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在凝析气藏开发过程中，凝析油在地层中析出将导致气相渗透率和产能降低，研究凝析气井流入动态必须综合考虑析出的凝析油对油气相渗透率的影响。文章在Sarfraz等人研究的基础上，提出了将凝析油气两相拟压力积分分解为两个积分函数之积，一个积分函数与流体高压物性有关，另一个积分函数与有效渗透率有关。利用实际凝析气井不稳定压力恢复试井数据确定拟有效渗透率函数，从而解决了凝析气井产能方程中的真实有效渗透率问题，进而求出两相拟压力，然后利用产能试井数据求出凝析气井流入动态方程。这取代了过去用岩心实验确定的油气两相相对渗透率曲线确定产能方程的方法。

METHOD TO DETERMINE INFLOW PERFORMANCE OF CONDENSATE GAS WELLS 1)

During the production process of condensate gas reservoirs, condensate oil dropping out in the reservoirs will cause the permeability and productivity of gas phase decreasing. The influence of dropped out condensate oil on the oil/gas phase permeability must be considered comprehensively when the inflow performance of condensate gas wells is studied. Based on the study of Sarfraz, et al., it is suggested that pseudo-pressure integral of condensate oil/gas bi-phases is divided into the product of 2 integral functions. One integral function is related to the physical property of the fluid under high pressure. Another integral function is related to the effective permeability. The transient testing data from real condensate gas wells are used to determine the effective pseudo-permeability function so that the real effective permeability can be derived for the productivity equation of condensate gas wells, and the bi-phases pseudo-pressure can be obtained. Then with the productivity testing data, the inflow performance equation of condensate gas wells can be derived. The method takes the place of the method to determine the productivity equation by the relative permeability cures of oil/gas bi-phases derived by core experiments.