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《Mechanics in Engineering》 2011-01
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ANALYSIS OF TWO-PHASE PERCOLATION OF FRACTURED HORIZONTAL WELLS IN LOW PERMEABILITY OIL RESERVOIRS

YAO Tongyu~(*,2)) Wang Ming~+ ZHU Weiyao~+ LI Jishan~(**) *(School of Petroleum Engineering in China University of Petroleum,Shandong Dongying 257061,China) +(Civil and Environmental Engineering School,University of Science Technology Beijing,Beijing 100083,China) **(Geological Scientific Research Institute of Shengli Oilfield Company Ltd.,Shandong Dongying 257015,China)  
According to flow characteristics of different flow areas of fractured horizontal wells in low permeability oil reservoirs,the vadose region of fractured horizontal wells can be divided into three districts,the non-Darcy flow district with a high speed controlled by cracks,the ellipse flow district and the matrix non-Darcy flow district.Two-phase porous flow mathematical models of matrix non-Darcy flow with start-up pressure gradient are built.The results indicate that the production goes with the increase of fracture conductivity;the incremental scope of production decreases with the increase of production time;initial production of fractured horizontal decreases progressively with the increase of fracture length,the incremental scope of production decreases with the increase of fracture length;the production of fractured horizontal wells is the maximum in the situation with a long median crack and a short two-way crack.
【Fund】: 中石油股份公司项目资助(020132-1-2)
【CateGory Index】: TE357
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