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| Dyna-Drill (фирменное название Yeldar Azanbayev) | |||
| downhole mud motor | |||
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забойный гидротурбинный двигатель : 58 phrases in 6 subjects |
| Drilling | 1 |
| Oil / petroleum | 17 |
| Oil and gas | 3 |
| Oil and gas technology | 15 |
| Oilfields | 18 |
| Technology | 4 |
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