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Geothermal Energy

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Table 3 Physical property measurements of 22 samples used in destructive testing of Rotokawa Andesite

From: Physical property relationships of the Rotokawa Andesite, a significant geothermal reservoir rock in the Taupo Volcanic Zone, New Zealand

Sample source_well sample name

Bulk dry density (g/cm3)

Connected porosity (vol%)

Vp (m/s)

Vs (m/s)

Spatial attenuation (dB/cm)

UCS (MPa)

Static Young’s modulus (GPa)

Dynamic Young’s modulus (GPa)

Static Poisson’s ratio

Dynamic Poisson’s ratio

RK_27_L2_21.5B

2.44

10.72

4,005

2,443

14.63

85.99

19.9

35.1

0.24

0.2

RK_27_L2_21.8A

2.33

13.49

3,850

2,363

16.47

79.91

25.2

31.2

0.26

0.2

RK_27_L2_23.2A

2.56

6.61

4,182

2,490

22.48

105.26

31.2

38.9

0.19

0.23

RK_27_L2_20.4B

2.65

4.37

4,556

2,752

22.53

211.05

37.7

45.9

0.25

0.21

RK_27_L2_21.1C

2.37

13.1

3,877

2,405

23.6

69.53

21.5

32.5

0.18

0.19

RK_27_L2_3.3B

2.45

9.81

3,937

2,331

23.51

95.78

32.4

29.9

0.13

0.18

RK_27_L2_21.0B

2.34

14.91

3,752

2,337

8.4

60.13

28.1

30.6

0.12

0.17

RK_27_L2_21.3A

2.29

16.3

3,627

2,160

15.13

70.57

30.4

24.6

0.16

0.17

RK_28_10.6C

2.5

5.97

4,350

2,652

18.27

146.2

43.7

42.4

0.27

0.2

RK_28_10.8C

2.53

6.72

4,147

2,537

11.67

109.91

27.2

39.1

0.34

0.2

RK_28_10.9B

2.51

7.42

4,285

2,615

14.67

137.31

32.4

41.5

0.2

0.2

RK_28_13.2A

2.55

6.97

4,013

2,531

18.53

146.21

38.3

37.2

0.24

0.19

RK_28_10.5A

2.45

7.47

4,220

2,578

14.83

130.71

27.4

38.8

0.25

0.21

RK_28_11.5A

2.51

7.62

4,403

2,555

10.06

152.76

35.6

37.4

0.27

0.13

RK_28_12.1

2.49

7.89

4,010

2,460

12.23

115.01

29.3

36.2

0.22

0.14

RK_30_20.4A

2.57

5.3

4,002

2,495

10.39

140.97

33.6

36.9

0.09

0.15

RK_30_21.0A

2.55

6.84

4,070

2,508

11.17

126.53

26.4

39.8

0.14

0.15

RK_30_21.1B

2.54

7.47

4,352

2,659

28.75

157.93

25.8

43.2

0.17

0.2

RK_30_21.7B

2.56

6.28

4,154

2,588

19.91

162.71

28.3

41.1

0.22

0.18

RK_30_22.3B

2.53

7.51

4,133

2,550

21.72

137.97

31.5

39.2

0.23

0.19

RK_30_22.4A

2.56

6.49

4,181

2,582

20.27

148.44

34.4

40.7

0.18

0.19

RK_30_22.5B

2.56

6.41

4,236

2,628

23.43

150.71

33.6

42.1

0.09

0.16

Mean

2.49

8.44

4,106

2,510

17.39

124.62

30.6

37.5

0.2

0.18

Standard deviation

0.09

3.23

221

133

5.512

37.01

5.5

5.1

0.06

0.03

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