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 CO2 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 connect...
Published in: | International Journal of Greenhouse Gas Control |
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2018
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Online Access: | https://eprints.soton.ac.uk/418472/ https://eprints.soton.ac.uk/418472/1/IJGGC2340_BenCallow_etal_2018.pdf |
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ftsouthampton:oai:eprints.soton.ac.uk:418472 2024-05-19T07:42:50+00:00 Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics Callow, Ben, James Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg 2018-03 text https://eprints.soton.ac.uk/418472/ https://eprints.soton.ac.uk/418472/1/IJGGC2340_BenCallow_etal_2018.pdf en English eng https://eprints.soton.ac.uk/418472/1/IJGGC2340_BenCallow_etal_2018.pdf Callow, Ben, James, Falcon-Suarez, Ismael, Ahmed, Sharif and Matter, Juerg (2018) Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics. International Journal of Greenhouse Gas Control, 70, 146-156. (doi:10.1016/j.ijggc.2017.12.008 <http://dx.doi.org/10.1016/j.ijggc.2017.12.008>). cc_by_nc_nd_4 Article PeerReviewed 2018 ftsouthampton https://doi.org/10.1016/j.ijggc.2017.12.008 2024-04-30T23:32:53Z Mineral carbonation in basaltic rock provides a permanent storage solution for the mitigation of anthropogenic CO2 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 0.10–0.33mm−1 and a larger vertical permeability (2.07×10−10m2) compared to horizontal permeability (5.10×10−11m2). The calculations suggest a CO2 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 5μm. 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. The findings provide important benchmark data for the future upscaling and optimisation of CO2 storage in basalt formations. Article in Journal/Newspaper Iceland University of Southampton: e-Prints Soton International Journal of Greenhouse Gas Control 70 146 156 |
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Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Mineral carbonation in basaltic rock provides a permanent storage solution for the mitigation of anthropogenic CO2 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 0.10–0.33mm−1 and a larger vertical permeability (2.07×10−10m2) compared to horizontal permeability (5.10×10−11m2). The calculations suggest a CO2 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 5μm. 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. The findings provide important benchmark data for the future upscaling and optimisation of CO2 storage in basalt formations. |
format |
Article in Journal/Newspaper |
author |
Callow, Ben, James Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg |
spellingShingle |
Callow, Ben, James Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics |
author_facet |
Callow, Ben, James Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg |
author_sort |
Callow, Ben, James |
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 |
2018 |
url |
https://eprints.soton.ac.uk/418472/ https://eprints.soton.ac.uk/418472/1/IJGGC2340_BenCallow_etal_2018.pdf |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
https://eprints.soton.ac.uk/418472/1/IJGGC2340_BenCallow_etal_2018.pdf Callow, Ben, James, Falcon-Suarez, Ismael, Ahmed, Sharif and Matter, Juerg (2018) Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics. International Journal of Greenhouse Gas Control, 70, 146-156. (doi:10.1016/j.ijggc.2017.12.008 <http://dx.doi.org/10.1016/j.ijggc.2017.12.008>). |
op_rights |
cc_by_nc_nd_4 |
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 |
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1799482535852376064 |