 |
| |||
| down hole valve (MichaelBurov); down-hole valve (MichaelBurov) | |||
| downhole valve; retrievable valve | |||
| Скважинный клапан: 63 phrases in 10 subjects |
| Drilling | 4 |
| General | 1 |
| Oil / petroleum | 11 |
| Oil and gas | 16 |
| Oil and gas technology | 4 |
| Oilfields | 5 |
| Sakhalin | 17 |
| Sakhalin A | 2 |
| Sakhalin R | 1 |
| Tengiz | 2 |