| |||
| bit change; bit chamfer; changing bits; changing bit; CB (change of bit) | |||
| drilling bit change; bit changing | |||
|
смена долота : 14 phrases, 6 sujets |
| Champs de pétrole | 3 |
| Forage | 1 |
| Pétrole / pétrole | 6 |
| Pétrole et gaz | 1 |
| Technologie | 1 |
| Technologie pétrolière et gazière | 2 |