Table T2. Permeability values and stress, strain conditions.
Core, section
Permeability (m2)
Effective confining pressure (MPa)
Effective stress (MPa)
State
Deformation
Cumulative void
ratio decrease
190-1174B-





42R-1 (v) 3.6 ± 0.1 x 10–19 0.48 0.5 Isotropic

42R-1 (v) 3.7 ± 0.3 x 10–19 0.5 0.5 Isotropic

42R-1 (v) 1.2 ± 0.2 x 10–18‡ 0.6 0.6 Isotropic

42R-1 (v) 4.5 ± 0.2 x 10–19 0.5 0.5 Isotropic
**
42R-1 (v) 4.1 ± 0.15 x 10–19‡ 1.41 0.5 Isotropic
0.013
42R-1 (v) 1.6 ± 0.1 x 10–19 1.43 1.4 Isotropic
0.013
42R-1 (v) 3.7 ± 0.3 x 10–19 1.5 1.5 Isotropic
0.015
190-1173A-





55X-5 (v)* 1.9 ± 0.6 x 10–19 0.12 0.15 Isotropic

55X-5 (v)* 1.0 ± 0.2 x 10–19 0.21 0.2 Isotropic

55X-5 (v)* 1.5 ± 0.2 x 10–18 0.21 1 Deviatoric Just fractured—0.015
55X-5 (v)* 1.3 ± 0.2 x 10–18 0.25 1.4 Deviatoric Just fractured—0.028
55X-5 (v)† 8.4 ± 0.4 x 10–19 0.22 0.35 Isotropic Previously fractured **
55X-5 (v)† 8.0 ± 0.4 x 10–19 0.56 0.55 Isotropic Previously fractured 0.023
55X-5 (v)† 6.4 ± 0.4 x 10–19 1.23 1.3 Isotropic Previously fractured 0.044
55X-5 (v)† 1.7 ± 0.1 x 10–19 1.57 1.6 Isotropic Previously fractured 0.054
55X-5 (v)† 1.4 ± 0.2 x 10–19 1.68 1.8 Isotropic Previously fractured 0.054
55X-5 (v)† 2.1 ± 0.1 x 10–19 2.41 2.2 Isotropic Previously fractured 0.072
55X-5 (v)† 1.9 ± 0.1 x 10–19 2.4 3.1 Deviatoric Previously fractured—0.0357 0.094
55X-5 (h) 7.0 ± 1.2 x 10–19 1.1 1.1 Isotropic 0.0005 0.023
55X-5 (h) 3.0 ± 1.1 x 10–19 2 2 Isotropic 0.0034 0.048
55X-5 (h) 3.9 ± 0.3 x 10–19 1.94 2 Isotropic 0.0034 0.048
55X-5 (h) 5.3 ± 0.2 x 10–19 2.41 2.4 Isotropic 0.0046 0.053
55X-5 (h) 4.0 ± 0.2 x 10–19 2.43 2.4 Isotropic 0.0051 0.062
55X-5 (h) 2.4 ± 0.3 x 10–19 2.43 (5.0 to) 2.5 Deviatoric 0.015—after rupture 0.072
55X-5 (h) 3.8 ± 0.2 x 10–19 2.37 2.4 Deviatoric 0.015—after rupture 0.072
55X-5 (h) 4.1 ± 0.3 x 10–19 2.4 4.9 Deviatoric 0.0367—after rupture 0.078

Notes: v = vertical, h = horizontal. Sample 190-1173A-55X-5, 135–150 cm (vertical), was subjected to two experiments: * = experiment 1, † = experiment 2. ‡ = steady-state flow measurements; ** = reference state for the calculation of the void ratio decrease. The cumulative void ratio for Sample 190-1173A-55X-5 (horizontal) is taken in comparison to the void ratio at 0.3 MPa effective pressure.