Seismoelectric effects for geothermal resources assessment and monitoring
| Autor: | Mathieu Auxiètre, Bjarte Fagerås, Eric Matzel, Daniel Brito, Julien Diaz, Hélène Barucq, Mathieu Bellanger, Walter Wheeler, Kirsti Midttømme, Niels Grobbe, Clarisse Bordes, C. Morency |
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| Přispěvatelé: | Lawrence Livermore National Laboratory (LLNL), University of Hawai‘i [Mānoa] (UHM), Laboratoire des Fluides Complexes et leurs Réservoirs (LFCR), TOTAL FINA ELF-Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS), TLS-Geothermics, NORCE Norwegian Research Center, Modélisation et simulation de la propagation des ondes fondées sur des mesures expérimentales pour caractériser des milieux géophysiques et héliophysiques et concevoir des objets complexes (MAKUTU), Laboratoire de Mathématiques et de leurs Applications [Pau] (LMAP), Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS)-Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS)-Inria Bordeaux - Sud-Ouest, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut Polytechnique de Bordeaux (Bordeaux INP), OCTIO Environmental Monitoring, This project has been subsidized through the Cofund GEOTHERMICA by the U.S. Department of Energy(DOE), Office of Energy Efficiency and Renewable Energy, under Contract DE-AC52-07NA27344 with Lawrence Livermore National Laboratory, by the French Environment and Energy Management Agency (ADEME), and by the Research Council of Norway.LLNL-PROC-82105 |
| Rok vydání: | 2021 |
| Předmět: |
Geothermal power
010504 meteorology & atmospheric sciences Petroleum engineering Computer science Geophysical imaging Scale (chemistry) [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Context (language use) 010502 geochemistry & geophysics 01 natural sciences Field (computer science) Fracture (geology) Sensitivity (control systems) Geothermal gradient 0105 earth and related environmental sciences |
| Zdroj: | IMAGE 2021-Society of Exploration Geophysicists Annual Meeting and Exposition IMAGE 2021-Society of Exploration Geophysicists Annual Meeting and Exposition, Sep 2021, Denver, United States |
| DOI: | 10.1190/segam2021-3587371.1 |
| Popis: | International audience; In the context of geothermal power plant operations, large amount of fluid is injected and circulates through the subsurface. Being able to identify pre-existing water-filled fracture networks (reservoir scale) can greatly help to (1) image and assess geothermal resources and targets, and (2) inform on and monitor stimulation successes and risk mitigation, by mapping newly activated fracture networks. Traditional seismic imaging techniques fail to resolve fluidphase properties, while purely electromagnetic approaches typically provide limited, low-resolution constraints on the rock structure. Our goal is to assess the use of seismoelectric effects (SEE), which arise from seismic-to-electromagnetic conversion in naturally charged porous media with a certain degree of fluid saturation. The key here is that, by leveraging the depth sensitivity of seismic signals, in combination with the fluid sensitivity of electromagnetic techniques, we can identify coupled seismic-EM pore-level phenomena and gain the advantages of both. In this contribution, we demonstrate the numerical implementation of SEE and highlight the existence of three type of signals. We also introduce in progress efforts of practical use of SEE for geothermal monitoring through laboratory experiments and field surveys. |
| Databáze: | OpenAIRE |
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