陕北杏子川油田化子坪区长6低渗储层特征

Characteristics of Chang 6 Low-permeability Reservoir in Huaziping Area of Xingzichuan Oilfield,Northern Shaanxi

通过岩心常规和铸体薄片、X光衍射、阴极发光、压汞和扫描电镜等岩心资料分析方法,对杏子川油田化子坪开发区长6储层特征及影响因素进行深入研究,结果表明:研究区储层岩性主要是细粒长石砂岩,以原生粒间孔为主、胶结类型以孔隙胶结为主,沉积相是三角洲前缘亚相沉积,成岩作用主要是压实作用、胶结作用和溶蚀作用。结合储层物性研究将储层分为3类,为油田开发和产能建设提供参考。

The characteristics of xingzichuan oilfield Huaziping Chang6reservoir in Huaziping development area of Xingzichuan Oilfield and their influencing factors were studied by analyzing the conventional core data and the data of casting slices,X ray diffraction and cathodoluminescence,mercury injection and scanning electron microscope.The results show that the reservoir lithology is mainly fine feldspar sandstone,primary intergranular pore is its main pore type,pore cementation is its main cementation type,its sedimentary facies is delta front facies,its diagenesis mainly includes compaction,cementation and dissolution.Combined with reservoir physical property research,the reservoir is divided into three types,which provides reference for oilfield development and productivity construction.