Research Article
Intelligent Prediction for Rock Porosity While Drilling Complex Lithology in Real Time
Table 2
Statistical analysis for the cleaned data.
| | | WOB (klbf) | T (kft.lbf) | SPP (psi) | RPM (1/min) | ROP (ft/h) | Q (gpm) | |
| | Minimum | 1.5 | 4.3 | 2140.2 | 77.9 | 26.1 | 627.0 | 0.055 | | Maximum | 26.7 | 11.0 | 3076.0 | 162.5 | 119.6 | 854.0 | 0.429 | | Mean | 11.8 | 7.4 | 2600.9 | 128.5 | 65.8 | 724.9 | 0.207 | | Standard deviation | 7.3 | 1.8 | 201.4 | 15.8 | 18.2 | 73.4 | 0.067 | | Kurtosis | −1.3 | −1.1 | −0.7 | −0.6 | −0.9 | −1.3 | 0.828 | | Skewness | 0.3 | 0.2 | −0.1 | −0.5 | 0.3 | 0.6 | 0.552 | | Range | 25.1 | 6.7 | 935.8 | 84.6 | 93.4 | 227.0 | 0.375 |
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