Research Article
Data-Driven Methodology for the Prediction of Fluid Flow in Ultrasonic Production Logging Data Processing
Table 5
Analysis table of partial correlation of variables related to oil-water two-phase flow.
| | Correlation | | Control variable | Water cut | Amplitude of oil | Frequency of oil | Area of oil peak | Amplitude ratio |
| | Total flow | Water cut | Correlation | 1.000 | -.872 | .800 | -.852 | -.918 | | Significance (two-tailed) | . | .000 | .000 | .000 | .000 | | Degree of freedom | 0 | 21 | 21 | 21 | 21 | | Amplitude of oil | Correlation | -.872 | 1.000 | -.745 | .907 | .963 | | Significance (two-tailed) | .000 | . | .000 | .000 | .000 | | Degree of freedom | 21 | 0 | 21 | 21 | 21 | | Frequency of oil | Correlation | .800 | -.745 | 1.000 | -.505 | -.660 | | Significance (two-tailed) | .000 | .000 | . | .014 | .001 | | Degree of freedom | 21 | 21 | 0 | 21 | 21 | | Area of oil peak | Correlation | -.852 | .907 | -.505 | 1.000 | .971 | | Significance (two-tailed) | .000 | .000 | .014 | . | .000 | | Degree of freedom | 21 | 21 | 21 | 0 | 21 | | Amplitude ratio | Correlation | -.918 | .963 | -.660 | .971 | 1.000 | | Significance (two-tailed) | .000 | .000 | .001 | .000 | . | | Degree of freedom | 21 | 21 | 21 | 21 | 0 |
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