Tracer testing using naphthalene disulfonate compounds during the stimulation operations carried out in the wells GPK-2, GPK-3 and GPK-4 between 2003 and 2004 at Soultz-sous-Forêts (France).

Bernard Sanjuan (1) , Peter Rose (2) , André Gerard (3) , Michel Brach (1) , Gilles Braibant (1) , Jean-Claude Foucher (1) , Anne Gautier (1) , Stéphane Touzelet (1)

1 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
2 University of Utah
3 GroupeES - ESGéothermie

Between 2003 and 2004, several hydraulic stimulation operations were carried out in the wells GPK-2, GPK-3 and GPK-4 at Soultz-sous-Forêts, France. The aim of this presentation is to show the main results and conclusions obtained during the tracer tests using naphthalene disulfonate compounds (1,5-, 2,7-, 1,6- and 2,6-nds), associated with the stimulation operations. Estimations of the proportions in the discharged fluids of geothermal reservoir brine and water injected into the wells are given. The percentage of injected fluid recovered during production and the fluid circulation rate between wells are also estimated. Additional 2,6-nds will be injected into GPK-4 in 2005 and other tracer tests will also be carried out during this year.

Domaines: Géochimie; Milieux et Changements globaux

Bernard Sanjuan, Peter Rose, André Gerard, Michel Brach, Gilles Braibant, et al.. Tracer testing using naphthalene disulfonate compounds during the stimulation operations carried out in the wells GPK-2, GPK-3 and GPK-4 between 2003 and 2004 at Soultz-sous-Forêts (France).. EHDRA Scientific Conference, 2005, Soultz-sous-Forêts, France. 13 p. ⟨hal-00773144⟩