The Iceland Deep Drilling Project at Reykjanes: Drilling into the root zone of a black smoker analog
International audience The aim of the Iceland Deep Drilling Project is to drill into supercritical geothermal systems and examine their economic potential. The exploratory well IDDP-2 was drilled in the Reykjanes geothermal field in SW Iceland, on the landward extension of the Mid-Atlantic Ridge. Th...
Published in: | Journal of Volcanology and Geothermal Research |
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Language: | English |
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Online Access: | https://hal.umontpellier.fr/hal-02131788 https://doi.org/10.1016/j.jvolgeores.2018.08.013 |
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ftunimontpellier:oai:HAL:hal-02131788v1 2023-05-15T16:48:03+02:00 The Iceland Deep Drilling Project at Reykjanes: Drilling into the root zone of a black smoker analog Friðleifsson, Guðmundur Ó. Elders, Wilfred Zierenberg, Robert Fowler, Andrew P.G. Weisenberger, Tobias Mesfin, Kiflom Sigurðsson, Ómar Níelsson, Steinþór Einarsson, Gunnlaugur Óskarsson, Finnbogi Guðnason, Egill Á. Tulinius, Helga Hokstad, Ketil Gibert, Benoit Nono, Frank Loggia, Didier Parat, Fleurice Cichy, Sarah Escobedo, David Mainprice, David Géosciences Montpellier Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Université de Pau et des Pays de l'Adour (UPPA) GeoForschungsZentrum - Helmholtz-Zentrum Potsdam (GFZ) 2019 https://hal.umontpellier.fr/hal-02131788 https://doi.org/10.1016/j.jvolgeores.2018.08.013 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2018.08.013 hal-02131788 https://hal.umontpellier.fr/hal-02131788 doi:10.1016/j.jvolgeores.2018.08.013 ISSN: 0377-0273 Journal of Volcanology and Geothermal Research https://hal.umontpellier.fr/hal-02131788 Journal of Volcanology and Geothermal Research, In press, ⟨10.1016/j.jvolgeores.2018.08.013⟩ IDDP Reykjanes Supercritical fluids Deep drilling Black smokers Geothermal [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2019 ftunimontpellier https://doi.org/10.1016/j.jvolgeores.2018.08.013 2023-03-14T23:57:29Z International audience The aim of the Iceland Deep Drilling Project is to drill into supercritical geothermal systems and examine their economic potential. The exploratory well IDDP-2 was drilled in the Reykjanes geothermal field in SW Iceland, on the landward extension of the Mid-Atlantic Ridge. The Reykjanes geothermal field produces from a <300 °C reservoir at 1 to 2.5 km depth and is unusual because it is recharged by seawater. The well was cased to 3000 m depth, and then angled towards the main up-flow zone of the system, to a total slant depth of 4659 m (~4500 m vertical depth). Based on alteration mineral assemblages, joint inversion of wireline logging, and rate of heating measurements, the bottom hole temperature is estimated to be about 535 °C.The major problem encountered during drilling was the total loss of circulation below 3 km depth and continuing to the final depth. Drilling continued without recovering drill cuttings, consequently spot coring provided the only deep rock samples from the well. These cores are characteristic of a basaltic sheeted dike complex, with hydrothermal alteration mineral assemblages that range from greenschist to amphibolite facies, hornblende hornfels, and pyroxene hornfels, allowing the opportunity to investigate water-rock interaction in the active roots of an analog of a submarine hydrothermal system. As they have not yet been sampled, the composition of the deep fluids at Reykjanes is unknown at present. Cold water is currently being injected with the aim of enhancing permeability at depth, before allowing the well to heat up prior to flow tests planned for early 2019. The well has at least two fluid feed zones, a dominant one at 3.4 km depth and a second smaller one at 4.5 km.Extensive geophysical surveys of the Reykjanes Peninsula completed recently allow correlation of geophysical signals with rocks properties and in-situ conditions in the subsurface. Earthquake activity monitored with a local seismic network during drilling the IDDP-2 drilling detected ... Article in Journal/Newspaper Iceland Université de Montpellier: HAL Mid-Atlantic Ridge Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Journal of Volcanology and Geothermal Research 391 106435 |
institution |
Open Polar |
collection |
Université de Montpellier: HAL |
op_collection_id |
ftunimontpellier |
language |
English |
topic |
IDDP Reykjanes Supercritical fluids Deep drilling Black smokers Geothermal [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
IDDP Reykjanes Supercritical fluids Deep drilling Black smokers Geothermal [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Friðleifsson, Guðmundur Ó. Elders, Wilfred Zierenberg, Robert Fowler, Andrew P.G. Weisenberger, Tobias Mesfin, Kiflom Sigurðsson, Ómar Níelsson, Steinþór Einarsson, Gunnlaugur Óskarsson, Finnbogi Guðnason, Egill Á. Tulinius, Helga Hokstad, Ketil Gibert, Benoit Nono, Frank Loggia, Didier Parat, Fleurice Cichy, Sarah Escobedo, David Mainprice, David The Iceland Deep Drilling Project at Reykjanes: Drilling into the root zone of a black smoker analog |
