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| mud rings (на отдельных интервалах ствола скважины) | |||
| отложения корки: 15 phrases in 7 subjects |
| Chemistry | 1 |
| Drilling | 1 |
| Geology | 1 |
| Makarov | 1 |
| Oil / petroleum | 8 |
| Oil and gas | 2 |
| Oilfields | 1 |
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