Multidimensional reactive transport modeling of CO2 mineral sequestration in basalts at the Hellisheidi geothermal field, Iceland.
Two and three-dimensional field scale reservoir models of CO2 mineral sequestration in basalts were developed and calibrated against a large set of field data. Resulting principal hydrological properties are lateral and vertical intrinsic permeabilities of 300 and 1700 × 10−15m2, respectively, effec...
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ftzenodo:oai:zenodo.org:12893 2024-09-15T18:14:09+00:00 Multidimensional reactive transport modeling of CO2 mineral sequestration in basalts at the Hellisheidi geothermal field, Iceland. Edda S.P. Aradóttir Eric L. Sonnenthal Grímur Björnsson Hannes Jónsson 2012-02-14 https://doi.org/10.5281/zenodo.12893 unknown Zenodo https://doi.org/ https://doi.org/10.5281/zenodo.12893 oai:zenodo.org:12893 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/article 2012 ftzenodo https://doi.org/10.5281/zenodo.12893 2024-07-26T14:49:29Z Two and three-dimensional field scale reservoir models of CO2 mineral sequestration in basalts were developed and calibrated against a large set of field data. Resulting principal hydrological properties are lateral and vertical intrinsic permeabilities of 300 and 1700 × 10−15m2, respectively, effective matrix porosity of 8.5% and a 25 m/year estimate for regional groundwater flow velocity. Reactive chemistry was coupled to calibrated models and predictive mass transport and reactive transport simulations carried out for both a 1200-tonnes pilot CO2 injection and a full-scale 400,000-tonnes CO2 injection scenario. Reactive transport simulations of the pilot injection predict 100% CO2 mineral capture within 10 years and cumulative fixation per unit surface area of 5000 tonnes/km2. Corresponding values for the full-scale scenario are 80% CO2 mineral capture after 100 years and cumulative fixation of 35,000 tonnes/km2. CO2 sequestration rate is predicted to range between 1200 and 22,000 tonnes/year in both scenarios. The predictive value of mass transport simulations was found to be considerably lower than that of reactive transport simulations. Results from three-dimensional simulations were also in significantly better agreement with field observations than equivalent two-dimensional results. Despite only being indicative, it is concluded from this study that fresh basalts may comprise ideal geological CO2 storage formations. Article in Journal/Newspaper Iceland Zenodo |
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description |
Two and three-dimensional field scale reservoir models of CO2 mineral sequestration in basalts were developed and calibrated against a large set of field data. Resulting principal hydrological properties are lateral and vertical intrinsic permeabilities of 300 and 1700 × 10−15m2, respectively, effective matrix porosity of 8.5% and a 25 m/year estimate for regional groundwater flow velocity. Reactive chemistry was coupled to calibrated models and predictive mass transport and reactive transport simulations carried out for both a 1200-tonnes pilot CO2 injection and a full-scale 400,000-tonnes CO2 injection scenario. Reactive transport simulations of the pilot injection predict 100% CO2 mineral capture within 10 years and cumulative fixation per unit surface area of 5000 tonnes/km2. Corresponding values for the full-scale scenario are 80% CO2 mineral capture after 100 years and cumulative fixation of 35,000 tonnes/km2. CO2 sequestration rate is predicted to range between 1200 and 22,000 tonnes/year in both scenarios. The predictive value of mass transport simulations was found to be considerably lower than that of reactive transport simulations. Results from three-dimensional simulations were also in significantly better agreement with field observations than equivalent two-dimensional results. Despite only being indicative, it is concluded from this study that fresh basalts may comprise ideal geological CO2 storage formations. |
format |
Article in Journal/Newspaper |
author |
Edda S.P. Aradóttir Eric L. Sonnenthal Grímur Björnsson Hannes Jónsson |
spellingShingle |
Edda S.P. Aradóttir Eric L. Sonnenthal Grímur Björnsson Hannes Jónsson Multidimensional reactive transport modeling of CO2 mineral sequestration in basalts at the Hellisheidi geothermal field, Iceland. |
author_facet |
Edda S.P. Aradóttir Eric L. Sonnenthal Grímur Björnsson Hannes Jónsson |
author_sort |
Edda S.P. Aradóttir |
title |
Multidimensional reactive transport modeling of CO2 mineral sequestration in basalts at the Hellisheidi geothermal field, Iceland. |
title_short |
Multidimensional reactive transport modeling of CO2 mineral sequestration in basalts at the Hellisheidi geothermal field, Iceland. |
title_full |
Multidimensional reactive transport modeling of CO2 mineral sequestration in basalts at the Hellisheidi geothermal field, Iceland. |
title_fullStr |
Multidimensional reactive transport modeling of CO2 mineral sequestration in basalts at the Hellisheidi geothermal field, Iceland. |
title_full_unstemmed |
Multidimensional reactive transport modeling of CO2 mineral sequestration in basalts at the Hellisheidi geothermal field, Iceland. |
title_sort |
multidimensional reactive transport modeling of co2 mineral sequestration in basalts at the hellisheidi geothermal field, iceland. |
publisher |
Zenodo |
publishDate |
2012 |
url |
https://doi.org/10.5281/zenodo.12893 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
https://doi.org/ https://doi.org/10.5281/zenodo.12893 oai:zenodo.org:12893 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.12893 |
_version_ |
1810451929881378816 |