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Tectonic Regime as a Control Factor for Crustal Fault Zone (CFZ) Geothermal Reservoir in an Amagmatic System
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  • Duwiquet Hugo,
  • Fabien Magri,
  • Simon Lopez,
  • Théophile Guillon,
  • Laurent Arbaret,
  • Mathieu Bellanger,
  • Laurent Guillou-Frottier
Duwiquet Hugo
BRGM/ISTO/ TLS-Geothermics

Corresponding Author:hugo.duwiquet@gmail.com

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Fabien Magri
FU Berlin
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Simon Lopez
Bureau des Recherches Geologiques et Minieres
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Théophile Guillon
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Laurent Arbaret
University of Orléans, CNRS, BRGM UMR 7327
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Mathieu Bellanger
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Laurent Guillou-Frottier
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The Crustal Fault Zones provides an interesting geological target for high temperature geothermal energy source in naturally deep-fractured basement areas. Field and laboratory studies have already shown the ability of these systems to let fluid flow down to Brittle-Ductile-Transition. However, several key questions about exploration still exist, in particular the fundamental effect of tectonic regimes on fluid flow in fractured basement domains. Based on poroelasticity assumption, we considered an idealized 3D geometry and realistic physical properties. We examined a model with no tectonic regime (benchmark experiment) and a model with different tectonic regimes applied. Compared to the benchmark experiment, the results suggest that different tectonic regimes cause pressure changes in the fault/basement system. The tectonic-induced pressure changes affect fluid patterns, onset of convection as well as the spatial extent of thermal plumes and the intensity of the temperature anomalies.