关键词: 多组分模型, 凝析油气藏, 状态方程, 数值模拟方法, 模拟计算, 相平衡计算, 黑油模型, 模拟成本, 华北油田, 平衡常数

Abstract: A new K-value compositional model for a retrograde condensate reservoir ispresented in this paper. The major physical phenomena and mathematical model used in the simulator are described.An application of both this K-value model and the compositional model based on the EOS to the example in SPE 4271 and a comdensate reservoir in our country are shown resulting in very good consistency. The new model which obtains K-values in a more effective way can cut down the time and the cost in the phase equilibrium calculation and simulation.