Isotopes & Geochemistry: Tools For Geothermal Reservoir Characterization (Kamchatka Examples)

• Published in: E3S Web of Conferences
• Main Authors: Kiryukhin Alexey, Voronin Pavel, Zhuravlev Nikita, Polyakov Andrey, Rychkova Tatiana, Lavrushin Vasily, Kartasheva Elena, Asaulova Natalia, Vorozheikina Larisa, Chernev Ivan
• Format: Article in Journal/Newspaper
• Language: English; French
• Published: EDP Sciences 2019
• Subjects: geo; envir; Kamchatka
• Online Access: https://doi.org/10.1051/e3sconf/20199808013; https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/24/e3sconf_wri-162018_08013.pdf; https://doaj.org/article/d453279c219f4440a5ce9487f1c8e6c5

The thermal, hydrogeological, and chemical processes affecting Kamchatka geothermal reservoirs were studied by using isotope and geochemistry data: (1) The Geysers Valley hydrothermal reservoirs; (2) The Paratunsky low temperature reservoirs; (3) The North-Koryaksky hydrothermal system; (4) The Mutnovsky high temperature geothermal reservoir; (5) The Pauzhetsky geothermal reservoir. In most cases water isotope in combination with Cl- transient data are found to be useful tool to estimate reservoirs natural and disturbed by exploitation recharge conditions, isotopes of carbon-13 (in CO2) data are pointed either active magmatic recharge took place, while SiO2 and Na-K geothermometers shows opposite time transient trends (Paratunsky, Geysers Valley) suggest that it is necessary to use more complicated geochemical systems of water/mineral equilibria.