在原有状态方程型多组分模型的基础上,作者于1988年与华北油田王瑞河同志研讨提出了一种新的凝析油气藏K值多组分模型模拟方法。文中阐述了问题的提出,物理及数学模式;该模型与状态方程型多组分模型一起,先后对SPE 4271一例及我国某凝析油气藏进行了对比模拟计算,得到十分相近的结果。由于该方法能快速地获取K值,从而大大降低了数模中相平衡的计算量和模拟成本,不失为一种有效的新方法。 Based on the original state equation multi-component model, the author discussed with Comrade Wang Ruihe of North China Oilfield in 1988 a new K-value multi-component model simulation method for condensate reservoirs. In this paper, the problem formulation, physics and mathematic model are expounded. Along with the state equation multi-component model, the model has been compared with an example of SPE 4271 and a condensate reservoir in China, and the results are very similar. Since this method can quickly obtain the K value, which can greatly reduce the computational complexity and the simulation cost of phase balance in the numerical model, it is an effective new method.