 |
| |||
| bottom wiper plug; dead-end cementing plug; lower plug; bottom plug | |||
| bottom cementing plug | |||
| нижняя цементировочная пробка: 3 phrases in 2 subjects |
| Oil / petroleum | 2 |
| Sakhalin | 1 |
|
| |||
| bottom wiper plug; dead-end cementing plug; lower plug; bottom plug | |||
| bottom cementing plug | |||
| нижняя цементировочная пробка: 3 phrases in 2 subjects |
| Oil / petroleum | 2 |
| Sakhalin | 1 |