scholarly journals Hydro-Thermal Modeling for Geothermal Energy Extraction from Soultz-Sous-forêts, France

2021 ◽  
Author(s):  
Saeed Mahmoodpour ◽  
Mrityunjay Singh ◽  
Aysegul Turan ◽  
Kristian Bär ◽  
Ingo Sass
Keyword(s):  
Production Rate ◽  
Geothermal Energy ◽  
Fluid Injection ◽  
Upper Rhine Graben ◽  
Flow Rates ◽  
Industrial Project ◽  
Thermal Breakthrough ◽  
Lower Temperature ◽  
Upper Rhine ◽  
Lower Production

The deep geothermal industrial project at Soultz-sous-Forêts is located in the Upper Rhine Graben, France. As part of the MEET project, this study aims to evaluate the possibility of extracting higher amounts of energy from the existing industrial infrastructure. To achieve this objective, the effect of reinjecting fluid at lower temperature than the current fluid injection temperature of 70 ℃ was modelled and the drop in the production wellhead temperature for 100 years of operation was quantified. Two injection-production rate scenarios were considered and compared for their effect on overall production wellhead temperature. For each scenario, reinjection temperatures of 40 ℃, 50 ℃ and 60 ℃ were chosen and compared with the 70 ℃ injection case. For the lower production rate scenario, the results show that the production wellhead temperature is approximately 1-1.5 ℃ higher than for the higher production rate scenario after 100 years of operation. In conclusion, no significant thermal breakthrough has been observed with the applied flow rates and lowered injection temperatures even after 100 years of operation.

scholarly journals Hydro-Thermal Modeling for Geothermal Energy Extraction from Soultz-sous-Forêts, France

Geosciences ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 464
Author(s):  
Saeed Mahmoodpour ◽  
Mrityunjay Singh ◽  
Aysegul Turan ◽  
Kristian Bär ◽  
Ingo Sass
Keyword(s):  
Production Rate ◽  
Geothermal Energy ◽  
Upper Rhine Graben ◽  
Exploration And Exploitation ◽  
Flow Rates ◽  
Thermal Breakthrough ◽  
Deep Geothermal Energy ◽  
Lower Temperature ◽  
Upper Rhine ◽  
Lower Production

The deep geothermal energy project at Soultz-sous-Forêts is located in the Upper Rhine Graben, France. As part of the Multidisciplinary and multi-contact demonstration of EGS exploration and Exploitation Techniques and potentials (MEET) project, this study aimed to evaluate the possibility of extracting higher amounts of energy from the existing industrial infrastructure. To achieve this objective, the effect of reinjecting fluid at lower temperature than the current fluid injection temperature of 70 °C was modeled and the drop in the production wellhead temperature for 100 years of operation was quantified. Two injection-production rate scenarios were considered and compared for their effect on overall production wellhead temperature. For each scenario, reinjection temperatures of 40, 50, and 60 °C were chosen and compared with the 70 °C injection case. For the lower production rate scenario, the results show that the production wellhead temperature is approximately 1–1.5 °C higher than for the higher production rate scenario after 100 years of operation. In conclusion, no significant thermal breakthrough was observed with the applied flow rates and lowered injection temperatures even after 100 years of operation.

scholarly journals Scaling in a Geothermal Heat Exchanger at Soultz-Sous-Forêts (Upper Rhine Graben, France): A XRD and SEM-EDS Characterization of Sulfide Precipitates

Geosciences ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 271
Author(s):  
Béatrice A. Ledésert ◽  
Ronan L. Hébert ◽  
Justine Mouchot ◽  
Clio Bosia ◽  
Guillaume Ravier ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Energy Production ◽  
Electricity Production ◽  
Normal Operation ◽  
Upper Rhine Graben ◽  
Geothermal Heat ◽  
Deep Wells ◽  
Upper Rhine ◽  
Management Issues

The Soultz-Sous-Forêts geothermal site (France) operates three deep wells for electricity production. During operation, scales precipitate within the surface installation as (Ba, Sr) sulfate and (Pb, As, Sb) sulfide types. Scales have an impact on lowering energy production and inducing specific waste management issues. Thus scaling needs to be reduced for which a thorough characterization of the scales has to be performed. The geothermal brine is produced at 160 °C and reinjected at 70 °C during normal operation. In the frame of the H2020 MEET project, a small heat exchanger was tested in order to allow higher energy production, by reinjecting the geothermal fluid at 40 °C. Samples of scales were analyzed by XRD and SEM-EDS, highlighting that mostly galena precipitates and shows various crystal shapes. These shapes can be related to the turbulence of the flow and the speed of crystal growth. Where the flow is turbulent (entrance, water box, exit), crystals grow quickly and mainly show dendritic shape. In the tubes, where the flow is laminar, crystals grow more slowly and some of them are characterized by well-developed faces leading to cubes and derived shapes. The major consequence of the temperature decrease is the increased scaling phenomenon.

scholarly journals Estimation of small surface displacements in the Upper Rhine Graben area from a combined analysis of PS-InSAR, levelling and GNSS data

2015 ◽  
Vol 203 (1) ◽  
pp. 614-631 ◽  
Author(s):  
T. Fuhrmann ◽  
M. Caro Cuenca ◽  
A. Knöpfler ◽  
F.J. van Leijen ◽  
M. Mayer ◽  
...  
Keyword(s):  
Upper Rhine Graben ◽  
Small Surface ◽  
Combined Analysis ◽  
Rhine Graben ◽  
Surface Displacements ◽  
Gnss Data ◽  
Upper Rhine

A late Burdigalian gobiid fish,Gobius brevis (Agassiz, 1839), in the Upper Hydrobia Beds in the middle Upper Rhine Graben (W-Germany)

PalZ ◽  
2007 ◽  
Vol 81 (4) ◽  
pp. 365-375 ◽  
Author(s):  
Bettina Reichenbacher München ◽  
Jean Gaudant Paris ◽  
Thomas W. Griessemer
Keyword(s):  
Upper Rhine Graben ◽  
Gobiid Fish ◽  
Rhine Graben ◽  
Upper Rhine

scholarly journals Pleistocene molluscs from research boreholes in the Heidelberg Basin

2009 ◽  
Vol 57 (3/4) ◽  
pp. 382-402 ◽  
Author(s):  
Joachim Wedel
Keyword(s):  
Rodent Species ◽  
Upper Rhine Graben ◽  
Rhine Graben ◽  
Lower Pleistocene ◽  
Mollusc Species ◽  
First Time ◽  
Upper Rhine

Abstract. Cores cut in the research boreholes at Viernheim and Parkinsel P34 and P35 in Ludwigshafen were analysed to investigate their fossil content, and particularly the remains of molluscs. The selected material was suitable for reconstructing the palaeoclimatic conditions and simplifies the chronostratigraphic classification of individual beds. Two mollusc species and one rodent species from the Lower Pleistocene (Lower Biharium) were identified in the northern Upper Rhine Graben for the first time (in the Viernheim borehole). The fossils from the Lower Pleistocene sections of the Viernheim borehole are clearly related to the Uhlenberg fauna from Bavarian Swabia dated as Upper Villanium/Tegelen.

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