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Table 5 Effective lithostatic stress (confining pressure) for each sample with the corresponding permeability test pressure used to calculate the in-situ permeability

From: Matrix permeability of reservoir rocks, Ngatamariki geothermal field, Taupo Volcanic Zone, New Zealand

Sample ID

Effective lithostatic stress (MPa)

Tested confining stress (MPa)

In-situ permeability (m2)

NM2 1788 A

18

15

2.70E−17

NM2 1354.2 A

12

15

4.94E−17

NM2 1354.2 B

12

15

2.29E−17

NM2 1354.4 A

12

15

2.04E−17

NM2 2254.7

24

25

1.76E−18

NM3 1743 A

17

15

8.62E−19

NM3 1743 C

17

15

8.62E−19

NM4 1477.2 A

15

15

6.76E−19

NM8a 2525.5 C

28

25

5.80E−18

NM8a 3280 C

34

35

3.63E−19

NM8a 3284.7 C

35

35

8.74E−19

NM11 2083 A

21

25

1.60E−16

NM11 2083 B

21

25

1.55E−16

NM11 2083 C

21

25

1.49E−16

NM11 2083.34 A

21

25

2.43E−16

NM11 2083.34 B

21

25

2.26E−16

NM11 2087.4 A

21

25

1.29E−16

NM11 2087.4 B

21

25

1.92E−16

NM11 2087.4 C

21

25

1.85E−16

NM11 2087.4 D

21

25

1.48E−16

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