Abstract: Numerical simulation for a condensate reservoir is a very complex problem. This paper gives an attempt to solve this kind of problems by an easier wayby means of the Black Oil Model.This paper gives the formulation of the problem, physical modeling mathematical modeling, the approach to get the solution and a derivation of the finite difference equations far differential Cases.There titre also actual examples presented at the end of the paper. The examples have shown the recovery of the condensate under differentiquantity of dry gas injected again. According to an analysis of the results, the paper has reached a conclusion that seventy percent dry gas recycling will be optimam for the Su₁ reservoir.

摘要： 凝析气藏的模拟计算是个十分复杂的工作。以较为简单的方式——黑油模型思想——考虑凝析气藏模拟问题,是本文的尝试。文中叙述了问题的提法、物理模式、数学模式及求解途径等。并且,详述了不同情况下左分方程的推导过程。文中附有计算实例。实例给出了不同千气回注情况下的凝析油采出情况。分析了计算结果,得出“苏1潜山最佳回注比为0.7"的结论。