Transient pressure analysis in porous and fractured fractal reservoirs  

作　　者：KONG XiangYan LI DaoLun LU DeTang 

机构地区：[1]Department of Mechanics&Mechanical Engineering,University of Science and Technology of China,Hefei 230027,China

出　　处：《Science China(Technological Sciences)》2009年第9期2700-2708,共9页中国科学（技术科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 10672159, 10702069);National Basic Research Program of China ("973") (Grant No. 2006CB705805)

摘　　要：Fluid flow in porous and fractured fractal reservoirs is studied in the paper. The basic formulae of seepage velocity,permeability and porosity in both porous and fractured fractal media are developed. The pressure diffusion equation of slightly compressible fluid in fractal reservoirs is derived. The analytical solutions of the transient pressure are given for the line-source well and the well with well-bore storage and skin factor. The typical curves of pressure and the derivative of pressure are established,along with the interpretation of the well-testing method via type-curve matching. In addition,3-D pressure diffusion equations for anisotropic fractal media are given in both Cartesian coordinates and Cy-lindrical coordinates.Fluid flow in porous and fractured fractal reservoirs is studied in the paper. The basic formulae of seepage velocity, permeability and porosity in both porous and fractured fractal media are developed. The pressure diffusion equation of slightly compressible fluid in fractal reservoirs is derived. The analytical solutions of the transient pressure are given for the line-source well and the well with well-bore storage and skin factor. The typical curves of pressure and the derivative of pressure are established, along with the interpretation of the well-testing method via type-curve matching. In addition, 3-D pressure diffusion equations for anisotropic fractal media are given in both Cartesian coordinates and Cylindrical coordinates.

关 键 词：fluid flow POROUS MEDIA FRACTAL MEDIA PERMEABILITY POROSITY type-curves for FRACTAL RESERVOIRS anisotropic MEDIA 

分 类 号：TV135[水利工程—水力学及河流动力学]