THE SIMULATION OF THE INSITU COMBUSTION PROCESS IN ONE DIMENSION USING A HIGHLY IMPLICIT FINITE-DIFFERENCE SCHEME

This paper describes a model for numerically simulating in-situ combustion, and the technique used for solving the resulting system of nonlinear finite-difference equations. The numerical model developed accounts for the flow of oil, water and gas phases, as well as the formation of a solid coke phase. The oil phase contains two volatile components. The gas phase is comprised of two hydrocarbons gases, steam, oxygen and a non-condensable gas. The simulator generates results which are consistent with experimental findings. The results of this simulator and combustion tube experiments have been compared in detail.