Effect of relative permeability hysteresis on reservoir simulation of underground hydrogen storage in an offshore aquifer

Numerical simulation of the impact of different cushion gases on underground hydrogen storage in aquifers based on an experimentally-benchmarked equation-of-state

“…Despite the numerous reservoir simulation studies mentioned above, simulating multi-phase multi-component UHS reservoirs remains a challenge due to the complexities of hysteretic transport characteristics, dissolution of hydrogen in brine, and gas mixtures hydrothermodynamics. Nonhysteretic relative permeability can overestimate cumulative hydrogen production [27,28,35]. This is because gas trapping reduces the available pore space for the injected hydrogen.…”