Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics
Highlights • CO2 mineral carbonation storage capacity and reservoir properties of basalt assessed. • 3D X-Ray micro-CT image analysis of core samples determine pore network properties. • Hydromechanical tests show stress dependency of permeability at reservoir pressures. • Calculated CO2 storage cap...
Published in: | International Journal of Greenhouse Gas Control |
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Online Access: | https://oceanrep.geomar.de/id/eprint/48746/ https://oceanrep.geomar.de/id/eprint/48746/1/Callow.pdf https://doi.org/10.1016/j.ijggc.2017.12.008 |
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ftoceanrep:oai:oceanrep.geomar.de:48746 2023-05-15T16:48:48+02:00 Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics Callow, Ben Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg 2018 text https://oceanrep.geomar.de/id/eprint/48746/ https://oceanrep.geomar.de/id/eprint/48746/1/Callow.pdf https://doi.org/10.1016/j.ijggc.2017.12.008 en eng Elsevier https://oceanrep.geomar.de/id/eprint/48746/1/Callow.pdf Callow, B., Falcon-Suarez, I., Ahmed, S. and Matter, J. (2018) Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics. International Journal of Greenhouse Gas Control, 70 . pp. 146-156. DOI 10.1016/j.ijggc.2017.12.008 <https://doi.org/10.1016/j.ijggc.2017.12.008>. doi:10.1016/j.ijggc.2017.12.008 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2018 ftoceanrep https://doi.org/10.1016/j.ijggc.2017.12.008 2023-04-07T15:48:59Z Highlights • CO2 mineral carbonation storage capacity and reservoir properties of basalt assessed. • 3D X-Ray micro-CT image analysis of core samples determine pore network properties. • Hydromechanical tests show stress dependency of permeability at reservoir pressures. • Calculated CO2 storage capacity of 0.33 Gt CO2 at CarbFix site in Iceland. • Secondary mineral pore clogging may reduce CO2 storage capacity of basalt reservoirs. Abstract 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 0.10–0.33 mm−1 and a larger vertical permeability (2.07 × 10−10 m2) compared to horizontal permeability (5.10 × 10−11 m2). 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 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. The findings provide important benchmark data for the future upscaling and optimisation of CO2 storage in basalt formations. Article in Journal/Newspaper Iceland OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) International Journal of Greenhouse Gas Control 70 146 156 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Highlights • CO2 mineral carbonation storage capacity and reservoir properties of basalt assessed. • 3D X-Ray micro-CT image analysis of core samples determine pore network properties. • Hydromechanical tests show stress dependency of permeability at reservoir pressures. • Calculated CO2 storage capacity of 0.33 Gt CO2 at CarbFix site in Iceland. • Secondary mineral pore clogging may reduce CO2 storage capacity of basalt reservoirs. Abstract 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 0.10–0.33 mm−1 and a larger vertical permeability (2.07 × 10−10 m2) compared to horizontal permeability (5.10 × 10−11 m2). 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 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. 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 Falcon-Suarez, Ismael Ahmed, Sharif Matter, Juerg |
spellingShingle |
Callow, Ben 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 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 |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://oceanrep.geomar.de/id/eprint/48746/ https://oceanrep.geomar.de/id/eprint/48746/1/Callow.pdf https://doi.org/10.1016/j.ijggc.2017.12.008 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
https://oceanrep.geomar.de/id/eprint/48746/1/Callow.pdf Callow, B., Falcon-Suarez, I., Ahmed, S. and Matter, J. (2018) Assessing the carbon sequestration potential of basalt using X-ray micro-CT and rock mechanics. International Journal of Greenhouse Gas Control, 70 . pp. 146-156. DOI 10.1016/j.ijggc.2017.12.008 <https://doi.org/10.1016/j.ijggc.2017.12.008>. doi:10.1016/j.ijggc.2017.12.008 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
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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1766038898556796928 |