| |||
rotary rock bit (Yeldar Azanbayev) | |||
wire-line bit | |||
rotary drill bit | |||
rotary-drill bit |
долото вращательного бурения: 19 phrases in 9 subjects |
Drilling | 1 |
Geology | 3 |
Makarov | 1 |
Mining | 1 |
Oil / petroleum | 3 |
Oil and gas | 1 |
Oil and gas technology | 4 |
Oilfields | 4 |
Technology | 1 |