针对具有Bingham流体特性的稠油油藏具有启动压力梯度的特点,基于椭圆流理论给出具有启动压力梯度的稠油油藏水平井极限泄油半径的计算方法。利用该方法可以确定水平井的极限泄油半径,为具有Bingham流体流变性的稠油油藏开发部署水平井提供参考。%In heavy oil reservoir where fluid flow through porous medium with a threshold pressure gradient,the fluid is similar to Bingham fluid.This paper presents a simple method for determination of horizontal well critical drainage radius based on the elliptic flow theory.Limit drainage radius can be calculated by this formula.It can be used as a reference for arranging development well pattern in heavy oil reservoirs with Bingham fluid flow.
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