Numerical Simulation of Hor zontal Fracture Gas well Productivity w ith Permeability Depending on Pressure
单位
(西北分公司工程技术研究院)
Organization
Engineer ing Technology Institute, Southw est Company, SINOPEC, W ulumuqi 830011, China
摘要
油气藏开发过程中地层有效应力的改变, 会导致渗透率的变化, 进而影响井的产
量。为了更准确地预测低渗、特低渗气藏中压裂水平缝气井的产量, 建立了一套考虑渗透率随
应力变化及裂缝导流能力随时间和位置变化等因素影响的二维径向渗流数学模型, 编制相应
的数值模拟程序, 对影响气井产量的水平裂缝导流能力、裂缝半径、有效应力等进行了计算分
析。
Abstract
Dur ing the process o f the reservo ir dev elopment, the change o f the stress w ill resu lt in the change of fo rma tion perm eab ility, and we ll perform ance is influenced. To m ore accura tely forecast fractur ing gas-w ell produc tiv ity w ith hor izonta l fracture in the low perm eab ility and the ex tra- low perm eab ility gas reservo irs, the two-d im ensiona l rad ia l m athem atica lm ode l is se t up w ith pe rm eab ility depend ing on effective stress and frac ture conductiv ity chang ing w ith tim e and position. And the effects of fracture conductiv ity, fracture rad ius on post-frac production w ere stud ied.
关键词：
謀裂;水平裂缝; 气井产能; 数学模型; 数值模拟;
Keywords:
Fractur ing, H o rizon tal fracture, Gas-w ell productiv ity, M a them atical mode,l Num e rica l sim ulation;
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