 |
| |||
| drilling program; drilling project | |||
| программа бурения: 25 phrases in 13 subjects |
| Caspian | 1 |
| Drilling | 2 |
| Ecology | 2 |
| General | 1 |
| Geology | 1 |
| Geophysics | 1 |
| Gold mining | 6 |
| Mineral products | 1 |
| Oil / petroleum | 2 |
| Oil and gas | 4 |
| Oil and gas technology | 2 |
| Production | 1 |
| Sakhalin | 1 |