well-hole : 53 phrases in 16 subjects |
Drilling | 2 |
Facilities | 2 |
Geology | 2 |
Hydraulic engineering | 1 |
Makarov | 1 |
Military | 3 |
Mining | 1 |
Oil / petroleum | 10 |
Oil and gas | 20 |
Oil and gas technology | 1 |
Oilfields | 2 |
Physics | 1 |
Sakhalin | 2 |
Technology | 2 |
Water resources | 2 |
Weapons and gunsmithing | 1 |