 |
| |||
| derrick subbase; derrick substructure; mast substructure; rig base | |||
| derrick base; derrick foundation | |||
| основание буровой вышки: 5 phrases in 4 subjects |
| Drilling | 1 |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
|
| |||
| derrick subbase; derrick substructure; mast substructure; rig base | |||
| derrick base; derrick foundation | |||
| основание буровой вышки: 5 phrases in 4 subjects |
| Drilling | 1 |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |