Table 3 Correlation and ranking of factors with initial yield.

From: Quantitative classification evaluation model for tight sandstone reservoirs based on machine learning

Factor

Φ (%)

R50 (µm)

Sp

Dr

P50

K (10–3 µm2)

Pd (MPa)

Correlation coefficient (R2)

0.927

0.896

0.894

0.87

0.83

0.824

0.755

Rank

1

2

3

4

5

6

7

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