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| спуск в скважину (MichaelBurov); спуск колонны в скважину (MichaelBurov); спуск в скважину бурильного инструмента (MichaelBurov) | |||
| RIH operation: 6 phrases in 2 subjects |
| Drilling | 3 |
| Oil and gas | 3 |
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