In situ triaxial testing to determine fracture permeability and aperture distribution for CO2 sequestration in Svalbard, Norway
On Svalbard, Arctic Norway, an unconventional silicidastic reservoir, relying on (micro)fractures for enhanced fluid flow in a low-permeable system, is investigated as a potential CO2 sequestration site. The fractures' properties at depth are, however, poorly understood. High resolution X-ray c...
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ftunivgent:oai:archive.ugent.be:8559230 2023-06-11T04:09:38+02:00 In situ triaxial testing to determine fracture permeability and aperture distribution for CO2 sequestration in Svalbard, Norway Van Stappen, Jeroen Meftah, Redouane Boone, Marijn Bultreys, Tom De Kock, Tim Blykers, Benjamin Senger, Kim Olaussen, Snorre Cnudde, Veerle 2018 application/pdf https://biblio.ugent.be/publication/8559230 http://hdl.handle.net/1854/LU-8559230 https://doi.org/10.1021/acs.est.8b00861 https://biblio.ugent.be/publication/8559230/file/8559231 eng eng https://biblio.ugent.be/publication/8559230 http://hdl.handle.net/1854/LU-8559230 http://dx.doi.org/10.1021/acs.est.8b00861 https://biblio.ugent.be/publication/8559230/file/8559231 No license (in copyright) info:eu-repo/semantics/restrictedAccess ENVIRONMENTAL SCIENCE & TECHNOLOGY ISSN: 0013-936X ISSN: 1520-5851 Earth and Environmental Sciences RAY COMPUTED-TOMOGRAPHY FLUID-FLOW MICRO-CT PORE-SCALE RESERVOIR SANDSTONES LAB STORAGE COAL SEGMENTATION VALIDITY journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftunivgent https://doi.org/10.1021/acs.est.8b00861 2023-04-19T22:12:21Z On Svalbard, Arctic Norway, an unconventional silicidastic reservoir, relying on (micro)fractures for enhanced fluid flow in a low-permeable system, is investigated as a potential CO2 sequestration site. The fractures' properties at depth are, however, poorly understood. High resolution X-ray computed tomography (micro-CT) imaging allows one to visualize such geomaterials at reservoir conditions. We investigated reservoir samples from the De Geerdalen Formation on Svalbard to understand the influence of fracture closure on the reservoir fluid flow behavior. Small rock plugs were brought to reservoir conditions, while permeability was measured through them during micro-CT imaging. Local fracture apertures were quantified down to a few micrometers wide. The permeability measurements were complemented with fracture permeability simulations based on the obtained micro-CT images. The relationship between fracture permeability and the imposed confining pressure was determined and linked to the fracture apertures. The investigated fractures closed due to the increased confining pressure, with apertures reducing to approximately 40% of their original size as the confining pressure increased from 1 to 10 MPa. This coincides with a permeability drop of more than 90%. Despite their closure, fluid flow is still controlled by the fractures at pressure conditions similar to those at the proposed storage depth of 800-1000 m. Article in Journal/Newspaper Arctic Svalbard Ghent University Academic Bibliography Arctic Svalbard Norway Small Rock ENVELOPE(-45.592,-45.592,-60.702,-60.702) De Geerdalen ENVELOPE(16.368,16.368,78.296,78.296) Environmental Science & Technology 52 8 4546 4554 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences RAY COMPUTED-TOMOGRAPHY FLUID-FLOW MICRO-CT PORE-SCALE RESERVOIR SANDSTONES LAB STORAGE COAL SEGMENTATION VALIDITY |
spellingShingle |
Earth and Environmental Sciences RAY COMPUTED-TOMOGRAPHY FLUID-FLOW MICRO-CT PORE-SCALE RESERVOIR SANDSTONES LAB STORAGE COAL SEGMENTATION VALIDITY Van Stappen, Jeroen Meftah, Redouane Boone, Marijn Bultreys, Tom De Kock, Tim Blykers, Benjamin Senger, Kim Olaussen, Snorre Cnudde, Veerle In situ triaxial testing to determine fracture permeability and aperture distribution for CO2 sequestration in Svalbard, Norway |
