Table 2 Dataset basics.
Name | Abbreviation | Unit | Average | Maximum | Minimum | Median | Variance |
|---|---|---|---|---|---|---|---|
Measured depth | MD | m | 4334.5 | 7162.0 | 1507.0 | 4334.50 | 2,665,868 |
Hook load | HL | kN | 1550 | 2450 | 635 | 1589 | 206,949 |
Bit revolution per minute | RPM | rev/min | 74 | 161 | 1.0 | 71 | 189 |
Drilling time | DT | Min/m | 7 | 113 | 1.9 | 5 | 63 |
Rate of penetration | ROP | m/h | 20.9 | 120 | 1.0 | 12 | 474 |
Weight on bit | WOB | kN | 51.6 | 178 | 1.0 | 41 | 1028 |
Torque | TORQUE | kN·m | 4.7 | 9.0 | 0.0 | 5 | 2.1 |
Stand pipe pressure | SPP | MPa | 18.0 | 22 | 8.0 | 19 | 5.6 |
Drill fluid flow rate | Q | l/min | 2324.9 | 3685.4 | 1086.3 | 1903.1 | 405,329 |
DC exponent | DC | / | 0.9 | 2.1 | 0.4 | 1.7 | 0.1 |
Drilling fluid equivalent density | ECD | g/cm3 | 1.2 | 1.3 | 1.1 | 1.3 | 0.0 |
Poisson’s ratio | \(\mu \) | / | 0.7 | 2.3 | 0.1 | 0.6 | 0.1 |
Normal DC | DCN | / | 1.0 | 1.4 | 0.5 | 0.0 | 0.9 |
Formation pressure gradient | \({g}_{p}\) | g/cm3 | 2.1 | 2.4 | 1.7 | 2.1 | 0.0 |
Formation fracture pressure gradient | \({G}_{f}\) | g/cm3 | 1.1 | 3.4 | 0.6 | 1.0 | 0.0 |
