Details of the abstract
| Title of paper |
CSEM/MT imaging for deep EGS geothermal project derisking in the Upper Rhine Graben (France) |
| List of authors |
Mathieu Darnet2, François Bretaudeau2, Pierre Wawrzyniak2,, Jean-François Girard3, Guy Marquis3, Vincent Maurer1, Albert Genter1 |
| Affiliation(s) |
1ES-Géothermie, 5 Rue de Lisbonne 67300 Schiltigheim – France. 2BRGM, 3 Avenue Claude Guillemin 45000 Orléans – France 3EOST, 5, rue René Descartes 67000 Strasbourg – France |
| Summary | In the present paper, we present a combination of 3D Controlled-Source Electromagnetics (CSEM) and Magnetotellurics (MT) adapted to image electrical resistivity of deep granitic fractured reservoirs. This method is applied in the Upper Rhine Graben (URG) to locate and describe accurately the geothermal resource in order to reduce the risk of future Enhanced Geothermal System (EGS) projects planned in this area. Electrical resistivity logs data from Soultz-sous-Forêts geothermal wells (Alsace, France) have been used to design an optimal survey, since knowledge of resistivity variation in the sedimentary cover is required to properly image deep fluid circulation. As a validation step, a large-scale 3D CSEM/MT acquisition campaign was carried out to cover 150 km2 in Northern Alsace. |
| Session Keyword | 3.0 Exploration, Monitoring and Hazards |
| File upload |
3.0_csem_mt_imaging_for_deep_darnet.pdf
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