Monitoring of the Bouillante Geothermal Exploitation (Guadeloupe, French West Indies) and the Impact on Its Immediate Environment - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2010

Monitoring of the Bouillante Geothermal Exploitation (Guadeloupe, French West Indies) and the Impact on Its Immediate Environment

(1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (2) , (2)
1
2

Résumé

The Bouillante high enthalpy geothermal field, 250-260°C, is located in the Guadeloupe volcanic Island (French West Indies). Since 2005, the new geothermal power plant has had an installed capacity of 15 MWe gross which represents about 8% of the annual electricity needs in the Island. It is supplied by 3 wells which can produce up to 120 tons/h of steam. No residual water is re-injected. Among the research efforts carried out by the BRGM group and partially funded by ADEME (French Environment and Energy Management Agency), different monitoring methods of the geothermal exploitation have been started, tested and developed in order to optimize and secure electricity production and to control its impact on the immediate environment of the power plant. This is especially important because the power plant is located inside the Bouillante town. These methods are: geochemical monitoring of the fluids collected from the geothermal wells and neighboring thermal springs in order to control the evolution of the fluid geochemistry and the Gas/Steam Ratio, surface soil thermometry monitoring, geophysical monitoring such as broadband seismology, microgravity and SAR interferometry to detect mass transfers or changes in the geothermal reservoir during its exploitation as well as vertical surface ground deformations. This paper presents the main results and conclusions obtained from these different monitoring techniques. On the whole, despite the pressure decrease observed in the geothermal reservoir due to an annual production estimated at about 4.5 millions of tons of fluid, no significant variation of the monitored parameters has been detected from these methods during four quasicontinuous years of geothermal exploitation. Most of these monitoring techniques will be continued and probably developed in the next few years, especially if the produced fluids are re-injected, in order to anticipate and/or quickly take into account problems such as issues related to chemical change of the reservoir fluid or induced microseismicity.
Fichier principal
Vignette du fichier
Monitoring-the-Bouillante-Geothermal-Exploitation.pdf (6.15 Mo) Télécharger le fichier
Origine : Accord explicite pour ce dépôt
Loading...

Dates et versions

hal-00496141 , version 1 (29-06-2010)

Identifiants

  • HAL Id : hal-00496141 , version 1

Citer

Bernard Sanjuan, Philippe Jousset, Gwendoline Pajot, Nicole Debeglia, Marcello de Michele, et al.. Monitoring of the Bouillante Geothermal Exploitation (Guadeloupe, French West Indies) and the Impact on Its Immediate Environment. World Geothermal Congress 2010, Apr 2010, Bali, Indonesia. 11 p. ⟨hal-00496141⟩

Collections

BRGM
295 Consultations
492 Téléchargements

Partager

Gmail Facebook Twitter LinkedIn More