Finite element solution for a coal-bed methane reservoir model

We present a mathematical model for fluid flow in porous media in the case of coal bed methane reservoirs. The model consists of a two-phase immiscible fluid flow with gas and water and takes into account desorption. We discretize the problem by a finite element method with adding a streamline diffusion term for the case of small capillary pressure. Time integration uses the fully implicit Euler scheme. Numerical experiments in radial and fully 2-D cases show the effectiveness of the model and numerical method.