Lattice Boltzmann relative permeability for CO2-brine system in a 2D porous medium

Co2 sequestration is a pretty new field with little relevant published data considering the relative permeability of co2-brine systems at in-situ conditions. precise determinations of relative permeability data in gas injection experiments are difficult and expensive; also, several factors affect the accuracy. in this paper, to predict co2- brine relative permeability curves, a shan-chen type multi-component multiphase lattice boltzmann model for two-phase ow for a 2d porous medium was developed. fully periodic and full-way bounce back boundary conditions were applied to the model to get infinite domain of uid with non-slip solid nodes. incorporation of an external body force was performed by the guo scheme. the inuences of pore structure and capillary number on relative permeability curves were studied in order to establish realistic conditions for investigation of co2-brine relative permeabilities. the corrected relative permeability curves for pore structure and capillary number were tangibly in agreement with experimental data.