指出用传统的二项式产能方程来处理高压低渗气井的产能测试资料往往存在着不同程度的误差,有些井的误差较大。论述了高压低渗气藏固体表面边界层的形成机理和边界层效应对天然气非线性渗流的影响,由此得出了天然气在高压低渗边界层的流动不同于孔道中心流动的结论。在此基础上,建立了高压低渗气井非线性稳定渗流方程(高压低渗气井产能方程),并建立非线性规划模型求解方程未知系数,用交汇图解法求出其绝对无阻流量。通过实例计算证明了该方法的正确性、可靠性和实用性。

In the natural high-pressure and low-permeability gas reservoir, we find many low producing gas wells′ off-take potential testing material don??t obey traditional binomial expression equation, namely,use binomial equation handling this kind of low producing gas wells?? off-take potential testing material has varying degrees error, some of it may be big. The establishment and application of high-pressure and low-permeability gas well nonlinear stabilization flow equation is this article we study.