 |
| well-drilling: 128 phrases in 25 subjects |
| Caspian | 2 |
| Construction | 1 |
| Drilling | 9 |
| General | 11 |
| Geology | 2 |
| Geophysics | 1 |
| Karachaganak | 1 |
| Logistics | 1 |
| Makarov | 8 |
| Mechanic engineering | 1 |
| Military | 5 |
| Mining | 7 |
| Natural resourses and wildlife conservation | 2 |
| Oil / petroleum | 24 |
| Oil and gas | 18 |
| Oil and gas technology | 3 |
| Oilfields | 9 |
| Production | 3 |
| Programming | 3 |
| Sakhalin | 6 |
| Sakhalin A | 1 |
| Sakhalin S | 1 |
| Seismology | 1 |
| Technology | 4 |
| Tengiz | 4 |