Table 5 Comprehensive fractal evaluation index parameters.

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

Well number

Fracturing section

∆α′

D′

Gas production contribution rate

Gas production (m3/d)

Cassification

Well JY6-2

10

0.5057

0.3120

1.155

6118.19

I

11

0.6166

0.1634

1.366

7240.08

I

12

0.8768

0.3898

1.95

10,335.9

I

13

0.8987

0.3772

1.958

10,377.9

I

14

1.0000

0.4222

2.14

11,342.2

I

Well JY10-4

9

0.2894

0.5395

0.693

3672.15

II

10

0.2606

0.7505

0.626

3318.18

II

11

0.1909

0.7467

0.504

2670.26

II

12

0.2797

0.6050

0.704

3728.2

II

13

0.1089

0.9877

0.32

1693.85

III

14

0.3868

0.4728

0.885

4692.51

II

15

0.1483

0.9281

0.412

2184.41

III

16

0.2345

0.6656

0.598

3170.81

II

17

0.2911

0.7273

0.688

3645.45

II

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