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《Journal of Shenzhen University Science and Engineering》 2013-06
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The productivity formulas of horizontal wells intercepted by multiple fractures with arbitrary angles in gas reservoirs

Zhang Deliang;Zhang Ruihan;Zhang Liehui;Chen Jun;Yang Xuefeng;Zhang Xiaotao;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University;Research Institute of Petroleum Exploration and Development,PetroChina Southwest Oil and Gas Field Company;  
This paper presents a new mathematical model for studying the steady-state productivity of horizontal wells in low permeable gas reservoirs. Based on the complex potential theory,a plane potential distribution model of a single fracture was established. Following the superposition principle and the coordinate transformation method,the productivity model of a fractured horizontal well in low permeability gas reservoirs was established,which takes into account multiple fractures at any angle to the wellbore. The productivity dynamics of horizontal wells were then obtained with Visual Basic 6. 0,and the reliability of this model was confirmed through a field case. Result shows that compared with fracture conductivity,the angles between fractures and wellbore,the length of the horizontal wellbore,and the half-length of fractures have primary influences on the production of fractured horizontal wells in low permeability gas reservoirs.
【Fund】: 国家杰出青年科学基金资助项目(51125019);; 国家自然科学基金资助项目(51374181)~~
【CateGory Index】: TE328
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