| |||
| колонна утяжелённых бурильных труб | |||
| колонна УБТ | |||
|
drill-collar string : 12 phrases in 4 subjects |
| Drilling | 1 |
| Oil / petroleum | 4 |
| Oil and gas | 4 |
| Oil and gas technology | 3 |
| |||
| колонна утяжелённых бурильных труб | |||
| колонна УБТ | |||
|
drill-collar string : 12 phrases in 4 subjects |
| Drilling | 1 |
| Oil / petroleum | 4 |
| Oil and gas | 4 |
| Oil and gas technology | 3 |