topic_facet |
IDDP Reykjanes Supercritical fluids Deep drilling Black smokers Geothermal [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience The aim of the Iceland Deep Drilling Project is to drill into supercritical geothermal systems and examine their economic potential. The exploratory well IDDP-2 was drilled in the Reykjanes geothermal field in SW Iceland, on the landward extension of the Mid-Atlantic Ridge. The Reykjanes geothermal field produces from a <300 °C reservoir at 1 to 2.5 km depth and is unusual because it is recharged by seawater. The well was cased to 3000 m depth, and then angled towards the main up-flow zone of the system, to a total slant depth of 4659 m (~4500 m vertical depth). Based on alteration mineral assemblages, joint inversion of wireline logging, and rate of heating measurements, the bottom hole temperature is estimated to be about 535 °C.The major problem encountered during drilling was the total loss of circulation below 3 km depth and continuing to the final depth. Drilling continued without recovering drill cuttings, consequently spot coring provided the only deep rock samples from the well. These cores are characteristic of a basaltic sheeted dike complex, with hydrothermal alteration mineral assemblages that range from greenschist to amphibolite facies, hornblende hornfels, and pyroxene hornfels, allowing the opportunity to investigate water-rock interaction in the active roots of an analog of a submarine hydrothermal system. As they have not yet been sampled, the composition of the deep fluids at Reykjanes is unknown at present. Cold water is currently being injected with the aim of enhancing permeability at depth, before allowing the well to heat up prior to flow tests planned for early 2019. The well has at least two fluid feed zones, a dominant one at 3.4 km depth and a second smaller one at 4.5 km.Extensive geophysical surveys of the Reykjanes Peninsula completed recently allow correlation of geophysical signals with rocks properties and in-situ conditions in the subsurface. Earthquake activity monitored with a local seismic network during drilling the IDDP-2 drilling detected ... |
author2 |
Géosciences Montpellier Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Université de Pau et des Pays de l'Adour (UPPA) GeoForschungsZentrum - Helmholtz-Zentrum Potsdam (GFZ) |
format |
Article in Journal/Newspaper |
author |
Friðleifsson, Guðmundur Ó. Elders, Wilfred Zierenberg, Robert Fowler, Andrew P.G. Weisenberger, Tobias Mesfin, Kiflom Sigurðsson, Ómar Níelsson, Steinþór Einarsson, Gunnlaugur Óskarsson, Finnbogi Guðnason, Egill Á. Tulinius, Helga Hokstad, Ketil Gibert, Benoit Nono, Frank Loggia, Didier Parat, Fleurice Cichy, Sarah Escobedo, David Mainprice, David |
author_facet |
Friðleifsson, Guðmundur Ó. Elders, Wilfred Zierenberg, Robert Fowler, Andrew P.G. Weisenberger, Tobias Mesfin, Kiflom Sigurðsson, Ómar Níelsson, Steinþór Einarsson, Gunnlaugur Óskarsson, Finnbogi Guðnason, Egill Á. Tulinius, Helga Hokstad, Ketil Gibert, Benoit Nono, Frank Loggia, Didier Parat, Fleurice Cichy, Sarah Escobedo, David Mainprice, David |
author_sort |
Friðleifsson, Guðmundur Ó. |
title |
The Iceland Deep Drilling Project at Reykjanes: Drilling into the root zone of a black smoker analog |
title_short |
The Iceland Deep Drilling Project at Reykjanes: Drilling into the root zone of a black smoker analog |
title_full |
The Iceland Deep Drilling Project at Reykjanes: Drilling into the root zone of a black smoker analog |
title_fullStr |
The Iceland Deep Drilling Project at Reykjanes: Drilling into the root zone of a black smoker analog |
title_full_unstemmed |
The Iceland Deep Drilling Project at Reykjanes: Drilling into the root zone of a black smoker analog |
title_sort |
iceland deep drilling project at reykjanes: drilling into the root zone of a black smoker analog |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.umontpellier.fr/hal-02131788 https://doi.org/10.1016/j.jvolgeores.2018.08.013 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Mid-Atlantic Ridge Reykjanes |
geographic_facet |
Mid-Atlantic Ridge Reykjanes |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
ISSN: 0377-0273 Journal of Volcanology and Geothermal Research https://hal.umontpellier.fr/hal-02131788 Journal of Volcanology and Geothermal Research, In press, ⟨10.1016/j.jvolgeores.2018.08.013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2018.08.013 hal-02131788 https://hal.umontpellier.fr/hal-02131788 doi:10.1016/j.jvolgeores.2018.08.013 |
op_doi |
https://doi.org/10.1016/j.jvolgeores.2018.08.013 |
container_title |
Journal of Volcanology and Geothermal Research |
container_volume |
391 |
container_start_page |
106435 |
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1766038140851585024 |