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Ingegneria meccanica: Industria petrolifera
| English |
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| Noun phrase |
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| Countable |
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| A check valve installed in the upper drill stem to protect rotary swivels, hoses, stand pipe and mud pumps. Its main function is to maintain well control by preventing high pressure backflow. |
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| CC88 |
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| It is recommended that each inside BOP should have a working pressure rating as high as the blowout preventers since it must be expected to withstand the same pressure. |
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| CC88 |
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| Petroleum Engineering |
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| surface blowout preventer system |
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| gray float valve, drop-in valve |
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| BOP per interno batteria |
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