Geological and Petrophysical Properties of Underground Gas Storage Facilities in Ukraine and Their Potential for Hydrogen and CO 2 Storage

Yuliia Demchuk (), Kazbulat Shogenov (), Alla Shogenova, Barbara Merson and Ceri Jayne Vincent
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Yuliia Demchuk: NGO “Geothermal Ukraine”, 76000 Ivano-Frankivsk, Ukraine
Kazbulat Shogenov: SHOGenergy Consulting, 11414 Tallinn, Estonia
Alla Shogenova: SHOGenergy Consulting, 11414 Tallinn, Estonia
Barbara Merson: National Institute of Oceanography and Applied Geophysics—OGS, 34010 Sgonico, TS, Italy
Ceri Jayne Vincent: British Geological Survey, Keyworth, Nottingham NG12 5GG, UK

Sustainability, 2025, vol. 17, issue 6, 1-25

Abstract: This article provides detailed geological and reservoir data on the existing underground gas storage (UGS) facilities in Ukraine and their prospects for hydrogen (H 2 ) and carbon dioxide (CO 2 ) storage. The H 2 and CO 2 storage issue is an integral part of the decarbonisation of Ukraine and Europe as a whole. A detailed assessment of UGS in Ukraine was carried out in the framework of the EU Horizon 2020 project Hystories, which is about the possibility of the geological storage of H 2 . A database of the available geological data on reservoir and caprock properties was compiled and standardised (reservoir geometry, petrophysics, tectonics, and reservoir fluids). General environmental criteria were defined in terms of geology and surface context. The total estimated H 2 energy storage capacity in 13 studied UGS facilities is about 89.8 TWh, with 459.6 and 228.2 Mt of H 2 using the total (cushion and working gas) and working gas volumes, respectively. The estimated optimistic and conservative CO 2 storage capacities in the 13 studied UGS facilities are about 37.6/18.8 Gt, respectively. The largest and deepest UGS facilities are favourable for H 2 and CO 2 storage, while shallower UGS facilities are suitable only for H 2 storage. Studies could be conducted to determine if CO 2 and H 2 storage could be applied in synergy with CO 2 being used as a cushion gas for H 2 storage. The underground storage of H 2 and CO 2 plays key roles in reducing greenhouse gas emissions and supporting clean energy while enhancing energy security. Increasing the share of renewable energy and integrating sustainable development across various sectors of the economy is crucial for achieving climate goals.

Keywords: underground gas storage; hydrogen storage; CO 2 geological storage; cushion gas; reservoir rocks; sustainable decarbonisation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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