| Title: |
Characterizing geothermal and lithium resources in the Upper Rhine Graben (France) with active electromagnetic methods |
| Authors: |
Darnet, Mathieu |
| Contributors: |
Bureau de Recherches Géologiques et Minières (BRGM) (BRGM) |
| Source: |
GET2023 - 4th EAGE Global Energy Transition Conference & Exhibiting ; https://brgm.hal.science/hal-04209739 ; GET2023 - 4th EAGE Global Energy Transition Conference & Exhibiting, Nov 2023, Paris, France ; https://eageget.org/ |
| Publisher Information: |
HAL CCSD |
| Publication Year: |
2023 |
| Collection: |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
| Subject Terms: |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
| Subject Geographic: |
Paris; France |
| Description: |
International audience ; Exploitation of deep hydrothermal fluids for heat, electricity and lithium production relies on our knowledge and prediction capacity of hydrothermal fluid property, mainly temperature, flow rate and chemistry. Most of hydrothermal fluid properties are obtained from post-drilling phases, whereas proxy information is hard to access in an economically viable way. The main challenge is then to develop methods to access these properties at the early stage of the exploration phase. Deep fractured reservoirs are usually characterized by non-invasive geophysical methods (seismic, gravity, etc.). However, these techniques have a low sensitivity to geothermal fluids and so, do not predict accurately the geothermal resource, and more particularly reservoir permeability, before drilling operation.Due to their sensitivity to fluids and particularly brine water in rocks, electromagnetic (EM) techniques have been traditionally used to investigate the subsurface conductivity. EM methods have shown to be effective to characterize geothermal reservoir geometry in volcanic areas, hydrocarbon reservoir geometry in offshore sedimentary area or onshore mineral exploration. In this paper, we show that EM methods can also provide valuable information for de-risking targets with high geothermal and lithium potential in deep fractured reservoirs, despite the presence of a high man-made noise as typically found in Western Europe. We illustrate that with actual data acquired recently with a Controlled-Source EM survey performed over the Exploration License hold by Lithium de France and named “Les Sources” in the French side of the Upper Rhine Graben. |
| Document Type: |
conference object |
| Language: |
English |
| Relation: |
hal-04209739; https://brgm.hal.science/hal-04209739; https://brgm.hal.science/hal-04209739/document; https://brgm.hal.science/hal-04209739/file/Abstract%20-%20Darnet%20et%20al%20-%20EAGE%20GET%202023.pdf |
| Availability: |
https://brgm.hal.science/hal-04209739; https://brgm.hal.science/hal-04209739/document; https://brgm.hal.science/hal-04209739/file/Abstract%20-%20Darnet%20et%20al%20-%20EAGE%20GET%202023.pdf |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.BAAE4C19 |
| Database: |
BASE |