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通过组分模型模拟实际凝析气藏恒容衰竭过程，研究在低界面张力作用下近井区域凝析油的流动性。储集层平均渗透率和孔隙度分别为０．０５２７μｍ２ 和０ ．１０７３，凝析气流体富含凝析油，最大反凝析液量约为２２％ 。尽管模拟油气的界面张力常常比实际凝析油气高数十倍，但预测凝析气藏动态时仍常常采用从模拟油气测得的相对渗透率。由于低界面张力会明显影响油气相对渗透率，因此，对模拟油气相对渗透率进行了校正。校正后油气相对渗透率增大，特别是凝析油的相对渗透率明显增加。通过近井区域凝析油饱和度、日产油量、累积产油量随生产时间的变化分析了凝析油的动态特征。结果表明，在生产初期，近井地带凝析油迅速积聚，很快达到最大饱和度，并随井继续生产而逐渐减小。分析相对渗透率校正前、后的结果发现，由于凝析油气界面张力低改善了凝析油流动性，所以校正后近井区域凝析油饱和度大大低于校正前，且校正后日产油量、累积产油量均高于校正前。研究结果同时表明，正确的相对渗透率曲线对于描述凝析油气生产动态具有重要意义。
The constitutive model was used to simulate the steady-state failure process of condensate gas reservoirs, and the fluidity of condensate oil in the near-well region under low interfacial tension was studied. The average reservoir permeability and porosity are 0.0527μm2 and 0, respectively. 1073, condensate gas condensate-rich fluid, the maximum amount of condensate was about 22%. Although the interfacial tensions of simulated hydrocarbons are often ten times higher than those of actual condensates, the relative permeability measured from simulated hydrocarbons is often used to predict the behavior of condensate reservoirs. Since low interfacial tension significantly affects the relative permeability of oil and gas, the relative permeability of the simulated oil and gas is corrected. After correction, the relative permeability of oil and gas increased, especially the relative permeability of condensate oil increased significantly. The dynamic characteristics of condensate oil were analyzed by the change of production time by condensate oil saturation, daily oil production and cumulative oil production in the near well area. The results show that during the initial production period, the condensate in the near wellbore accumulates quickly and reaches the maximum saturation soon, which gradually decreases with the continued production of the well. The results of the analysis of relative permeability before and after correction show that the condensate oil saturation in the near well region after correction is much lower than that before correction due to the low interfacial tension between condensate and oil gas and improves the fluidity of condensate. , The cumulative oil production is higher than before correction. The results also show that the correct relative permeability curve is of great significance for the description of the condensate production.