Analytical Solution for One-Dimensional Four-Component Flue Gas Displacement

Flue gas injection can be used for enhcanced oil recovery. The main content of the flue gas is CO2. In order to better understand the interaction between phase behavior and multiphase flow in a porous medium for a CO₂ injection. In this paper, the solution technique for one dimensional, dispersion-free flow of four-component mixtures with mixture viscosity changing and viscosity fingering which is especially helpful in China for severe heterogeneous continental fades reservoir is established. The analytical solutions by the method of characteristics (MOC) can be found by geometric constructions. Riemann problems modeling the injection of flue gas with mobile water in core is studied. Finally the MOC solutions with and without viscous fingering are compared to simulated displacements which shows good computational accuracy.