Hydrogen Cycling in the Depleted Yardarino Gas Reservoir, Perth Basin, Western Australia

Abstract

This study evaluates the feasibility of underground hydrogen storage in the depleted Yardarino gas field, Western Australia, to enhance renewable energy integration after 2030. Using numerical reservoir modelling, we analysed hydrogen purity during cycling, accounting for viscous, gravitational, and molecular diffusion effects. Results show that hydrogen purity increased from 50% up to 95% after 3 cycles, with vertical wells preferred over horizontal wells. Yardarino emerges as a promising pilot site supporting decarbonisation efforts.