考虑测试期间地层压力变化的气井产能数据处理新方法

在对某气田产能测试数据分析时发现，由二项式方程拟合的无阻流量比试采确定的无阻流量低，并出现部分气井生产能力接近或超过先前拟合的无阻流量。研究表明，测试期间地层平均压力的下降是导致该气田无阻流量计算偏低的主要原因。本文提出考虑每一测试点地层压力变化的气井产能数据处理方法，该方法计算结果与实际试采结果接近。

A New Method for Processing Gas Well Testing Data with the Change of Formation Pressure

The absolute open flow predicting from testing is the basis of gas well producing.When treating well testing data,we found that the absolute open flow from the Two Coefficient Equation was smaller than that from producing and that the practical productivity of some wells was nearly equal to or greater than the absolute open flow.Shown from research,the main reason for smaller absolute open flow is the decrease of average formation pressure during well testing.A new method for processing gas well testing data was studied with considering the change of formation pressure.The results from case study show the new method is practical.