A 3D geomodel of the deep aquifers in the Orléans area of the southern Paris Basin (France)

Perrine Mas (1, 2) , Philippe Calcagno (1) , Séverine Caritg (1) , Laurent Beccaletto (1) , Laure Capar (1) , Virginie Hamm (1)

1 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
2 GEOPS - Géosciences Paris Saclay

An increasing number of cities are interested in deep geothermal energy in order to increase the share of renewable energies in their district heating networks. To reduce the risks related to deep geothermal energy operations, reliable digital models are needed: they make it possible to predict the depth of aquifers away from borehole locations, and their thermal and hydrological evolution by supporting detailed water and heat flow simulations. This paper presents a 3D geomodel developed for this purpose in the southern Paris Basin of France in the Orléans area. The 3D geomodel integrates various data such as reprocessed and interpreted seismic lines, well data, and a pre-existing larger-scale and lower-resolution 3D geological model. The resulting 3D geomodel gives a new and reliable representation of the main aquifers underlying the study area. Within the framework of the project, hydrological and thermal simulations were then performed based on this 3D geomodel. Other environmental investigations (e.g. CO 2 storage) and teaching/communication activities could also benefit from the dataset.

Mots clés: Measurement(s); geological features; Technology Type(s); 3D geomodelling integration; Sample Characteristic - Location; Southern Paris Basin (France)

Domaines: Sciences de la Terre

Perrine Mas, Philippe Calcagno, Séverine Caritg, Laurent Beccaletto, Laure Capar, et al.. A 3D geomodel of the deep aquifers in the Orléans area of the southern Paris Basin (France). Scientific Data , 2022, 9 (1), pp.781. ⟨10.1038/s41597-022-01876-4⟩. ⟨hal-03949042⟩