关键词: 数学模型, ASP复合驱, 相对渗透率, 最优化方法

Abstract: The determination of relative permeability curves of ASP combination flooding is a very important work in studying ASP flooding mechanism and numerical simulation.It is very difficult that only relying on experimental technology to determinate ASP system relative permeability curves due to complexity of ASP combination flooding.In this paper,the influences of the transient interfacial tension and polymer concentrations are considered in relative permeability curves model.By applying percolation flow mechanics and optimization principle,the mathematical optimization model of parameter estimate of the ASP combination flooding of relative permeability is given.The target function of the optimization problem is established as the weighted mean of oil recovery and pressure difference.By using the optimization method of DFP,the parameter estimate value of the relative permeability curves are obtained.The calculation results show that the mathematical model of ASP combination flooding and the optimization calculation method is reliable.The sensitivity problem of the initial parameter value has been also solved.

Key words: mathematical model, ASP combination flooding, relative permeability, optimization method