Preliminary geological results of recent exploratory drillings in a geothermal fractured reservoir at Lamentin (French West Indies, Martinique)

Albert Genter (1) , Hervé Traineau (2) , Michel Degouy (2) , Herlander Correia (2) , Antoine Mas (3) , Patricia Patrier Mas (3) , Jean-Yves Roig (4) , Bernard Sanjuan (4)

1 GEIE Exploitation Minière de la Chaleur
2 CFG - Compagnie Française de Géothermie
3 HydrASA - Hydrogéologie, argiles, sols et altérations - FRE3114
4 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)

A new geothermal exploration survey has been conducted in 2001 within the Lamentin Plain near Fort de France (Martinique, French West Indies. Three vertical wells, which were drilled to 1-km depth, penetrated volcanic and volcano-clastic formations. An exhaustive geological study was carried out on core in order to identify the fracture network in the basement. During the drilling operations, temperature data were also acquired on site. The compilation of the geological and geothermal data collected within these 3 new deep exploration wells shows the superimposition of several hydrothermal events that could explained the present-day geothermal system of the Lamentin in Martinique.

Domaines: Géochimie; Milieux et Changements globaux

Albert Genter, Hervé Traineau, Michel Degouy, Herlander Correia, Antoine Mas, et al.. Preliminary geological results of recent exploratory drillings in a geothermal fractured reservoir at Lamentin (French West Indies, Martinique). Twenty-Seventh Workshop on Geothermal Reservoir Engineering, Jan 2002, Stanford, United States. 8 p. ⟨hal-00768759⟩