Table 1
Data sources.
| Classification | Data | |
|---|---|---|
| Logging information | Depth | Drilling time record |
| Formation information | Cuttings logging data | |
| Stratigraphic stratification | ||
| Drilling information | Bit usage | Bit usage |
| Drilling log | Drilling performance | |
| Daily BHA | ||
| Daily bit | ||
| Drilling fluid information | Actual measurement of drilling fluid instruments | |
| Usage record of drilling fluid |