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Industrial and applied R&D results in deep geothermal
projects from Alsace, France
GeoEnergi 2019 Bergen, Norway
04th February 2019 Albert Genter
Soultz core
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Geothermal rush in Western Europe
Vidal & Genter, Geothermics 2018
Électricité de Strasbourg Other competitor Électricité de Strasbourg
4 Illkirch rig
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Large fractured reservoir
Magnenet et al., 2014
Fault core:
H=1-30m
Damaged zone:
H=1 -100m
Granite
Sediments
Transition zone:
H=150m
Geothermal fluid
Vidal et Genter, 2018
BRGM, 2018
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Sediments
Granite
GPK2
GPK1 GPK4
GPK3
Pump
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Maurer et al., 2018
Genter et al., 2010
Temperature measured at
shallow depth (<200m) and
extrapolated to the top of the
convection cell (Trias sediments)
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Rittershoffen Plant
Soultz Plant
Exclusive Permit zone
10 to 20 plants
Development Zone
(interference test
between Soultz &
Rittershoffen)
3D Seismic Zone
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Richard et al., 2019
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2D seismic survey Aeromagnetic survey Gravimetric survey
5000 km
Altitude 300 m
Edel et al., 2018
Vibro-seismic trucks
37 km
PSDM processing
Gravimeter
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3D model of the local fault Borehole trajectories
Two geothermal deviated wells, 3300 m MD
Geothermal water @ 150°C
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1 500
1 700
1 900
2 100
2 300
2 500
2 700
150 155 160 165 170 175 180
De
pth
TV
D [
m]
Temperature [°C]
GRT-1 Temperature profile
GRT-2 Temperature profile
Top Basement
Top Buntsandstein
Top Muschelkalk
GRT-1 main flow zone(major fault zone)
GRT-2 main flow zone(assumed)
Casing shoe GRT-1Casing shoe GRT-2
Depths are expressed in TVD
Baujard et al 2017 Geothermics
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Glaas et al, 2018
• Soultz binary plant
• Fractured granite
• Brines, ~100g/L, NaCaCl
• Lithium 160mg/L
• 1.7MWe for electricity production
• Three wells @ 5000 m
• Q>30L/s T>150°C
• Rittershoffen heat plant
• Fractured granite
• Brines, ~100g/L, NaCaCl
• Lithium 180mg/L
• 24MWth for a heat application
• Two wells @ 2 500m
Q>70L/s T>168°C
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°
°
Mouchot et al, 2018
Tertiary
Jurassic
Sediments
(clays, marls)
Marls Keuper
Sandstones
Buntsandstein
Granite
Basement
Limestones
Muschelkalk
Improvement by a factor 4 the initial productivity
Naturally fractured reservoir
Baujard et al 2017 Geothermics
Critical threshold (Ml 1.7) never reached
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Maurer et al. 2015, WGC2015
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The presented results received cofundings from the European Union’s Horizon 2020 research and innovation program under grant agreement No 691728 (Destress) and No. 792037 (MEET)