Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics
Mineral carbonation in basaltic rock provides a permanent storage solution for the mitigation of anthropogenic CO 2 emissions in the atmosphere. 3D X-ray micro-CT (XCT) image analysis is applied to a core sample from the main basaltic reservoir of the CarbFix site in Iceland, which obtained a connec...
Published in: | International Journal of Greenhouse Gas Control |
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ftosti:oai:osti.gov:1538337 2024-01-21T10:07:24+01:00 Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics Callow, Ben Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg 2023-12-21 application/pdf http://www.osti.gov/servlets/purl/1538337 https://www.osti.gov/biblio/1538337 https://doi.org/10.1016/j.ijggc.2017.12.008 unknown http://www.osti.gov/servlets/purl/1538337 https://www.osti.gov/biblio/1538337 https://doi.org/10.1016/j.ijggc.2017.12.008 doi:10.1016/j.ijggc.2017.12.008 58 GEOSCIENCES 2023 ftosti https://doi.org/10.1016/j.ijggc.2017.12.008 2023-12-23T23:50:58Z Mineral carbonation in basaltic rock provides a permanent storage solution for the mitigation of anthropogenic CO 2 emissions in the atmosphere. 3D X-ray micro-CT (XCT) image analysis is applied to a core sample from the main basaltic reservoir of the CarbFix site in Iceland, which obtained a connected porosity of 2.05–8.76%, a reactive surface area of 0.10–0.33 mm -1 and a larger vertical permeability (2.07 × 10 -10 m 2 ) compared to horizontal permeability (5.10 × 10 -11 m 2 ). The calculations suggest a CO 2 storage capacity of 0.33 Gigatonnes at the CarbFix pilot site. The XCT results were compared to those obtained from a hydromechanical test applied to the same sample, during which permeability, electrical resistivity and volumetric deformation were measured under realistic reservoir pressure conditions. It was found that permeability is highly stress sensitive, dropping by two orders of magnitude for a -0.02% volumetric deformation change, equivalent to a mean pore diameter reduction of 5 μm. This pore contraction was insufficient to explain such a permeability reduction according to the XCT analysis, unless combined with the effects of clay swelling and secondary mineral pore clogging. Here the findings provide important benchmark data for the future upscaling and optimisation of CO 2 storage in basalt formations. Other/Unknown Material Iceland SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) International Journal of Greenhouse Gas Control 70 146 156 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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58 GEOSCIENCES |
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58 GEOSCIENCES Callow, Ben Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics |
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58 GEOSCIENCES |
description |
Mineral carbonation in basaltic rock provides a permanent storage solution for the mitigation of anthropogenic CO 2 emissions in the atmosphere. 3D X-ray micro-CT (XCT) image analysis is applied to a core sample from the main basaltic reservoir of the CarbFix site in Iceland, which obtained a connected porosity of 2.05–8.76%, a reactive surface area of 0.10–0.33 mm -1 and a larger vertical permeability (2.07 × 10 -10 m 2 ) compared to horizontal permeability (5.10 × 10 -11 m 2 ). The calculations suggest a CO 2 storage capacity of 0.33 Gigatonnes at the CarbFix pilot site. The XCT results were compared to those obtained from a hydromechanical test applied to the same sample, during which permeability, electrical resistivity and volumetric deformation were measured under realistic reservoir pressure conditions. It was found that permeability is highly stress sensitive, dropping by two orders of magnitude for a -0.02% volumetric deformation change, equivalent to a mean pore diameter reduction of 5 μm. This pore contraction was insufficient to explain such a permeability reduction according to the XCT analysis, unless combined with the effects of clay swelling and secondary mineral pore clogging. Here the findings provide important benchmark data for the future upscaling and optimisation of CO 2 storage in basalt formations. |
author |
Callow, Ben Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg |
author_facet |
Callow, Ben Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg |
author_sort |
Callow, Ben |
title |
Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics |
title_short |
Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics |
title_full |
Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics |
title_fullStr |
Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics |
title_full_unstemmed |
Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics |
title_sort |
assessing the carbon sequestration potential of basalt using x-ray micro-ct and rock mechanics |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1538337 https://www.osti.gov/biblio/1538337 https://doi.org/10.1016/j.ijggc.2017.12.008 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://www.osti.gov/servlets/purl/1538337 https://www.osti.gov/biblio/1538337 https://doi.org/10.1016/j.ijggc.2017.12.008 doi:10.1016/j.ijggc.2017.12.008 |
op_doi |
https://doi.org/10.1016/j.ijggc.2017.12.008 |
container_title |
International Journal of Greenhouse Gas Control |
container_volume |
70 |
container_start_page |
146 |
op_container_end_page |
156 |
_version_ |
1788697974127198208 |