Table 1 Evaluation of the capacity contribution of some production profiles.

From: A comprehensive logging evaluation method for identifying high-quality shale gas reservoirs based on multifractal spectra analysis

Well number

Fracturing section

Number of clusters

Spacing of well sections (m)

Spacing of clusters (m)

Measuring depth (m)

Vertical depth (m)

Gas production (m3/d)

Gas production contribution rate

Yield classification

Well JY10-4

9

3

43

26.25

3598.88

2370.29

3672.15

1.149

Middle yield

10

3

32.5

21

3504.38

2368.17

3318.18

1.038

Middle yield

11

3

42

21.5

3427.63

2364.9

2670.26

0.835

Middle yield

12

3

38

23

3337.755

2359.45

3728.2

1.166

Middle yield

13

3

42

21

3252.63

2354.29

1693.85

0.53

Low yield

14

3

41

22

3161.63

2350.28

4692.51

1.468

High yield

15

3

43

20.5

3066.255

2347.3

2184.41

0.683

Middle yield

16

3

43

21.5

2977.255

2344.7

3170.81

0.992

Middle yield

17

3

42

24

2898.255

2342.22

3645.45

1.14

Middle yield

Well JY6-2

10

3

26

30

3402.125

2548.42

6118.19

0.507

Low yield

11

3

25

30.5

3312.125

2548.69

7240.08

0.6

Middle yield

12

3

23

30

3144.875

2549.16

10,335.9

0.856

Middle yield

13

3

56

32.5

3115.75

2549.65

10,377.9

0.859

Middle yield

14

3

35

31

3005.625

2551.82

11,342.2

0.939

Middle yield

15

3

32

29.5

2915.375

2554.97

27,037.6

2.239

High yield

Well JY8-2

13

2

21

20.5

3283.375

2375.55

2315.16

0.299

Low yield

14

2

32

23

3205.5

2375.17

4774.54

0.617

Middle yield

15

2

32

21

3176.625

2375.1

3385.66

0.437

Low yield

16

2

32

20.5

3258.625

2375.42

3253.13

0.42

Low yield

17

2

22

19.5

3436.75

2376.07

10,287.7

1.328

High yield

18

3

22

20.5

3839.875

2376.8

5546.2

0.716

Middle yield

19

3

31

21.5

3857.875

2377.3

7270.92

0.939

Middle yield

20

3

31

20.5

3868.75

2377.64

9391.67

1.213

High yield

21

3

42

21

2702.5

2378.05

23,472

3.03

High yield

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