Expanding Hydrogen Storage to Porous Rock Formations in an Illinois Basin Aquifer
Under an award from the Department of Transportation Pipeline and Hazardous Materials Safety Administration (PHMSA), GTI Energy is developing a framework that accelerates industry expansion of underground hydrogen storage beyond salt caverns to other formation types such as porous rock. The research team is estimating feasibility and providing a defensible set of operational considerations for selecting suitable porous rock formations as potential storage sites.
Project results aim to inform a set of guidelines to help gas utilities, storage facilities, and regulatory agencies assess potential H2 movement and loss which is based on the formation type, caprock sealing and containment, geochemical reactions, and multiphase H2 flow with formation fluids. It will also define the operational considerations needed to address geomechanical reservoir impacts from repeated injection-reproduction cycles on stress fields. This framework accelerates UHS site screening characterizations and operational considerations for most U.S. porous rock UHS reservoirs.
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