 |
| |||
| rod and drop-pull system | |||
| Canadian drilling; percussion-rod drilling; rod- tool drilling; rod-tool drilling | |||
| rod-tool drill; rod tool drilling | |||
| ударно-штанговое бурение: 11 phrases, 5 sujets |
| Champs de pétrole | 1 |
| Exploitation minière | 1 |
| Forage | 1 |
| Pétrole / pétrole | 6 |
| Technologie | 2 |