摘要
利用铸体薄片、压汞、扫描电镜、粘土矿物等分析资料,研究了安塞地区长6储层的孔隙结构特征,研究表明长6储层以浅灰色细粒长石砂岩为主,溶蚀粒间孔、原生粒间孔和溶蚀粒内孔是工区内最主要的孔隙类型,三者共同构成孔隙-溶孔-微孔的孔隙结构;长6毛管压力曲线特征总体表现为中等排驱压力,略细歪度,孔喉分选性较差,连通性差的特点。
According to experimental data of casting thin sections,parameter of capillary pressure,SEM,clay mineral,we studied the microscopic pore structure characteristics of Chang 6 reservoir in A Sai area,Ordos. The results showed that the main type rock of Chang 6 reservoir is a light grey color,fine grainedarkose. The main types of pore are intergranular dissolved pore,residual intergranular pore and intragranular dissolved pore. The characteristics of capillary pressure curvesshowed the oil expulsion pressure are medium,pore and throat are sorted lowly,and the connectivity between pore and throat are poor.
出处
《内蒙古石油化工》
CAS
2017年第4期120-122,共3页
Inner Mongolia Petrochemical Industry
