Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection

Dissolution trapping of CO2 in brine can mitigate the risk of supercritical CO2 leakage during long-term geological carbon sequestration (GCS). The dissolution of overlying supercritical CO2 into brine increases the density of brine in its upper portion, which causes gravity-driven convection (GDC)...

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Detalles Bibliográficos
Autores: Wang, Yufei, Fernández García, Daniel|||0000-0002-4667-3003, Saaltink, Maarten Willem|||0000-0003-0553-4573
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/456063
Acceso en línea:https://hdl.handle.net/2117/456063
https://dx.doi.org/10.5194/hess-29-2485-2025
Access Level:acceso abierto
Palabra clave:Geological carbon sequestration
Anisotropy
CO2 dissolution
Numerical simulations
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
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spelling Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convectionWang, YufeiFernández García, Daniel|||0000-0002-4667-3003Saaltink, Maarten Willem|||0000-0003-0553-4573Geological carbon sequestrationAnisotropyCO2 dissolutionNumerical simulationsÀrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterràniaDissolution trapping of CO2 in brine can mitigate the risk of supercritical CO2 leakage during long-term geological carbon sequestration (GCS). The dissolution of overlying supercritical CO2 into brine increases the density of brine in its upper portion, which causes gravity-driven convection (GDC) and thus significantly increases the rate of CO2 dissolution. To date, most studies on GDC-enhanced dissolution are based on homogeneous media, and only few studies exist on the effect of heterogeneity on GDC-enhanced dissolution. Here, we study the effect of heterogeneity and anisotropy on GDC-enhanced dissolution rate using numerical simulations with randomly obtained permeability fields. Dissolution rates calculated by these simulations are related to properties of the permeability field using least-squares regression. We obtained two empirical formulas for predicting the asymptotic GDC-enhanced dissolution rate. In the first formula the dissolution rate is almost linearly proportional to the dimensionless equivalent vertical permeability. In the second one the dissolution rate is linearly proportional to a dimensionless vertical finger-tip velocity. This indicates that the GDC-enhanced dissolution can be predicted using either the equivalent vertical permeability or the vertical finger-tip velocity. Furthermore, both formulas demonstrate that higher-permeability anisotropy results in lower dissolution rates, suggesting that pronounced horizontal stratification can inhibit the dissolution of CO2.This research has been supported by the European Commission, EU Horizon 2020 Framework Programme(grant no. H2020-MSCA-ITN-2018); the Ministerio de Economía y Competitividad (grant no. RTI 2018-101990-B-100, MINECO/FEDER); and the Catalan Agency for Management of University and Research Grants, FI 2017 (grant no. EMC/2199/2017).Peer ReviewedEuropean Geosciences Union (EGU)20252025-06-1620262026-02-23journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/456063https://dx.doi.org/10.5194/hess-29-2485-2025reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 813120 INtegrating Magnetic Resonance SPectroscopy and Multimodal Imaging for Research and Education in MEDicineopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4560632026-05-27T15:37:01Z
dc.title.none.fl_str_mv Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection
title Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection
spellingShingle Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection
Wang, Yufei
Geological carbon sequestration
Anisotropy
CO2 dissolution
Numerical simulations
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
title_short Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection
title_full Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection
title_fullStr Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection
title_full_unstemmed Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection
title_sort Numerical analysis of the effect of heterogeneity on CO2 dissolution enhanced by gravity-driven convection
dc.creator.none.fl_str_mv Wang, Yufei
Fernández García, Daniel|||0000-0002-4667-3003
Saaltink, Maarten Willem|||0000-0003-0553-4573
author Wang, Yufei
author_facet Wang, Yufei
Fernández García, Daniel|||0000-0002-4667-3003
Saaltink, Maarten Willem|||0000-0003-0553-4573
author_role author
author2 Fernández García, Daniel|||0000-0002-4667-3003
Saaltink, Maarten Willem|||0000-0003-0553-4573
author2_role author
author
dc.subject.none.fl_str_mv Geological carbon sequestration
Anisotropy
CO2 dissolution
Numerical simulations
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
topic Geological carbon sequestration
Anisotropy
CO2 dissolution
Numerical simulations
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
description Dissolution trapping of CO2 in brine can mitigate the risk of supercritical CO2 leakage during long-term geological carbon sequestration (GCS). The dissolution of overlying supercritical CO2 into brine increases the density of brine in its upper portion, which causes gravity-driven convection (GDC) and thus significantly increases the rate of CO2 dissolution. To date, most studies on GDC-enhanced dissolution are based on homogeneous media, and only few studies exist on the effect of heterogeneity on GDC-enhanced dissolution. Here, we study the effect of heterogeneity and anisotropy on GDC-enhanced dissolution rate using numerical simulations with randomly obtained permeability fields. Dissolution rates calculated by these simulations are related to properties of the permeability field using least-squares regression. We obtained two empirical formulas for predicting the asymptotic GDC-enhanced dissolution rate. In the first formula the dissolution rate is almost linearly proportional to the dimensionless equivalent vertical permeability. In the second one the dissolution rate is linearly proportional to a dimensionless vertical finger-tip velocity. This indicates that the GDC-enhanced dissolution can be predicted using either the equivalent vertical permeability or the vertical finger-tip velocity. Furthermore, both formulas demonstrate that higher-permeability anisotropy results in lower dissolution rates, suggesting that pronounced horizontal stratification can inhibit the dissolution of CO2.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-06-16
2026
2026-02-23
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/456063
https://dx.doi.org/10.5194/hess-29-2485-2025
url https://hdl.handle.net/2117/456063
https://dx.doi.org/10.5194/hess-29-2485-2025
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 813120 INtegrating Magnetic Resonance SPectroscopy and Multimodal Imaging for Research and Education in MEDicine
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv European Geosciences Union (EGU)
publisher.none.fl_str_mv European Geosciences Union (EGU)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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