The importance of natural fractures in a tight reservoir for potential CO2 storage: A case study of the upper Triassic-middle Jurassic Kapp Toscana Group (Spitsbergen, Arctic Norway)
In the Longyearbyen CO2 laboratory project, it is planned to inject carbon dioxide into a Triassic-Jurassic fractured sandstone-shale succession (Kapp Toscana Group) at a depth of 700- 1000 m below the local settlement. The targeted storage sandstones offer moderate secondary porosity and low permea...
Published in: | Geological Society, London, Special Publications |
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Online Access: | http://hdl.handle.net/11588/820167 https://doi.org/10.1144/SP374.9 |
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ftunivnapoliiris:oai:www.iris.unina.it:11588/820167 2024-06-23T07:50:38+00:00 The importance of natural fractures in a tight reservoir for potential CO2 storage: A case study of the upper Triassic-middle Jurassic Kapp Toscana Group (Spitsbergen, Arctic Norway) Ogata K. Senger K. Braathen A. Tveranger J. Olaussen S. Ogata, K. Senger, K. Braathen, A. Tveranger, J. Olaussen, S. 2014 http://hdl.handle.net/11588/820167 https://doi.org/10.1144/SP374.9 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000355195800019 ispartofbook:Advances in the Study of Fractured Reservoirs volume:374 firstpage:395 lastpage:415 numberofpages:21 http://hdl.handle.net/11588/820167 doi:10.1144/SP374.9 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84929875339 info:eu-repo/semantics/bookPart 2014 ftunivnapoliiris https://doi.org/10.1144/SP374.9 2024-06-10T14:58:52Z In the Longyearbyen CO2 laboratory project, it is planned to inject carbon dioxide into a Triassic-Jurassic fractured sandstone-shale succession (Kapp Toscana Group) at a depth of 700- 1000 m below the local settlement. The targeted storage sandstones offer moderate secondary porosity and low permeability (unconventional reservoir), whereas water injection tests evidence good lateral fluid flow facilitated by extensive fracturing. Therefore, a detailed investigation of fracture sets/discontinuities and their characteristics have been undertaken, concentrating on the upper reservoir interval (670-706 m). Datasets include drill cores and well logs, and observations of outcrops, that mainly show fracturing but also some disaggregation deformation bands in the sandstones. The fracture distribution has a lithostratigraphical relationship, and can be subdivided into: (A) massive to laminated shaly intervals, offering abundant lower-angle shear fractures; (B) massive to thin-bedded, heterogeneous, mixed silty-shaly intervals, with a predominance of non-systematic, pervasive bed-confined fractures; and (C) massive to laminated, medium- to thick-bedded, fine- to coarse-grained sandstones with a lower frequency of mostly steep fractures. These domains represent pseudo-geomechanical units characterized by specific fracture sets and fracture intensity, with indicated relationships between the bed thickness and fracture intensity, and with domains separated along bedding interfaces. We discuss the impact of these lithostructural domains on the fluid flow pathways in the heterolithic storage unit. Book Part Arctic Longyearbyen Spitsbergen IRIS Università degli Studi di Napoli Federico II Arctic Longyearbyen Norway Kapp Toscana ENVELOPE(15.075,15.075,77.553,77.553) Geological Society, London, Special Publications 374 1 395 415 |
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Open Polar |
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IRIS Università degli Studi di Napoli Federico II |
op_collection_id |
ftunivnapoliiris |
language |
English |
description |
In the Longyearbyen CO2 laboratory project, it is planned to inject carbon dioxide into a Triassic-Jurassic fractured sandstone-shale succession (Kapp Toscana Group) at a depth of 700- 1000 m below the local settlement. The targeted storage sandstones offer moderate secondary porosity and low permeability (unconventional reservoir), whereas water injection tests evidence good lateral fluid flow facilitated by extensive fracturing. Therefore, a detailed investigation of fracture sets/discontinuities and their characteristics have been undertaken, concentrating on the upper reservoir interval (670-706 m). Datasets include drill cores and well logs, and observations of outcrops, that mainly show fracturing but also some disaggregation deformation bands in the sandstones. The fracture distribution has a lithostratigraphical relationship, and can be subdivided into: (A) massive to laminated shaly intervals, offering abundant lower-angle shear fractures; (B) massive to thin-bedded, heterogeneous, mixed silty-shaly intervals, with a predominance of non-systematic, pervasive bed-confined fractures; and (C) massive to laminated, medium- to thick-bedded, fine- to coarse-grained sandstones with a lower frequency of mostly steep fractures. These domains represent pseudo-geomechanical units characterized by specific fracture sets and fracture intensity, with indicated relationships between the bed thickness and fracture intensity, and with domains separated along bedding interfaces. We discuss the impact of these lithostructural domains on the fluid flow pathways in the heterolithic storage unit. |
author2 |
Ogata, K. Senger, K. Braathen, A. Tveranger, J. Olaussen, S. |
format |
Book Part |
author |
Ogata K. Senger K. Braathen A. Tveranger J. Olaussen S. |
spellingShingle |
Ogata K. Senger K. Braathen A. Tveranger J. Olaussen S. The importance of natural fractures in a tight reservoir for potential CO2 storage: A case study of the upper Triassic-middle Jurassic Kapp Toscana Group (Spitsbergen, Arctic Norway) |
author_facet |
Ogata K. Senger K. Braathen A. Tveranger J. Olaussen S. |
author_sort |
Ogata K. |
title |
The importance of natural fractures in a tight reservoir for potential CO2 storage: A case study of the upper Triassic-middle Jurassic Kapp Toscana Group (Spitsbergen, Arctic Norway) |
title_short |
The importance of natural fractures in a tight reservoir for potential CO2 storage: A case study of the upper Triassic-middle Jurassic Kapp Toscana Group (Spitsbergen, Arctic Norway) |
title_full |
The importance of natural fractures in a tight reservoir for potential CO2 storage: A case study of the upper Triassic-middle Jurassic Kapp Toscana Group (Spitsbergen, Arctic Norway) |
title_fullStr |
The importance of natural fractures in a tight reservoir for potential CO2 storage: A case study of the upper Triassic-middle Jurassic Kapp Toscana Group (Spitsbergen, Arctic Norway) |
title_full_unstemmed |
The importance of natural fractures in a tight reservoir for potential CO2 storage: A case study of the upper Triassic-middle Jurassic Kapp Toscana Group (Spitsbergen, Arctic Norway) |
title_sort |
importance of natural fractures in a tight reservoir for potential co2 storage: a case study of the upper triassic-middle jurassic kapp toscana group (spitsbergen, arctic norway) |
publishDate |
2014 |
url |
http://hdl.handle.net/11588/820167 https://doi.org/10.1144/SP374.9 |
long_lat |
ENVELOPE(15.075,15.075,77.553,77.553) |
geographic |
Arctic Longyearbyen Norway Kapp Toscana |
geographic_facet |
Arctic Longyearbyen Norway Kapp Toscana |
genre |
Arctic Longyearbyen Spitsbergen |
genre_facet |
Arctic Longyearbyen Spitsbergen |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000355195800019 ispartofbook:Advances in the Study of Fractured Reservoirs volume:374 firstpage:395 lastpage:415 numberofpages:21 http://hdl.handle.net/11588/820167 doi:10.1144/SP374.9 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84929875339 |
op_doi |
https://doi.org/10.1144/SP374.9 |
container_title |
Geological Society, London, Special Publications |
container_volume |
374 |
container_issue |
1 |
container_start_page |
395 |
op_container_end_page |
415 |
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1802641548560564224 |