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Hydrogen storage in depleted gas reservoirs

Friday 31 Jan 2025

Researchers in the School of Engineering and Innovation recently published a paper on H₂ storage in depleted gas reservoirs with CO₂ in a lateral orientation to reduce gas mixing. This work, which was a collaboration with the University of Edinburgh and C-Questra, uncovered benefits and trade-offs associated with range of H₂ storage conditions. Large-scale H₂ storage in depleted hydrocarbon reservoirs offers a practical way to use existing energy infrastructure to address renewable energy intermittency. Cushion gases often constitute a large initial investment, especially when expensive H₂ is used. Cheaper alternatives such as CO₂ or in-situ CH₄ can reduce costs and, in the case of CO₂, integrate within carbon capture and storage systems.

Read the paper here:

Hydrogen storage in depleted gas reservoirs with carbon dioxide as a cushion gas: Exploring a lateral gas separation strategy to reduce gas mixing

https://www.sciencedirect.com/science/article/pii/S0360319924055848