 |
| |||
| casing flow string (ABelonogov); production casing string (Alexander Demidov) | |||
| production casing | |||
| обсадная эксплуатационная колонна: 32 phrases in 7 subjects |
| Drilling | 3 |
| Mining | 1 |
| Oil / petroleum | 10 |
| Oil and gas | 6 |
| Oil and gas technology | 1 |
| Oilfields | 4 |
| Technology | 7 |