I112 LBManalysis on effect of the structure of porous medium on capillary trapping

Abstract

Carbon dioxide injected into the aquifer would be trapped by capillarity in porous rocks. We simulated two-fluid-phase flow in porous media by means of a Lattice-Boltzmann Method to examine the influence properties of porous media gave on gas trapping. Simulation results show three trapping mechanisms and the saturation agree with the experimental results. Residual gas saturation tends to increase with the reducing pore throat radius of porous media but does not affected by the coordination number.