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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

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