气井二项式产能方程求解方法的改进与应用

Improvement and application of computation for binomial gas deliverability equation

针对气田在开发早期没有进行产能试井的实际情况下,无法用传统的压力降法计算产能方程,而提出了一种利用稳定生产数据和井控储量便可求取气井产能方程系数的新方法。在此基础上,对只知道稳定生产数据情况下的求解过程进行了分析,并在计算过程中引入最优化算法中的一维搜索法,大大提高了计算的速度和精度。该方法在某气田进行了实际应用,并和实际资料以及传统试凑法的计算结果进行了比较,表明该方法的计算结果较为可靠。

According to the actual condition during the development of gas field without well test, a kind of new method is introduced, which can compute coefficients of deliverability equation for gas wells, based on the data of stable production and well-controlled reserves. The analysis of the steps of the solution by optimized one-dimensional search method is made to provide better accuracy and speed up computation. The method can be applied into practice in gas field. Compared with practical data and traditional computation method, the method is proved to be comparatively credible.