Numerical simulation of flow of multicomponent mixtures in porous media (Q1077296)

This paper presents a numerical method which is distinguished from the well-known ones by the following characteristics. The flow equations are approximated by a completely conservative finite-difference scheme of the implicit pressure - explicit saturation type, the calculation being carried out using Newton's method of iteration with respect to both the pressure and the composition of the mixture. The minimum derivative principle is used in the approximation of the divergence terms of the equations. The phase equilibrium is calculated using the equation of state.