mainly fine lithic sandstone, the dominating pore type of Chang 6 reservoirs is residual inter granular pore and dissolved pore, and midpore-microhetero is the main pore configuration. The main factors contributing to the physical properties are deposition properties, and accumulation properties are various in the different sedimentary micro-facieses, with a certain correlation between the parameters of the pore structure and permeability. Mechanical compaction and cementation are the main destructive factors and dissolution is the main constructive digenesis proving the properties by producing secondary porosities.