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

Production technology

Line-shaft pump

Thermal energy produced (MWth)

27.50

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 MW_th of thermal needs. The geothermal heat plant, with an installed capacity of 24 MW_th, 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

General documentation and bibliography

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

Power generation unit

Shell-and-tube heat exchanger

Fluid cooling system

Not applicable

Source of information

ESG and BRGM

Country

France

Gas control system

NGC injection

Location

Rittershoffen, Bas-Rhin, Grand Est

Exploitation starting date

2016

Current status of the operation

In operation

Use

Heat production without heat pump

User

Industrial

Type of exploitation

Doublet

Geographic coordinate system and map projection

WGS 84

X coordinate

48.89

Y coordinate

7.93

Site operator

ECOGI

Language used for documentation

English

French

Privacy

Public

Information filling date

Mon 04/11/2019 - 12:00

Environment impact assessments files

Etude d'Impact Rittershoffen summary.pdf

Etude d'Impact Rittershoffen.pdf

Bibliography on LCA

Baujard, C., Genter, A., Graff, J.-J., Maurer, V. & Dalmais, E. ECOGI, a New Deep EGS Project in Alsace, Rhine Graben, France. World Geotherm. Congr. 2015 6 (2015).

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

Geological setting

Rhine Rift (FR, D, CH)

Geological plays

Extensional Domain

Heat source

Crustal thinning , elevated heatflow and recent extension

Storage unit

Low matrix porosity and permeability, high fractured permeability

Geological control

Fracture control

Geological period

Triassic-Paleozoic