On relative permeability data uncertainty and CO2 injectivity estimation for brine aquifers

► Injectivity sensitivity analysis incorporating 25 experimentally obtained relative permeability parameter sets from the literature. ► For open aquifers, injectivity uncertainty associated with relative permeability is found to be as high as ±57%. ► For closed aquifers, injectivity uncertainty associated with relative permeability is found to be as low as ±6%.