Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic
The Paleocene and Eocene strata in the western part of the FaroeShetland Basin contain abundant volcanic and volcaniclastic rocks. Recently, hydrocarbon discoveries have been made in reservoirs of siliciclastic origin in intra- and post-volcanic strata in the central Faroe-Shetland Basin that show a...
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Online Access: | https://curis.ku.dk/portal/da/publications/reservoir-quality-of-intrabasalt-volcaniclastic-units-onshore-faroe-islands-north-atlantic-igneous-province-northeast-atlantic(118213ce-ca88-496d-98e8-7bd2d864e2b7).html https://doi.org/10.1306/08061412084 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/118213ce-ca88-496d-98e8-7bd2d864e2b7 2023-10-25T01:38:27+02:00 Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic Ólavsdóttir, Jana Andersen, Morten Sparre Boldreel, Lars Ole 2015-03 https://curis.ku.dk/portal/da/publications/reservoir-quality-of-intrabasalt-volcaniclastic-units-onshore-faroe-islands-north-atlantic-igneous-province-northeast-atlantic(118213ce-ca88-496d-98e8-7bd2d864e2b7).html https://doi.org/10.1306/08061412084 eng eng info:eu-repo/semantics/closedAccess Ólavsdóttir , J , Andersen , M S & Boldreel , L O 2015 , ' Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic ' , A A P G Bulletin , vol. 99 , no. 3 , pp. 467-497 . https://doi.org/10.1306/08061412084 article 2015 ftcopenhagenunip https://doi.org/10.1306/08061412084 2023-09-27T22:59:58Z The Paleocene and Eocene strata in the western part of the FaroeShetland Basin contain abundant volcanic and volcaniclastic rocks. Recently, hydrocarbon discoveries have been made in reservoirs of siliciclastic origin in intra- and post-volcanic strata in the central Faroe-Shetland Basin that show an active petroleum system is present in the volcanic affected area. The siliciclastic reservoirs are present in the same stratigraphic levels as the volcanic and volcaniclastic rocks, and in places, the siliciclastics and the volcanics interfinger. The assumption from published studies so far, based on limited data, is that the volcanic and volcaniclastic rocks are nonreservoir facies. In this study, based on studies of 140 core samples representing more than 70 different volcaniclastic interbeds from onshore Faroe Islands, it is demonstrated that 18 samples are in the helium (He) porosity range of 20% to 43% and a gas permeability range of 1.0 to 110 md, and among these samples, 7 are of epiclastic and 11 of pyroclastic origins. These 18 samples have been investigated further. Among the seven samples of epiclastic origin, five stem from Glyvursnes-1 well Argir Beds that is a fluvial deposit located close to a fault. These samples are correlated and compared with the wireline logs from Glyvursnes-1. Based on this comparison, it is found that the porosity of the Argir Beds is best estimated from wireline logs using V P (P-wave seismic velocity), V S (S-wave seismic velocity), or resistivity logs. Onshore samples are used as Faroese offshore volcaniclastic intervals are represented by a few confidential samples where the stratigraphic level is uncertain. The onshore samples have been taken from 29 geotechnical (made related to tunnel building, etc.) and 2 scientific (made related to research of the geology) boreholes and represent almost the entire stratigraphic volcaniclastic interval onshore Faroe Islands. In addition, they also cover most of the Faroe Island area geographically. The intervals where the samples are ... Article in Journal/Newspaper Faroe Islands North Atlantic Northeast Atlantic University of Copenhagen: Research Argir ENVELOPE(-6.772,-6.772,61.996,61.996) Faroe Islands Glyvursnes ENVELOPE(-6.735,-6.735,61.981,61.981) AAPG Bulletin 99 03 467 497 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
The Paleocene and Eocene strata in the western part of the FaroeShetland Basin contain abundant volcanic and volcaniclastic rocks. Recently, hydrocarbon discoveries have been made in reservoirs of siliciclastic origin in intra- and post-volcanic strata in the central Faroe-Shetland Basin that show an active petroleum system is present in the volcanic affected area. The siliciclastic reservoirs are present in the same stratigraphic levels as the volcanic and volcaniclastic rocks, and in places, the siliciclastics and the volcanics interfinger. The assumption from published studies so far, based on limited data, is that the volcanic and volcaniclastic rocks are nonreservoir facies. In this study, based on studies of 140 core samples representing more than 70 different volcaniclastic interbeds from onshore Faroe Islands, it is demonstrated that 18 samples are in the helium (He) porosity range of 20% to 43% and a gas permeability range of 1.0 to 110 md, and among these samples, 7 are of epiclastic and 11 of pyroclastic origins. These 18 samples have been investigated further. Among the seven samples of epiclastic origin, five stem from Glyvursnes-1 well Argir Beds that is a fluvial deposit located close to a fault. These samples are correlated and compared with the wireline logs from Glyvursnes-1. Based on this comparison, it is found that the porosity of the Argir Beds is best estimated from wireline logs using V P (P-wave seismic velocity), V S (S-wave seismic velocity), or resistivity logs. Onshore samples are used as Faroese offshore volcaniclastic intervals are represented by a few confidential samples where the stratigraphic level is uncertain. The onshore samples have been taken from 29 geotechnical (made related to tunnel building, etc.) and 2 scientific (made related to research of the geology) boreholes and represent almost the entire stratigraphic volcaniclastic interval onshore Faroe Islands. In addition, they also cover most of the Faroe Island area geographically. The intervals where the samples are ... |
format |
Article in Journal/Newspaper |
author |
Ólavsdóttir, Jana Andersen, Morten Sparre Boldreel, Lars Ole |
spellingShingle |
Ólavsdóttir, Jana Andersen, Morten Sparre Boldreel, Lars Ole Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic |
author_facet |
Ólavsdóttir, Jana Andersen, Morten Sparre Boldreel, Lars Ole |
author_sort |
Ólavsdóttir, Jana |
title |
Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic |
title_short |
Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic |
title_full |
Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic |
title_fullStr |
Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic |
title_full_unstemmed |
Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic |
title_sort |
reservoir quality of intrabasalt volcaniclastic units onshore faroe islands, north atlantic igneous province, northeast atlantic |
publishDate |
2015 |
url |
https://curis.ku.dk/portal/da/publications/reservoir-quality-of-intrabasalt-volcaniclastic-units-onshore-faroe-islands-north-atlantic-igneous-province-northeast-atlantic(118213ce-ca88-496d-98e8-7bd2d864e2b7).html https://doi.org/10.1306/08061412084 |
long_lat |
ENVELOPE(-6.772,-6.772,61.996,61.996) ENVELOPE(-6.735,-6.735,61.981,61.981) |
geographic |
Argir Faroe Islands Glyvursnes |
geographic_facet |
Argir Faroe Islands Glyvursnes |
genre |
Faroe Islands North Atlantic Northeast Atlantic |
genre_facet |
Faroe Islands North Atlantic Northeast Atlantic |
op_source |
Ólavsdóttir , J , Andersen , M S & Boldreel , L O 2015 , ' Reservoir quality of intrabasalt volcaniclastic units onshore Faroe Islands, North Atlantic Igneous Province, northeast Atlantic ' , A A P G Bulletin , vol. 99 , no. 3 , pp. 467-497 . https://doi.org/10.1306/08061412084 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1306/08061412084 |
container_title |
AAPG Bulletin |
container_volume |
99 |
container_issue |
03 |
container_start_page |
467 |
op_container_end_page |
497 |
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1780733431847583744 |