 |
| |||
| expanding hole opener | |||
| staged hole opener (grafleonov) | |||
| hole opener (увеличивает скважину в 1,5 – 2 раза) | |||
| expanding reamer; underreamer | |||
| раздвижной буровой расширитель: 7 phrases in 5 subjects |
| Makarov | 1 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Oilfields | 2 |
| Technology | 1 |