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| drilling with mud (DWO) | |||
| бурение с буровым раствором: 27 phrases in 6 subjects |
| Caspian | 1 |
| Oil / petroleum | 20 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Oilfields | 2 |
| Technology | 1 |
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