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通过对凝析气井产能分析方法以及流体相态、组分变化、渗流特征的研究，结合状态方程理论及相平衡闪蒸计算方法，引入反映地层中凝析油气体系变化的两相拟压力函数，提出了考虑近井带反凝析液饱和度分布以及动态污染影响的凝析气井产能分析新方法。通过实例计算认为该产能计算方法能较好地反映近井带地层凝析油析出时造成的动态表皮伤害对产能的影响；当地层压力高于露点压力时，预测方法所得的流入动态曲线在井底压力为露点压力处有一拐点，这与实际情况符合，反映了凝析液析出对气井产能的影响。
Based on the analysis of production capacity of condensate gas well, the study of fluid phase, composition and seepage characteristics, combined with the state equation theory and the phase equilibrium method, a two-phase pseudo-pressure function is introduced to reflect the variation of condensate hydrocarbon system in the formation. A new method of condensate gas well productivity analysis considering the distribution of near-well fluid condensate saturation and the influence of dynamic pollution is proposed. The case calculation shows that the productivity calculation method can better reflect the effect of dynamic skin damage on productivity caused by condensate oil formation in the near-well zone. When the formation pressure is higher than the dew point pressure, the inflow dynamic curve obtained by the prediction method is well- The bottom pressure is an inflection point at the dew point pressure, which is consistent with the actual situation, reflecting the influence of condensate precipitation on gas well productivity.