气井产能预测方法的研究与进展

气井产能预测是气田开发中一项非常重要的工作和任务。目前,气井产能预测的方法有多种,但稳定渗流理论依然是气井产能预测重要的理论基础。首次以稳定渗流理论为基础,对各种气井产能预测的新理论、新方法进行了较全面地论述、评价和讨论。特别是对二次三项式、三次三项式的适应性进行了深入的研究。实例表明,应用二次三项式,既可确定气井的绝对无阻流量,又可以获得气井临界产量这个重要参数,用该参数确定气井的工作制度更合理。对高压高产气井应用三次三项式确定气井的绝对无阻流量是可行的。在此基础上,文中分别对考虑启动压力梯度和滑脱效应及同时考虑启动压力梯度和滑脱效应的气井产能公式、变形介质气藏气井和水平气井产能公式等新的理论公式进行了扼要论述、分析和讨论。

Research and progress in gas well productivity prediction

Prediction of gas well productivity is very important in gas field development.There are a variety of prediction methods,but the theory of steady seepage still is the basis of gas well productivity prediction.A variety of new theories and methods are comprehensively assessed and discussed,especially the adaptability of quadratic trinomial and cubic trinomial.Case application indicates that quadratic trinomial can determine the absolute open flow and critical production of gas wells,which are used to determi...