Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities
Here, supercritical geothermal systems are very high-temperature geothermal systems that are located at depths near or below the brittle–ductile transition zone in the crust where the reservoir fluid is assumed to be in the supercritical state, that is for pure water, temperature and pressure are, r...
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ftosti:oai:osti.gov:1479360 2023-07-30T04:04:23+02:00 Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities Reinsch, Thomas Dobson, Patrick Asanuma, Hiroshi Huenges, Ernst Poletto, Flavio Sanjuan, Bernard 2023-06-28 application/pdf http://www.osti.gov/servlets/purl/1479360 https://www.osti.gov/biblio/1479360 https://doi.org/10.1186/s40517-017-0075-y unknown http://www.osti.gov/servlets/purl/1479360 https://www.osti.gov/biblio/1479360 https://doi.org/10.1186/s40517-017-0075-y doi:10.1186/s40517-017-0075-y 58 GEOSCIENCES 2023 ftosti https://doi.org/10.1186/s40517-017-0075-y 2023-07-11T09:29:42Z Here, supercritical geothermal systems are very high-temperature geothermal systems that are located at depths near or below the brittle–ductile transition zone in the crust where the reservoir fluid is assumed to be in the supercritical state, that is for pure water, temperature and pressure are, respectively, in excess of 374 °C and 221 bar. These systems have garnered attention in recent years as a possible type of unconventional geothermal resource due to their very high enthalpy fluids. Supercritical conditions are often found at the roots of volcanic-hosted hydrothermal systems. More than 25 deep wells drilled in geothermal fields such as The Geysers, Salton Sea, and on Hawaii (USA), Kakkonda (Japan), Larderello (Italy), Krafla (Iceland), Los Humeros (Mexico), and Menengai (Kenya) have encountered temperatures in excess of 374 °C, and in some cases have encountered magma. Although fluid entries were documented for some of these wells, it remains an open question if permeability can be maintained at high enthalpy conditions. The IDDP-1 well at Krafla encountered magma, and ended up producing very high enthalpy fluids; however, these fluids were very corrosive and abrasive. Innovative drilling and well completion techniques are therefore needed to deal with the extreme temperatures and aggressive fluid chemistry compositions of these systems. New efforts are underway in Japan (northern Honshu), Italy (Larderello), Iceland (Reykjanes peninsula and Krafla), Mexico (Los Humeros), USA (Newberry), and New Zealand (Taupo Volcanic Zone) to investigate supercritical systems. Here, we review past studies, describe current research efforts, and outline the challenges and potential opportunities that these systems provide for international collaboration to ultimately utilize supercritical geothermal systems as a geothermal energy resource. Other/Unknown Material Iceland SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) New Zealand Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Krafla ENVELOPE(-16.747,-16.747,65.713,65.713) Geothermal Energy 5 1 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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ftosti |
language |
unknown |
topic |
58 GEOSCIENCES |
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58 GEOSCIENCES Reinsch, Thomas Dobson, Patrick Asanuma, Hiroshi Huenges, Ernst Poletto, Flavio Sanjuan, Bernard Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities |
topic_facet |
58 GEOSCIENCES |
description |
Here, supercritical geothermal systems are very high-temperature geothermal systems that are located at depths near or below the brittle–ductile transition zone in the crust where the reservoir fluid is assumed to be in the supercritical state, that is for pure water, temperature and pressure are, respectively, in excess of 374 °C and 221 bar. These systems have garnered attention in recent years as a possible type of unconventional geothermal resource due to their very high enthalpy fluids. Supercritical conditions are often found at the roots of volcanic-hosted hydrothermal systems. More than 25 deep wells drilled in geothermal fields such as The Geysers, Salton Sea, and on Hawaii (USA), Kakkonda (Japan), Larderello (Italy), Krafla (Iceland), Los Humeros (Mexico), and Menengai (Kenya) have encountered temperatures in excess of 374 °C, and in some cases have encountered magma. Although fluid entries were documented for some of these wells, it remains an open question if permeability can be maintained at high enthalpy conditions. The IDDP-1 well at Krafla encountered magma, and ended up producing very high enthalpy fluids; however, these fluids were very corrosive and abrasive. Innovative drilling and well completion techniques are therefore needed to deal with the extreme temperatures and aggressive fluid chemistry compositions of these systems. New efforts are underway in Japan (northern Honshu), Italy (Larderello), Iceland (Reykjanes peninsula and Krafla), Mexico (Los Humeros), USA (Newberry), and New Zealand (Taupo Volcanic Zone) to investigate supercritical systems. Here, we review past studies, describe current research efforts, and outline the challenges and potential opportunities that these systems provide for international collaboration to ultimately utilize supercritical geothermal systems as a geothermal energy resource. |
author |
Reinsch, Thomas Dobson, Patrick Asanuma, Hiroshi Huenges, Ernst Poletto, Flavio Sanjuan, Bernard |
author_facet |
Reinsch, Thomas Dobson, Patrick Asanuma, Hiroshi Huenges, Ernst Poletto, Flavio Sanjuan, Bernard |
author_sort |
Reinsch, Thomas |
title |
Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities |
title_short |
Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities |
title_full |
Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities |
title_fullStr |
Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities |
title_full_unstemmed |
Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities |
title_sort |
utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1479360 https://www.osti.gov/biblio/1479360 https://doi.org/10.1186/s40517-017-0075-y |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) ENVELOPE(-16.747,-16.747,65.713,65.713) |
geographic |
New Zealand Reykjanes Krafla |
geographic_facet |
New Zealand Reykjanes Krafla |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://www.osti.gov/servlets/purl/1479360 https://www.osti.gov/biblio/1479360 https://doi.org/10.1186/s40517-017-0075-y doi:10.1186/s40517-017-0075-y |
op_doi |
https://doi.org/10.1186/s40517-017-0075-y |
container_title |
Geothermal Energy |
container_volume |
5 |
container_issue |
1 |
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1772815781675925504 |