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气水同产井是有水气藏开发中后期所出现的一种普遍现象，此时地层的渗流特征不同于单相气体渗流特征，必然导致气水同产井的压力动态特征不同于纯气井，即气水同产井的流入动态不同于纯气井，而气不同产井的流入动态是动态分析及井筒举升的基础，关于气水同产井流入动态的研究，国内还未见相关的文献报道，文章的研究作了有益的浓度，文章基于质量守恒原理，建立了气水两相地层瞬态渗流的数学模型，通过定义气水两相拟压力函数，将渗流数学模型线性化，在获得数学模型解后，考虑地层损害和非达西效应的影响，推导出在地层中为水气两相渗流的气水同产井的二项式产能方程，从而建立了气水同产井瞬态流水动态关系曲线的理论，由此，可以作出气水同产井的流入动态关系曲线，为气水同产井的动态分析提供了理论基础。

A DISCUSSION ON THETRANSIENT INFLOW PERFORMANCE RELATIONSHIP CURVE OF GAS-WATER WELL

Gas water well is commonly found in the middle late stage of water carrying gas reservoir development.At this time,the flow characteristics of gas and water in formation are different from those of single phase gas,thus inevitably causing that the characteristics of pressure performance (or inflow performance) of gas water well are distinct from those of net gas well.The inflow performance of gas water well is the fundament of performance analysis and wellbore lifting.The research on inflow performance of gas water well in this paper is a good try and relevant report hasn't been found in domestic and foreign literatures.On the basis of the principle of mass conservation,a mathematical model of gas water two phase transient flow in formation was set up and it was linearized through defining gas water two phase pseudo pressure function.After achieving the solution of the mathematical model,a binomial productivity equation of gas water well with two phase flow in formation was derived in consideration of the influence of formation damage and non Darcy effect,thus establishing the theory of transient inflow performance relationship curve of gas water well.Based on this,the transient inflow performance relationship curve of gas water well may be drawn up and a theoretical fundament is provided for the performance analysis of gas water well.