Impact of heterogeneity on CO2-brine displacement: hybrid analytical-numerical modelling accounting for velocity dependent relative permeability

Subsurface storage of CO2 introduces a series of new technical challenges that require the development of new mathematical models. One such challenge is that the balance of viscous, capillary and gravitational forces results in velocity-dependent mixing and thus relative permeabilities. The substantial variation between near-wellbore and far-field velocities necessitates including these velocity-dependent relative permeability functions to accurately predict reservoir and well behaviour. Analyti