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Review

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

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Osservatorio Vesuviano, INGV, 80124 Naples, Italy
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IRISS, CNR, 80134 Naples, Italy
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Programa Ingeniería Ambiental, Universidad de Medellin, 050026 Medellin, Antioquia, Colombia
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Institut National de la Recherche Scientifique, 490 Couronne St., Quebec City, QC G1K 9A9, Canada
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GeoScience Limited Unit 1Falmouth Business Park, Bickland Water Road, Falmouth TR11 4SZ, UK
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Geosciences Barcelona CSIC, 08028 Barcelona, Spain
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DEEP Earth Energy Production Corp. Box 6 Site 515 RR5, Saskatoon, SK S7K 3J8, Canada
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Helmholtz-Zentrum Potsdam—Deutsches GeoForschungsZentrum GFZ, 14473 Potsdam, Germany
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Author to whom correspondence should be addressed.
Academic Editor: Paul Christodoulides
Energies 2021, 14(11), 3306; https://doi.org/10.3390/en14113306
Received: 8 May 2021 / Revised: 31 May 2021 / Accepted: 2 June 2021 / Published: 4 June 2021
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. View Full-Text
Keywords: unconventional geothermal resources; geothermal drilling; communities; caldera; Enhanced Geothermal Systems unconventional geothermal resources; geothermal drilling; communities; caldera; Enhanced Geothermal Systems
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MDPI and ACS Style

Somma, R.; Blessent, D.; Raymond, J.; Constance, M.; Cotton, L.; Natale, G.D.; Fedele, A.; Jurado, M.J.; Marcia, K.; Miranda, M.; Troise, C.; Wiersberg, T. Review of Recent Drilling Projects in Unconventional Geothermal Resources at Campi Flegrei Caldera, Cornubian Batholith, and Williston Sedimentary Basin. Energies 2021, 14, 3306. https://doi.org/10.3390/en14113306

AMA Style

Somma R, Blessent D, Raymond J, Constance M, Cotton L, Natale GD, Fedele A, Jurado MJ, Marcia K, Miranda M, Troise C, Wiersberg T. Review of Recent Drilling Projects in Unconventional Geothermal Resources at Campi Flegrei Caldera, Cornubian Batholith, and Williston Sedimentary Basin. Energies. 2021; 14(11):3306. https://doi.org/10.3390/en14113306

Chicago/Turabian Style

Somma, Renato, Daniela Blessent, Jasmin Raymond, Madeline Constance, Lucy Cotton, Giuseppe D. Natale, Alessandro Fedele, Maria J. Jurado, Kirsten Marcia, Mafalda Miranda, Claudia Troise, and Thomas Wiersberg. 2021. "Review of Recent Drilling Projects in Unconventional Geothermal Resources at Campi Flegrei Caldera, Cornubian Batholith, and Williston Sedimentary Basin" Energies 14, no. 11: 3306. https://doi.org/10.3390/en14113306

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