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针对形成不同流体区域的气藏、有边水气藏、岩性尖灭气藏及井底存在污染或改善的气藏等情况， 建立了考虑井筒相态重分布的复杂气藏的渗流新模型， 求出了３ 种典型外边界条件下的气藏拟压力分布解析解， 并绘出了井底压降曲线。给出的气藏无量纲压力表达式及压降曲线， 还可适用于凝析气井及井筒带积液的气井。结合实例分析给出了本文理论在油田开发中的应用。
Aiming at the formation of gas reservoirs with different fluid zones, marginal water gas reservoirs, lithologic sharp gas reservoir, and gas reservoirs with pollution or improved gas in the bottom of the well, a new seepage model of complex gas reservoirs considering the phase and mass redistribution of wellbore The analytical solutions of the pseudo-pressure distribution of gas reservoirs under three typical outer boundary conditions are obtained and the pressure drop curve at the bottom of the well is plotted. Given the non-dimensional pressure expression and pressure drop curve of gas reservoir, it can also be applied to condensate gas well and wellbore with gas wells. Combined with the case analysis, this paper gives the application of the theory in oilfield development.