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《Chinese Journal of Computational Physics》 2007-04
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Computation of Non-Darcy Flow with Hybrid Grids

HUANG Feng,LU Detang (Department of Mechanics,University of Science and Technology of China,Hefei 230027)  
For low non-Darcy flow in vertically fractured wells,based on the generalized Darcy's law,a series of non-Darcy flow differential equations and definite conditions of vertical fractured wells are built up.We assume that the stratum and fluid are slightly compressible and the outer edge is circular.Hybrid grids of regular and PEBI grids are used to divide solution domains.Numerical solution of bottomhole pressure is obtained with finite difference method.The bottomhole pressure and its derivative with finite conductivity considering the skin and well-bore storage effects are analysed in detail.The numerical solution closes to the theoretical result.
【Fund】: 国家973(G1999032805);; 油气藏地质开发工程国家重点实验室(西南石油学院)开放基金(PLN0409)资助项目
【CateGory Index】: O357.3
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