 |
| |||
| cable drilling | |||
| Pennsylvanian drilling | |||
| cable-tool drilling; churn drilling | |||
| канатно-ударное бурение: 180 phrases in 12 subjects |
| Construction | 4 |
| Drilling | 9 |
| Geology | 5 |
| Makarov | 3 |
| Military | 5 |
| Mining | 47 |
| Oil / petroleum | 84 |
| Oil and gas | 8 |
| Oil and gas technology | 4 |
| Oilfields | 6 |
| Technology | 4 |
| Water resources | 1 |