Petrophysical properties in faulted basement rocks: Insights from outcropping analogues on the West European Rift shoulders - Université de Lorraine Access content directly
Journal Articles Geothermics Year : 2021

Petrophysical properties in faulted basement rocks: Insights from outcropping analogues on the West European Rift shoulders

Lionel Bertrand
  • Function : Author
Yves Géraud
Marc Diraison
  • Function : Author

Abstract

In continental extension settings like the West European Rift, the main target for high-temperature geothermal drillings is the fault zones in basement rocks of the grabens. However, the reservoir properties of these structures remain almost unknown during the predrilling resource evaluations. This study shows the petrophysical evolution in fault zones on three outcropping areas at the basins’ shoulders. We highlight three petrographical groups with different petrophysical evolution in the fault zones: granites and granodiorites, metamorphic rocks with schistosity, and massive metamorphic or magmatic facies. It provides a first estimation of their reservoir properties that can be used for dual-porosity modeling.
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Dates and versions

hal-03698426 , version 1 (02-08-2023)

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Attribution - NonCommercial

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Lionel Bertrand, Yves Géraud, Marc Diraison. Petrophysical properties in faulted basement rocks: Insights from outcropping analogues on the West European Rift shoulders. Geothermics, 2021, 95, pp.102144. ⟨10.1016/j.geothermics.2021.102144⟩. ⟨hal-03698426⟩
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