孔喉比对地层渗透率的影响  

Effect of pore-throat ratio on reservoir permeability

作　　者：李传亮[1] 

机构地区：[1]西南石油大学"油气藏地质及开发工程"国家重点实验室,四川成都610500

出　　处：《油气地质与采收率》2007年第5期78-79,87,共3页Petroleum Geology and Recovery Efficiency

基　　金：国家自然科学基金项目"高含硫裂缝性气藏流体相变与气液固耦合综合模型研究"(50474039);四川省应用基础研究项目"双重有效应力在油藏工程中的应用基础研究"(04JY029-114)联合资助

摘　　要：孔隙渗透率是单根孔隙的渗透率,地层渗透率是孔隙渗透率折算到整个地层截面积之上的渗透率。孔隙渗透率通常很大,但地层渗透率却不大。地层渗透率是岩石孔隙特性的综合反映。孔隙半径、孔隙密度和孔喉比对地层渗透率均产生影响。孔喉比对渗透率的影响很大,喉道大小是制约渗透率的重要因素。Pore permeability is the permeability of a single pore of a rock, while reservoir permeability is the equivalent value of pore permeability on the whole cross-section of the rock. Pore permeability is usually very high, but the reservoir permeability is not very high. The reservoir permeability is a comprehensive function of rock pore properties. Pore radius, pore density and pore -throat ratio influence reservoir permeability to different extents. However the pore-throat ratio plays an important role in reservoir permeability. The size of pore throats determines the reservoir permeability primarily.

关 键 词：油藏 岩石 渗透率 孔隙 孔喉比 

分 类 号：TE311[石油与天然气工程—油气田开发工程]