摘要
通过铸体薄片、扫描电镜、高压压汞、恒速压汞技术对鄂尔多斯盆地马岭地区延10储层微观孔隙结构特征进行了深入研究。结果表明:马岭地区延10储层主要为细-中粒长石岩屑砂岩。微观孔隙结构类型复杂多样是造成储层物性差的主要原因。孔隙吼道类型、孔喉半径、粘土矿物发育等因素共同影响储层的微观孔隙特征。其中,粒间孔发育,粘土矿物影响程度小,喉道半径大,孔喉比小,孔喉连通性好,结构渗流系数大是优势储层的微观孔隙结构参数。
Based on investigation of cast slices,scanning electron microscopy,high pressure mercury injection and constant speed mercury injection,the microscopic pore structure char- acteristics of Yan 10 reservoir in Maling area are studied.The result shows that reservoir sandstone is mainly composed of fine-medium feldspar lithic sandstone.A variety of micro- scopic pore structure types are the main reasons for poor reservoir property.Pore throat type, pore throat radius and the growing degree of clay mineral all affect the microscopic pore structure characteristics of the reservoir.Microscopic pore structure parameters of the advan- tage reservoir are the development of intergranular pores, small degree of clay mineral influ- ence,big throat radius,small pore-throat ratio, better pore throat connectivity and larger seep- age coefficient of structure.
出处
《石油化工应用》
CAS
2015年第9期89-93,共5页
Petrochemical Industry Application
基金
国家科技重大专项大型油气田及煤层气开发
项目编号:2011ZX05044
陕西省科技统筹创新工程计划项目
项目编号:2015KTCL01-09
关键词
高压压汞
恒速压汞
结构渗流系数
延10储层
马岭地区
high pressure mercury injection
constant speed mercury injection
seepage coef-ficient of structure
Yan 10 reservoir
Maling area
