Skip to main content

Science – Society – Technology

Geothermal Energy Cover Image

Table 3 Summary of the laboratory thermal property data (thermal conductivity, thermal diffusivity, and specific heat capacity per unit volume) for samples from the Muschelkalk and Buntsandstein sampled from exploration well EPS-1 (Soultz-sous-Forêts)

From: Petrophysical properties of the Muschelkalk from the Soultz-sous-Forêts geothermal site (France), an important lithostratigraphic unit for geothermal exploitation in the Upper Rhine Graben

Lithostratigraphic unit Formation Measured depth (m) Box number Average connected porosity (-) Thermal conductivity (W/mK) Thermal diffusivity (mm2/s) Specific heat capacity per unit volume (MJ/m3K)
Middle Muschelkalk Marnes Bariolées 938.5 6 0.10 3.159 1.423 2.221
Middle Muschelkalk Marnes Bariolées 953.5 19 0.01 5.720 2.462 2.334
Middle Muschelkalk Marnes Bariolées 957 22 0.01 4.932 2.032 2.433
Lower Muschelkalk Couches à Orbicularis and Schaumkalk complex 967 32 0.06 2.421 1.186 2.041
Lower Muschelkalk Couches à Orbicularis and Schaumkalk complex 369.5 36 0.03 3.637 1.581 2.304
Lower Muschelkalk Calcaires Ondulés 975 45 0.04 3.368 1.431 2.355
Lower Muschelkalk Wellenmergel and Couches à Térébratules 982 52 0.04 2.825 1.379 2.058
Lower Muschelkalk Wellenmergel and Couches à Térébratules 983 53 0.02 3.557 1.578 2.255
Lower Muschelkalk Wellenmergel and Couches à Térébratules 988 59 0.04 3.771 1.825 2.069
Lower Muschelkalk Wellenmergel and Couches à Térébratules 990 61 0.04 3.214 1.305 2.464
Lower Muschelkalk Couches à Myacites 992 64 0.02 3.259 1.511 2.156
Lower Muschelkalk Couches à Myacites 993.5 66 0.04 2.522 1.317 1.927
Lower Muschelkalk Grès Coquillier 996.5 70 0.04 3.020 1.386 2.183
Lower Muschelkalk Grès Coquillier 999 73 0.04 2.629 1.550 1.720
Buntsandstein Grès à Voltzia 1001 76 0.03 3.636 2.006 1.818
Buntsandstein Grès à Voltzia 1005.5 81 0.10 3.199 1.970 1.628
Buntsandstein Grès à Voltzia 1006.5 82 0.04 2.614 1.510 1.733
Buntsandstein Grès à Voltzia 1008 84 0.09 3.450 2.122 1.625
Buntsandstein Couches Intermédiaires 1022 100 0.06 3.611 2.094 1.727
Buntsandstein Karlstal 1069 157 0.11 3.813 2.592 1.475
Buntsandstein Karlstal 1107 198 0.09 3.830 2.327 1.654
Buntsandstein Karlstal 1151 248 0.14 3.432 2.166 1.619
Buntsandstein Rehberg 1197 299 0.12 3.320 2.069 1.619
Buntsandstein Rehberg 1239 347 0.18 2.993 1.805 1.660
Buntsandstein Trifels 1290 402 0.13 3.264 1.865 1.750
Buntsandstein Trifels 1336 453 0.18 2.597 1.786 1.455
Buntsandstein Grès d’Annweiler 1376 497 0.04 3.831 2.223 1.728
Buntsandstein Grès d’Annweiler 1386 508 0.08 3.073 1.702 1.806
Buntsandstein Grès anté-Annweiler 1414 540 0.07 2.684 1.557 1.726