Table 3 UCS test results of NSG-rich intervals.

From: A study of the effects of early diagenesis on the geotechnical properties of carbonate sediments (North West Shelf, Australia)

Unit

BH

From (m)

To (m)

w (%)

ρd (g/cm3)

σUCS (kPa)

εa (%)

E (MPa)

e

Øt (%)

Sr (%)

Cement

Paw1

P-S

4.45

4.62

18.0

1.83

72.1

2.2

13

0.56

35.8

92.0

Sparite

Paw1

P-S

10.80

11.00

16.2

1.86

109.8

1.0

16

0.53

34.7

86.7

Sparite

Paw1

P-S

13.40

13.51

17.3

1.85

125.2

1.2

13

0.54

35.1

91.2

Sparite

Paw1

P-S

17.00

17.20

19.2

1.81

53.5

0.7

29

0.59

36.9

94.1

Sparite

Paw1

P-S

19.00

19.30

19.3

1.85

139.0

1.7

11

0.55

35.5

100.0

Sparite

Paw 1

P-S

23.90

24.02

15.0

1.90

99.9

0.7

19

0.50

33.3

85.5

Sparite

Paw1

P-N

0.15

1.00

21.1

1.76

428.7

0.9

71

0.63

38.5

96.6

Sparite

Paw1

P-N

6.32

6.48

21.6

1.79

247.1

2.3

14

0.59

37.2

104

Sparite

Paw1

P-N

14.40

14.60

20.8

1.77

308.2

1.1

46

0.61

37.9

97.2

Sparite

Paw1

P-N

22.2

22.35

16.4

1.91

162.4

1.1

23

0.50

33.2

94.3

Sparite

Paw1

P-N

25

25.17

19

1.81

373.9

1.5

47

0.547

35.4

97.2

Sparite

Paw1

P-E

3.46

3.63

19.3

1.76

116.5

2.2

12

0.62

38.2

88.8

Sparite

Paw1

P-E

6.70

6.87

20.8

1.75

882.5

1.2

126

0.63

38.6

94.3

Sparite

Paw1

P-E

10.00

10.25

18.9

1.71

718.3

0.9

128

0.67

40.0

80.8

Sparite

Paw1

P-E

14.50

14.70

15.9

1.91

583.1

0.9

99

0.49

33.0

92.1

Sparite

Paw1

P-E

17.80

17.98

11.5

1.97

1541.9

1.1

316

0.45

30.9

73.4

Sparite

Paw1

P-E

23.20

23.32

12.8

1.88

91.9

0.5

17

0.50

33.3

72.2

Sparite

Paw1

P-W

12.10

12.30

18.1

1.83

94.1

1.1

11

0.57

36.2

91.4

Sparite

Paw1

P-W

21.40

21.56

16.7

1.83

63.4

1.8

5

0.53

34.6

88.2

Sparite

Paw1

P-W

22.80

22.92

17.4

1.86

121.1

1.2

15

0.51

33.6

96.4

Sparite

Average

17.8

1.83

316.6

1.25

51.6

0.56

35.6

90.7

–

Paw2

P-W

54.20

54.37

21.2

1.75

2839.4

0.9

562

0.62

38.4

96.7

Sparite

Paw2

P-W

59.20

59.34

21.2

1.71

748.1

2.0

66

0.65

39.6

91.6

Sparite

Paw2

P-W

63.50

63.66

21.1

1.72

1306.4

1.6

153

0.65

39.2

92.5

Sparite

Paw2

P-W

69.30

69.41

28.0

1.53

275.0

0.6

64

0.86

46.1

92.9

Sparite

Average

22.9

1.68

1292.2

1.3

211

0.70

40.8

93.4

–

Freycinet

BH01

36.80

37.01

34.5

1.41

632.0

0.64

226

0.96

48.9

99.5

MCC

Freycinet

BH01

30.8

31.03

35.6

1.12

95.6

–

–

1.46

59.4

67.1

MCC

Freycinet

BH04

32.9

33.07

18.7

1.78

4473.0

0.7

1071

0.58

36.7

90.8

MCC

Freycinet

BH04

35.1

35.36

21.4

1.66

2144.0

0.2

2000

0.69

40.9

86.8

MCC

Freycinet

BH03

33.7

33.86

26.8

1.52

1524.0

0.2

889

0.86

46.3

88.0

MCC

Freycinet

BH03

36.2

36.37

24.0

1.61

1869.0

0.3

1000

0.76

43.1

89.6

MCC

Average

26.8

1.52

1789.6

0.4

1037

0.89

45.9

87.0

–

BB

BB4

1.60

1.73

4.9

1.79

2640.0

0.4

723

0.57

36.3

24.2

Sparite

BB

BB5

2.90

3.04

–

1.7*

8723.0

–

–

0.6*

37.5*

–

Sparite

EMB

EMB3

2.10

2.24

3.9

1.65

8250.0

1.3

783

0.67

40.0

16.1

Sparite

EMB

EMB4

1.10

1.23

4.3

1.59

3940.0

0.7

758

0.76

43.2

15.8

Sparite

Average

4.37

1.68

5888.0

0.8

755

0.65

39.25

18.7

–

DeGrey

DG16

0.00

0.10

8.1

1.82

1814.0

0.2

645

0.54

35.2

41.8

Sparite

  1. w water content, ρd dry density, σUCS peak stress, εa axial strain at peak stress, E Young’s modulus, e void ratio, Øt total porosity, Sr degree of saturation, MCC microcrystalline calcite. Note that the void ratio, total porosity and degree of saturation were calculated using the specific gravity from the closest classification test, within the same unit; *value derived from a visual estimate of the void ratio.
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