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Table 5 Summary of the average 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)

Sample box number

Average dry UCS (MPa)

Average wet UCS (MPa)

Average brine UCS (MPa)

Average dry elastic modulus (GPa)

Average wet elastic modulus (GPa)

Average brine elastic modulus (GPa)

84

146.2

90.0

94.3

26.9

21.6

24.6

100

142.7

106.8

94.2

27.8

25.5

25.0

157

103.1

75.1

90.1

29.5

24.6

28.4

198

116.5

88.8

95.1

30.9

27.5

27.9

402

90.0

60.5

63.0

20.9

18.0

19.5

540

64.4

40.9

39.4

16.4

13.7

13.2

  1. UCS uniaxial compressive strength