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Communication dans un congrès

Natural Mitigation of CO2 Leakage Accumulations

Abstract : Carbon dioxide geological storage in deep saline aquifer is considered as a promising solution to ensure the necessary decrease of CO2 anthropogenic emissions. Its industrial development is above all conditioned by its safety demonstration. Several modes of trapping take part in the confinement of the injected CO2 within saline aquifers: structural and residual trapping (as a gas phase), solubility trapping (dissolved in the aqueous phase) and mineral trapping. Despite these trapping modes occurring in the storage aquifer, potential gas leakage into an overlying aquifer is a risk scenario that should be considered. As for every risk scenario, safety barriers should be set-up in the aim of preventing, controlling or limiting the consequences of the considered risk event. This study aims at investigating the role played by the overlying aquifer formation as a safety barrier in case of CO2 accumulation by focusing on its "buffering capacity", which we define as the natural capacity of the overlying aquifer containing mobile gas (secondary accumulation) to prevent any additional leakage and further upward migration.
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Communication dans un congrès
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Contributeur : Jean-Charles Manceau Connectez-vous pour contacter le contributeur
Soumis le : mardi 2 octobre 2012 - 07:00:39
Dernière modification le : lundi 11 octobre 2021 - 13:02:02
Archivage à long terme le : : jeudi 3 janvier 2013 - 02:45:08


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  • HAL Id : hal-00713778, version 1



Jean-Charles Manceau, Jeremy Rohmer. Natural Mitigation of CO2 Leakage Accumulations. 11th International Conference on Greenhouse Gas Control Technologies (GHGT11), Nov 2012, Kyoto, Japan. pp.4400-4408. ⟨hal-00713778⟩



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