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Table 4 Summary of the dry, water-saturated (wet), and brine-saturated (brine) uniaxial compressive strength experiments performed on the six sandstones sampled from exploration well EPS-1 at the Soultz-sous-Forêts geothermal site (France)

From: The influence of hydrothermal brine on the short-term strength and elastic modulus of sandstones from exploration well EPS-1 at Soultz-sous-Forêts (France)

Box number Depth (m) Unit Connected porosity Dry UCS (MPa) Wet UCS (MPa) Brine UCS (MPa) Dry elastic modulus (GPa) Wet elastic modulus (GPa) Brine elastic modulus (GPa)
84 1008 Voltzia 0.108 89.8 22.5
84 1008 Voltzia 0.111 94.2 22.7
84 1008 Voltzia 0.108 85.9 19.7
84 1008 Voltzia 0.107 152.9 30.0
84 1008 Voltzia 0.114 146.0 26.5
84 1008 Voltzia 0.111 139.7 23.7
84 1008 Voltzia 0.109 94.6 24.3
84 1008 Voltzia 0.113 94.1 25.3
84 1008 Voltzia 0.114 94.3 24.3
100 1022 Intermédiaires 0.074 123.4 29.5
100 1022 Intermédiaires 0.074 124.5 30.7
100 1022 Intermédiaires 0.076 92.3 22.1
100 1022 Intermédiaires 0.077 132.1 26.6
100 1022 Intermédiaires 0.072 147.6 28.5
100 1022 Intermédiaires 0.073 148.5 28.4
100 1022 Intermédiaires 0.079 100.4 30.1
100 1022 Intermédiaires 0.080 86.8 19.5
100 1022 Intermédiaires 0.077 86.1 21.9
100 1022 Intermédiaires 0.075 96.1 23.0
157 1069 Karlstal 0.127 74.7 25.4
157 1069 Karlstal 0.125 71.8 25.9
157 1069 Karlstal 0.133 68.2 21.5
157 1069 Karlstal 0.126 85.7 25.6
157 1069 Karlstal 0.128 102.2 29.5
157 1069 Karlstal 0.130 103.3 27.9
157 1069 Karlstal 0.130 103.7 31.0
157 1069 Karlstal 0.128 90.8 28.0
157 1069 Karlstal 0.127 90.4 28.5
157 1069 Karlstal 0.130 89.2 28.6
198 1107 Karlstal 0.098 83.8 26.5
198 1107 Karlstal 0.092 82.9 24.5
198 1107 Karlstal 0.093 93.9 27.5
198 1107 Karlstal 0.099 107.9 31.6
198 1107 Karlstal 0.095 124.3 31.1
198 1107 Karlstal 0.091 117.4 29.9
198 1107 Karlstal 0.091 98.0 29.2
198 1107 Karlstal 0.102 94.6 31.4
198 1107 Karlstal 0.090 93.7 27.3
198 1107 Karlstal 0.091 93.6 27.3
402 1290 Trifels 0.138 64.8 19.2
402 1290 Trifels 0.139 61.8 18.6
402 1290 Trifels 0.146 61.9 19.4
402 1290 Trifels 0.146 53.4 14.9
402 1290 Trifels 0.147 95.8 20.7
402 1290 Trifels 0.145 90.1 22.2
402 1290 Trifels 0.149 84.1 19.9
402 1290 Trifels 0.142 63.8 19.0
402 1290 Trifels 0.138 63.2 19.1
402 1290 Trifels 0.146 62.1 20.4
402 1290 Trifels 0.148 62.8 19.6
540 1414 Anté-Annweiler 0.096 42.0 13.9
540 1414 Anté-Annweiler 0.102 42.2 14.3
540 1414 Anté-Annweiler 0.099 38.6 12.8
540 1414 Anté-Annweiler 0.098 72.1 18.0
540 1414 Anté-Annweiler 0.106 59.4 14.9
540 1414 Anté-Annweiler 0.102 61.8 16.2
540 1414 Anté-Annweiler 0.103 38.1 12.8
540 1414 Anté-Annweiler 0.094 41.0 12.7
540 1414 Anté-Annweiler 0.099 39.2 14.2
  1. UCS uniaxial compressive strength