Rittershoffen

General information about the site
Description of the geothermal plant

The heat plant of Rittershoffen has been developed in order to supply Roquette Frères Company, a bio-refinery, with geothermal heat for their industrial processes. This industrial user, located in Beinheim, France, totals 100 MWth of thermal needs. The geothermal heat plant, with an installed capacity of 24 MWth, is then providing the totality of its heat production to this company via an isolated heating transport loop of 15 km length. The geothermal brine is produced at a temperature of 170°C from a production well, GRT-2 at 2700 m depth, penetrated into Triassic sedimentary layers and the top crystalline fractured basement interface. The geothermal brine is flowing through a system of twelve consecutive tubular heat exchangers and is fully reinjected without additional pumps at 80°C into one injection well, GRT-1, at 2500 m depth. The reinjection temperature is linked to the return temperature of the transport loop. The flow rate of the brine is regulated at 70-75 kg/s by a Downhole production Line Shaft Pump. The geothermal plant has been successfully producing heat since June 2016 under commercial conditions.

Presentation of the site
Rittershoffen geothermal plant (ESG)
General documentation and bibliography

Baujard, C., Genter, A. , Dalmais, E., Maurer, V., Hehn, R., Rosillette, R., Vidal, J., Schmittbuhl, J., Hydrothermal characterization of wells GRT-1 and GRT-2 in Rittershoffen, France: Implications on the understanding of natural flow systems in the rhine graben, Geothermics, 65, 255-268 (2017), https://www.sciencedirect.com/science/article/pii/S0375650516301341

Mouchot, J., Ravier, G., Seibel, O. & Pratiwi, A. Deep Geothermal Plants Operation in Upper Rhine Graben: Lessons Learned. Eur. Geotherm. Congr. 2019, Den Haag, Netherlands, 11-14th June 2019 11–14 (2019).

Baujard, C., Genter A., Cuenot N., Mouchot J., Maurer V., Hehn R., Ravier G., Seibel O., Vidal J, Experience learnt from a successful soft stimulation and operational feedback after 2 years of geothermal power and heat production in Rittershoffen and Soultz-sous-forêts plants (Alsace, France). Trans. - Geotherm. Resour. Counc. 42, 2241–2252 (2018).

https://geothermie.es.fr/references/projet-ecogi/

http://www.afpg.asso.fr/wp-content/uploads/2016/06/Dossier-de-presse_Rittershoffen_DEF.pdf

Source of information
ESG and BRGM
Country
Location
Rittershoffen, Bas-Rhin, Grand Est
Exploitation starting date
2016
Current status of the operation
User
Type of exploitation
Geographic coordinate system and map projection
WGS 84
X coordinate
48.89
Y coordinate
7.93
Site operator
ECOGI
Language used for documentation
Privacy
Information filling date
Surface operation
Production technology
Thermal energy produced (MWth)
27.50
Power generation unit
Fluid cooling system
Gas control system
Reservoir / geothermal operations
Use of inhibitors
Y
Use of stimulation
Y
Exploitation flow rate (m3/h)
290.00
Surface discharge of geothermal fluids
N
Discharge temperature (°C)
80.00
Environmental related documents
Life cycle analysis
Document on LCA

Pratiwi, A. S., Ravier, G., Genter, A. & Le, B. Innovative Tool for Life-cycle CO 2 Emissions Calculation of Geothermal Plants in Upper Rhine Valley. GRC 31–44 (2018).

Pratiwi, A., Ravier, G. & Genter, A. Life-cycle climate-change impact assessment of enhanced geothermal system plants in the Upper Rhine Valley. Geothermics 75, 26–39 (2018). https://www.sciencedirect.com/science/article/pii/S0375650517302912

Environment impact assessments
Reservoir characteristics
Depth of top reservoir formation (m b.g.l.)
1900
Average reservoir thickness (m)
1000.00
Reservoir temperature (°C)
170.00
Reservoir pressure at datum (bars)
191.80
Reference depth for pressure (m b.g.l.)
1848.00
Productivity index (m3/h/bar)
12.50000
Injectivity index (m3/h/bar)
9.00000
Mineralisation (TDS mg/L)
100000.00
Dominant phase of the geothermal resource
Gas water ratio (val/vol)
1.10
Presence of hydrocarbons
No
Geothermal fluid composition
Na, Ca, K, Cl
Gas composition
90% CO2
Geological context
Geological setting
Geological plays
Geological control
Geological period
Lithology
Stratigraphy
Triassic-basement
Natural seismicity