Contribution of SWIR to the Clay Signature of Permeable Fracture Zones in the Granitic Basement. Overview of Soultz and Rittershoffen wells
| Autor: | Glaas, Carole, Vidal, Jeanne, Patrier, Patricia, Beaufort, Daniel, Genter, Albert |
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| Přispěvatelé: | ESGéothermie (GroupeES), Groupe Electricite de Strasbourg, Institut de physique du globe de Strasbourg (IPGS), Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | European Geothermal Congress European Geothermal Congress, Jun 2019, Den Haag, Netherlands |
| Popis: | International audience; The high potential of the Upper Rhine Graben (URG) for geothermal relies on more than 30 years of expertise in crystalline geothermal reservoirs developed in Soultz (France), the near presence of direct users in the area of the Eurometropolis of Strasbourg and undeniably, the acceptance of the population and the presence of investors. Hence, Strasbourg area is very attractive and is very active in the development of deep geothermal plants. In this context, this study proposes an innovative method of geothermal exploration to detect the highly hydrothermally altered zones corresponding to permeable fracture zones (FZ). They are acting as natural pathways for the fluid in the crystalline rocks of the URG. Applied on cuttings of granite samples with reduced costs and time, the short wave infrared (SWIR) spectroscopy method was realized on geothermal wells from Northern Alsace (Soultz, Rittershoffen) for calibration. Indeed, the FZ of these wells were first characterized by structural and mineralogical studies done from borehole image logs and cuttings analysis respectively. In the Rittershoffen wells, the occurrence of small crystallites of illite and illite-smectite mixed layers minerals ( |
| Databáze: | OpenAIRE |
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