topic_facet |
Earth and Environmental Sciences RAY COMPUTED-TOMOGRAPHY FLUID-FLOW MICRO-CT PORE-SCALE RESERVOIR SANDSTONES LAB STORAGE COAL SEGMENTATION VALIDITY |
description |
On Svalbard, Arctic Norway, an unconventional silicidastic reservoir, relying on (micro)fractures for enhanced fluid flow in a low-permeable system, is investigated as a potential CO2 sequestration site. The fractures' properties at depth are, however, poorly understood. High resolution X-ray computed tomography (micro-CT) imaging allows one to visualize such geomaterials at reservoir conditions. We investigated reservoir samples from the De Geerdalen Formation on Svalbard to understand the influence of fracture closure on the reservoir fluid flow behavior. Small rock plugs were brought to reservoir conditions, while permeability was measured through them during micro-CT imaging. Local fracture apertures were quantified down to a few micrometers wide. The permeability measurements were complemented with fracture permeability simulations based on the obtained micro-CT images. The relationship between fracture permeability and the imposed confining pressure was determined and linked to the fracture apertures. The investigated fractures closed due to the increased confining pressure, with apertures reducing to approximately 40% of their original size as the confining pressure increased from 1 to 10 MPa. This coincides with a permeability drop of more than 90%. Despite their closure, fluid flow is still controlled by the fractures at pressure conditions similar to those at the proposed storage depth of 800-1000 m. |
format |
Article in Journal/Newspaper |
author |
Van Stappen, Jeroen Meftah, Redouane Boone, Marijn Bultreys, Tom De Kock, Tim Blykers, Benjamin Senger, Kim Olaussen, Snorre Cnudde, Veerle |
author_facet |
Van Stappen, Jeroen Meftah, Redouane Boone, Marijn Bultreys, Tom De Kock, Tim Blykers, Benjamin Senger, Kim Olaussen, Snorre Cnudde, Veerle |
author_sort |
Van Stappen, Jeroen |
title |
In situ triaxial testing to determine fracture permeability and aperture distribution for CO2 sequestration in Svalbard, Norway |
title_short |
In situ triaxial testing to determine fracture permeability and aperture distribution for CO2 sequestration in Svalbard, Norway |
title_full |
In situ triaxial testing to determine fracture permeability and aperture distribution for CO2 sequestration in Svalbard, Norway |
title_fullStr |
In situ triaxial testing to determine fracture permeability and aperture distribution for CO2 sequestration in Svalbard, Norway |
title_full_unstemmed |
In situ triaxial testing to determine fracture permeability and aperture distribution for CO2 sequestration in Svalbard, Norway |
title_sort |
in situ triaxial testing to determine fracture permeability and aperture distribution for co2 sequestration in svalbard, norway |
publishDate |
2018 |
url |
https://biblio.ugent.be/publication/8559230 http://hdl.handle.net/1854/LU-8559230 https://doi.org/10.1021/acs.est.8b00861 https://biblio.ugent.be/publication/8559230/file/8559231 |
long_lat |
ENVELOPE(-45.592,-45.592,-60.702,-60.702) ENVELOPE(16.368,16.368,78.296,78.296) |
geographic |
Arctic Svalbard Norway Small Rock De Geerdalen |
geographic_facet |
Arctic Svalbard Norway Small Rock De Geerdalen |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_source |
ENVIRONMENTAL SCIENCE & TECHNOLOGY ISSN: 0013-936X ISSN: 1520-5851 |
op_relation |
https://biblio.ugent.be/publication/8559230 http://hdl.handle.net/1854/LU-8559230 http://dx.doi.org/10.1021/acs.est.8b00861 https://biblio.ugent.be/publication/8559230/file/8559231 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1021/acs.est.8b00861 |
container_title |
Environmental Science & Technology |
container_volume |
52 |
container_issue |
8 |
container_start_page |
4546 |
op_container_end_page |
4554 |
_version_ |
1768383592219541504 |