Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen
The Upper Triassic to Middle Jurassic Wilhelmøya Subgroup forms one of the more suitable reservoir units on the Norwegian Arctic archipelago of Svalbard. The target siliciclastic storage unit, which is encountered at approx. 670 m depth at the potential injection site in Adventdalen, central Spitsbe...
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2592744 2023-05-15T13:05:43+02:00 Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen Mulrooney, Mark Joseph Larsen, Leif Van Stappen, Jeroen Rismyhr, Bjarte Senger, Kim Braathen, Alvar Olaussen, Snorre Mørk, Mai Britt Engeness Ogata, Kei Cnudde, Veerle 2018 http://hdl.handle.net/11250/2592744 https://doi.org/10.17850/njg002 eng eng Geological Society of Norway http://njg.geologi.no/images/NJG_articles/NJG_Vol99_NrXX_ArtXX_Mulrooney.pdf Norsk Geologisk Tidsskrift. 2018, 99 . urn:issn:0029-196X http://hdl.handle.net/11250/2592744 https://doi.org/10.17850/njg002 cristin:1648340 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 32 99 Norsk Geologisk Tidsskrift Journal article Peer reviewed 2018 ftntnutrondheimi https://doi.org/10.17850/njg002 2019-09-17T06:54:49Z The Upper Triassic to Middle Jurassic Wilhelmøya Subgroup forms one of the more suitable reservoir units on the Norwegian Arctic archipelago of Svalbard. The target siliciclastic storage unit, which is encountered at approx. 670 m depth at the potential injection site in Adventdalen, central Spitsbergen, is a severely under-pressured (at least 35 bar), tight and compartmentalised reservoir with significant contribution of natural fractures to permeability. In this contribution, we characterise the 15–24 m-thick Wilhelmøya Subgroup storage unit using both borehole and outcrop data and present water-injection test results that indicate the presence of fluid-flow barriers and the generation of new, and propagation of pre-existing natural fractures during injection. Whole core samples from drillcores and outcrops were sampled for pore network characterisation and analysed using high-resolution X-ray computed tomography (Micro-CT). We demonstrate that heterogeneities such as structural discontinuities, igneous bodies and lateral facies variations, as examined in well core and equivalent outcrops, will strongly influence fluid flow in the target reservoir, both by steering and baffling fluid migration. Many of these heterogeneities are considered to be subseismic, and their detailed characterisation is important to predict subsurface CO2 storage potential and optimise injection strategy. publishedVersion © Copyright the authors. This work is licensed under a Creative Commons Attribution 4.0 International License. Article in Journal/Newspaper Adventdalen Arctic Archipelago Arctic Svalbard Wilhelmøya Spitsbergen NTNU Open Archive (Norwegian University of Science and Technology) Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Arctic Svalbard Wilhelmøya ENVELOPE(20.418,20.418,79.062,79.062) Norwegian Journal of Geology |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
The Upper Triassic to Middle Jurassic Wilhelmøya Subgroup forms one of the more suitable reservoir units on the Norwegian Arctic archipelago of Svalbard. The target siliciclastic storage unit, which is encountered at approx. 670 m depth at the potential injection site in Adventdalen, central Spitsbergen, is a severely under-pressured (at least 35 bar), tight and compartmentalised reservoir with significant contribution of natural fractures to permeability. In this contribution, we characterise the 15–24 m-thick Wilhelmøya Subgroup storage unit using both borehole and outcrop data and present water-injection test results that indicate the presence of fluid-flow barriers and the generation of new, and propagation of pre-existing natural fractures during injection. Whole core samples from drillcores and outcrops were sampled for pore network characterisation and analysed using high-resolution X-ray computed tomography (Micro-CT). We demonstrate that heterogeneities such as structural discontinuities, igneous bodies and lateral facies variations, as examined in well core and equivalent outcrops, will strongly influence fluid flow in the target reservoir, both by steering and baffling fluid migration. Many of these heterogeneities are considered to be subseismic, and their detailed characterisation is important to predict subsurface CO2 storage potential and optimise injection strategy. publishedVersion © Copyright the authors. This work is licensed under a Creative Commons Attribution 4.0 International License. |
format |
Article in Journal/Newspaper |
author |
Mulrooney, Mark Joseph Larsen, Leif Van Stappen, Jeroen Rismyhr, Bjarte Senger, Kim Braathen, Alvar Olaussen, Snorre Mørk, Mai Britt Engeness Ogata, Kei Cnudde, Veerle |
spellingShingle |
Mulrooney, Mark Joseph Larsen, Leif Van Stappen, Jeroen Rismyhr, Bjarte Senger, Kim Braathen, Alvar Olaussen, Snorre Mørk, Mai Britt Engeness Ogata, Kei Cnudde, Veerle Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen |
author_facet |
Mulrooney, Mark Joseph Larsen, Leif Van Stappen, Jeroen Rismyhr, Bjarte Senger, Kim Braathen, Alvar Olaussen, Snorre Mørk, Mai Britt Engeness Ogata, Kei Cnudde, Veerle |
author_sort |
Mulrooney, Mark Joseph |
title |
Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen |
title_short |
Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen |
title_full |
Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen |
title_fullStr |
Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen |
title_full_unstemmed |
Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen |
title_sort |
fluid flow properties of the wilhelmøya subgroup, a potential unconventional co2 storage unit in central spitsbergen |
publisher |
Geological Society of Norway |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2592744 https://doi.org/10.17850/njg002 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) ENVELOPE(20.418,20.418,79.062,79.062) |
geographic |
Adventdalen Arctic Svalbard Wilhelmøya |
geographic_facet |
Adventdalen Arctic Svalbard Wilhelmøya |
genre |
Adventdalen Arctic Archipelago Arctic Svalbard Wilhelmøya Spitsbergen |
genre_facet |
Adventdalen Arctic Archipelago Arctic Svalbard Wilhelmøya Spitsbergen |
op_source |
32 99 Norsk Geologisk Tidsskrift |
op_relation |
http://njg.geologi.no/images/NJG_articles/NJG_Vol99_NrXX_ArtXX_Mulrooney.pdf Norsk Geologisk Tidsskrift. 2018, 99 . urn:issn:0029-196X http://hdl.handle.net/11250/2592744 https://doi.org/10.17850/njg002 cristin:1648340 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.17850/njg002 |
container_title |
Norwegian Journal of Geology |
_version_ |
1766391936410714112 |