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Volume 17
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Article

Applying Deep Electrical-Resistivity Tomography Techniques for the Exploration of Medium- and Low-Geothermal Energy Resources

by
Cristina Sáez Blázquez
*,
Ignacio Martín Nieto
,
Javier Carrasco
,
Pedro Carrasco
,
Daniel Porras
,
Miguel Ángel Maté-González
,
Arturo Farfán Martín
and
Diego González-Aguilera
Department of Cartographic and Land Engineering, Higher Polytechnic School of Avila, University of Salamanca, Hornos Caleros 50, 05003 Avila, Spain
*
Author to whom correspondence should be addressed.
Energies 2024, 17(8), 1836; https://doi.org/10.3390/en17081836
Submission received: 18 March 2024 / Revised: 4 April 2024 / Accepted: 9 April 2024 / Published: 11 April 2024
(This article belongs to the Special Issue New Advances in Low-Energy Processes for Geo-Energy Development)
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Abstract

The growth of the geothermal industry demands the constant search of techniques with the aim of reducing exploration efforts whilst minimizing subsurface uncertainty. The exploration of geothermal resources is fundamental from the exploitation point of view, especially in those regions where this energy is not as widespread as the rest of renewable sources. This research shows how geoelectrical methods can contribute to the investigation and characterization of medium–low enthalpy geothermal resources until about 800 m of depth. A 2000 m long electrical-resistivity tomography profile was performed in a region of Southern Spain with previous evidence of moderate geothermal potential. Results of this geophysical campaign (together with a preliminary geological characterization) allowed for the obtainment of a 2D profile and a pseudo-3D model with extensive information about the subsoil in terms of geological composition and formations. The interpretation of geophysical results denotes the existence of a potential formation constituted by carbonate materials with thickness greater than 300 m, crossing different fractures. Once the ideal location for the geothermal exploitation is defined, the research evaluates the contribution of the possible energy source, deducing that the energy extraction in the potential fracturing area would be double that of the one in the vicinity of the site.
Keywords: geothermal resources; exploration; electrical resistivity tomography; 2D profile; potential area geothermal resources; exploration; electrical resistivity tomography; 2D profile; potential area

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MDPI and ACS Style

Sáez Blázquez, C.; Martín Nieto, I.; Carrasco, J.; Carrasco, P.; Porras, D.; Maté-González, M.Á.; Farfán Martín, A.; González-Aguilera, D. Applying Deep Electrical-Resistivity Tomography Techniques for the Exploration of Medium- and Low-Geothermal Energy Resources. Energies 2024, 17, 1836. https://doi.org/10.3390/en17081836

AMA Style

Sáez Blázquez C, Martín Nieto I, Carrasco J, Carrasco P, Porras D, Maté-González MÁ, Farfán Martín A, González-Aguilera D. Applying Deep Electrical-Resistivity Tomography Techniques for the Exploration of Medium- and Low-Geothermal Energy Resources. Energies. 2024; 17(8):1836. https://doi.org/10.3390/en17081836

Chicago/Turabian Style

Sáez Blázquez, Cristina, Ignacio Martín Nieto, Javier Carrasco, Pedro Carrasco, Daniel Porras, Miguel Ángel Maté-González, Arturo Farfán Martín, and Diego González-Aguilera. 2024. "Applying Deep Electrical-Resistivity Tomography Techniques for the Exploration of Medium- and Low-Geothermal Energy Resources" Energies 17, no. 8: 1836. https://doi.org/10.3390/en17081836

APA Style

Sáez Blázquez, C., Martín Nieto, I., Carrasco, J., Carrasco, P., Porras, D., Maté-González, M. Á., Farfán Martín, A., & González-Aguilera, D. (2024). Applying Deep Electrical-Resistivity Tomography Techniques for the Exploration of Medium- and Low-Geothermal Energy Resources. Energies, 17(8), 1836. https://doi.org/10.3390/en17081836

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