Table 1 The TOC, porosity and mineralogical composition of shale samples.

From: Comprehensive analysis of reservoir comparison and controls on pore structure in the Wufeng-Longmaxi shale, Southern Sichuan

Sample ID

TOC (%)

Porosity (%)

Mineral composition (%)

Quartz

Feldspar

Calcite

Dolomite

Pyrite

Clay

H-1

2.35

2.68

43.7

6.0

9.3

6.7

2.7

31.6

H-2

4.07

4.06

56.7

3.1

1.2

3.2

6.4

29.4

H-3

4.16

2.94

66.7

2.2

7.7

6.9

3.0

13.5

H-4

2.38

2.41

37.8

3.8

0.0

17.0

3.2

38.2

L-1

2.33

3.29

24.7

11.6

10.7

6.0

10.1

35.8

L-2

3.56

3.88

78.9

3.4

1.4

2.1

2.4

11.8

L-3

4.41

4.28

58.6

4.4

6.5

8.7

3.4

18.4

L-4

4.07

5.29

56.2

4.3

13.2

3.4

4.0

18.9

L-5

0.18

3.34

28.5

3.6

29.4

2.7

1.1

34.7

N-1

2.50

4.77

36.6

9.3

10.9

0.0

2.0

41.2

N-2

4.25

6.77

51.1

5.7

16.3

0.0

4.3

22.6

N-3

3.61

4.58

69.8

2.9

10.9

2.9

2.0

11.5

N-4

4.93

6.94

55.5

4.5

15.1

8.8

3.4

12.7

N-5

2.62

4.34

33.8

3.7

24.9

10.7

1.3

25.6

Y-1

1.90

3.27

28.1

4.2

14.9

14.2

3.8

34.8

Y-2

2.37

3.13

38.0

2.9

17.1

8.2

5.2

28.6

Y-3

2.76

4.28

35.7

3.7

17.3

12.3

4.1

26.9

Y-4

4.20

4.51

36.2

5.0

14.4

13.2

5.0

26.2

Y-5

2.30

2.96

28.3

1.1

29.7

11.0

2.7

27.2

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