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Geothermal Energy

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Table 2 Quantitative analysis of thin sections with vug pore space

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

Sample ID

Thin section #

Vug porosity (%)

Average circularity

Average aspect ratio

Maximum aspect ratio

Average roundness

NM11 2083 B

TS1

1.2

0.41

1.99

3.94

0.56

NM11 2087.4 C

TS3

1.6

0.46

2.05

6.96

0.57

NM2 2254.7 A

TS4

9.5

0.32

2.10

3.78

0.53

NM11 2083 C

TS5

3.1

0.34

2.02

5.53

0.56

NM11 2083.34 A

TS6

0.1

0.47

1.73

2.32

0.63

NM11 2087.4 D

TS7

0.4

0.37

1.89

3.24

0.60

NM11 2087.4 A

TS8

4.4

0.33

2.12

7.35

0.55

NM11 2083 A

TS10

1.6

0.37

2.45

7.89

0.49

NM11 2087.4 B

TS11

1.5

0.37

2.45

7.89

0.49

NM8a 2525.5 C

TS12

2.4

0.39

2.32

9.78

0.51

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