A numerical scheme is presented for the solution of coupled multiphase hydromechanical
problems in deformable porous media. Model verification is conducted against
analytical solutions for multiphase flow with capillarity and coupled multiphase hydromechanical
consolidation. A hybrid monolithic(flow)-staggered(mechanical) numerical
solution scheme is verified to be stable for real materials, provided proper error control is
placed on the hydraulic to mechanical iteration and the time-stepping scheme. Initial results of
CO2 injection into an aquifer-caprock system do not show significant differences in CO2
migration rate between flow-only and hydro-mechanical simulations for conservative
injection scenarios. However, the results highlight important regions in the reservoir with
regard to potential mechanical failure and caprock integrity and suggest the need for further
analysis.