Table 2 Coal rock macerals and coal facies parameters of Benxi coal in well Q36.

From: Coal-forming sedimentary model and its control on vertical reservoir heterogeneity of the upper carboniferous Benxi formation in Ordos basin, China

Samples

Depth

(m)

Vitrinite/%

Inertinite/%

Liptinite/%

Coal facies index

 

T

C1

VD

C2

C3

C4

F

SF

MA

MI

ID

RE

GI

TPI

GWI

VI

V/I

F/M

OI

Q36-1

2803.10

5.00

14.67

40.67

18.67

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

4.67

0.33

8.21

0.13

1.48

0.60

16.93

0.31

1.97

Q36-2

2803.50

1.33

78.67

n.d.

1.67

7.33

2.33

n.d.

n.d.

n.d.

n.d.

7.67

n.d.

11.91

0.01

0.13

8.75

11.91

8.57

1.02

Q36-3

2804.60

1.33

83.33

n.d.

4.67

1.00

2.33

n.d.

0.33

n.d.

n.d.

6.00

0.33

14.63

0.02

0.04

8.44

14.63

7.94

1.06

Q36-4

2805.34

7.00

84.67

0.33

0.33

1.33

1.33

n.d.

n.d.

n.d.

n.d.

3.33

n.d.

28.40

0.08

0.05

23.00

28.50

22.92

1.00

Q36-5

2806.78

5.33

78.00

1.00

2.67

4.33

0.33

n.d.

n.d.

n.d.

n.d.

2.67

n.d.

34.00

0.06

0.13

13.58

34.38

13.16

1.03

Q36-6

2807.62

10.00

62.33

0.33

5.00

1.67

0.33

1.00

3.00

n.d.

n.d.

10.00

n.d.

5.67

0.18

0.11

5.30

5.69

4.78

1.11

Q36-7

2808.57

13.33

47.00

0.33

1.00

1.00

0.67

6.67

14.67

3.33

1.67

6.00

n.d.

2.43

0.62

0.10

11.27

1.96

6.28

1.79

Q36-8

2810.09

3.67

15.67

7.33

56.33

1.00

n.d.

n.d.

n.d.

n.d.

n.d.

8.00

n.d.

9.58

0.05

0.22

1.06

10.50

0.27

3.91

Q36-9

2811.59

26.33

7.33

0.33

13.67

2.33

0.33

6.00

5.00

3.33

1.00

8.33

n.d.

2.76

1.17

0.61

2.61

2.13

1.55

1.69

Q36-10

2811.87

6.67

21.67

n.d.

26.00

5.67

n.d.

2.67

3.67

n.d.

n.d.

8.33

n.d.

4.09

0.21

0.57

1.77

4.09

0.90

1.96

Q36-11

2812.60

10.33

15.67

1.00

33.33

0.33

0.33

1.00

0.67

n.d.

n.d.

6.00

n.d.

7.83

0.22

0.56

1.51

7.96

0.67

2.26

Q36-12

2812.90

16.67

13.33

3.67

24.00

1.67

n.d.

5.67

9.00

0.67

n.d.

8.00

n.d.

2.49

0.67

0.42

1.93

2.54

0.98

1.96

  1. Note: T,Telinite; C1,Collotelinlte; VD, Vitrodetrinite; C2,Collodetrinite; C3,Corpogelinite; C4,Gelinite; F,Fusinite; SF, Semifusinite; MA, Macrinite; MI, Micrinite; ID, Inertodetrinite; RE, Resinite.
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