天然气井常规回压试井的改进——不关井产能试井

Improvement of Conventional Back-pressure Testing in a Natural Gas Well-Deiiverabillty Test without Shut-in

从气井二项式产能方程出发,通过参数变换和多元线性回归方法,得出地层压力和产能方程系数的求解公式。用此公式,只要有不同产量对应的流压数据,就可以得出气井的产能方程,而无需关井测取地层压力。实例说明应用该方法可得到满意的结果。

Based on a binomial deliverability equations, through parameter conversion and multiple linear regression, formulae are obtained for calculating formation pressure and factors in deliverability equations, by which the deliverability equations for gas well calculation can be obtained by using flowing pressure data corresponding to different production rate without shut-in for measuring the formation pressure. Examples show that the method is used with satisfied results.