Abstract: A three-phase one-dimensional fully compositional miscible flood model is presented inthis paper.Phase behavior andcomponents distribution between phases during miscible pro-cess is emphatically considered in the model.The oil-gas relative permeability curves at lowsurface tension situations is modified,The"front" and "rear" characteristics of multi-contactmiscibilitv are pointed out and the recovery indexes of different driving methods are estimat-ed.

Key words: miscible drive, camposition, model, numerical simulation, phase, equililbrium, application

摘要： 重点考虑了混相过程中的相变、相间组份分配,对低界面张力情况下的油气渗曲线进行了修正,建立了一个一维三相全组份混相驱模型.应用研究中指出了多次接触混相的“前缘”和“后缘”特征,得到了不同驱替方式的采收率指标.模型的计算结果与实验数据吻合,所确定的混相参数已得到了应用.

关键词: 混相驱, 组份, 模型, 数值模拟, 相平衡, 应用