Review of Recent Drilling Projects in Unconventional Geothermal Resources at Campi Flegrei Caldera, Cornubian Batholith, and Williston Sedimentary Basin.

Somma, Renato; Blessent, Daniela; Raymond, Jasmin ORCID: https://orcid.org/0000-0002-7486-9185; Constance, Madeline; Cotton, Lucy; Natale, Giuseppe De; Fedele, Alessandro; Jurado, Maria Jose; Marcia, Kirsten; Miranda, Mafalda M.; Troise, Claudia et Wiersberg, Thomas (2021). Review of Recent Drilling Projects in Unconventional Geothermal Resources at Campi Flegrei Caldera, Cornubian Batholith, and Williston Sedimentary Basin. Energies , vol. 14 , nº 11. p. 3306. DOI: 10.3390/en14113306.

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Résumé

Unconventional geothermal resource development can contribute to increase power generation from renewable energy sources in countries without conventional hydrothermal reservoirs, which are usually associated with magmatic activity and extensional faulting, as well as to expand the generation in those regions where conventional resources are already used. Three recent drilling experiences focused on the characterization of unconventional resources are described and compared: the Campi Flegrei Deep Drilling Project (CFDDP) in Italy, the United Downs Deep Geothermal Power (UDDGP) project in the United Kingdom, and the DEEP Earth Energy Production in Canada. The main aspects of each project are described (geology, drilling, data collection, communication strategies) and compared to discuss challenges encountered at the tree sites considered, including a scientific drilling project (CFDDP) and two industrial ones (UDDGP and DEEP). The first project, at the first stage of pilot hole, although not reaching deep supercritical targets, showed extremely high, very rare thermal gradients even at shallow depths. Although each project has its own history, as well as social and economic context, the lessons learned at each drilling site can be used to further facilitate geothermal energy development.

Type de document:	Article
Mots-clés libres:	unconventional geothermal resources; geothermal drilling; communities; caldera; Enhanced Geothermal Systems
Centre:	Centre Eau Terre Environnement
Date de dépôt:	15 juill. 2021 15:10
Dernière modification:	13 juin 2023 13:44
URI:	https://espace.inrs.ca/id/eprint/11882

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