凝析气藏具有复杂的相态,其流动形态取决于近井地带的凝析油带。深入了解凝析油的聚集对产能的影响以及对液相组分的构成,对优化生产策略、降低凝析带影响以及提高最终采收率都是十分重要的。控制凝析油气藏产能的关键因素是相对渗透率,它直接影响凝析油聚集。聚集的凝析油带不仅降低气液相对渗透率,同时也改变油藏流体的相态组分,进而重塑油藏流体相图和改变流体特性。不同的生产策略可能影响流动相、静相的组分组态以及油藏圈闭的流体总量,从而进一步影响井的产能,最终影响油藏的气液采收率。改变油井生产策略可以影响液体析出组分,并因此改变减产程度。本文通过在油田范围内实施多相凝析气藏流体的组分模拟来研究凝析油饱和度的变化及其组分,并把不同的生产策略相互比较。提出使气体采收率最大化的最优生产程序。设计了两组分凝析油岩心驱替实验来模拟压力从露点压力以上下降到以下过程中凝析油产量的变化。 Condensate gas reservoirs have complex phases and their flow patterns depend on the condensate zone near the wellbore. It is important to gain a deep understanding of the effect of condensate accumulation on capacity and composition of liquid components, to optimize production strategies, reduce the effects of condensate zones, and increase ultimate recovery. The key factor controlling condensate reservoir productivity is relative permeability, which directly affects condensate accumulation. The condensed condensate zone not only reduces the relative permeability of gas and liquid, but also changes the phase composition of the reservoir fluid, thereby reshaping the reservoir fluid phase diagram and changing fluid properties. Different production strategies may affect the composition of the mobile phase, the phase composition of the stationary phase, and the amount of fluid trapped in the reservoir, thereby further affecting well productivity and ultimately affecting the gas-liquid recovery of the reservoir. Changing the production strategy of a well can affect the composition of the liquid being precipitated and hence the extent of the reduction in production. In this paper, the composition and variation of condensate oil saturation were studied through the component simulation of multi-phase condensate gas reservoir in the oilfield and the different production strategies were compared with each other. The optimal production process for maximizing gas recovery is proposed. A two-component condensate core flooding experiment was designed to simulate the pressure change from above dew point pressure to the following condensate production.