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Ingegneria meccanica: Industria petrolifera
| English |
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| Noun |
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| Uncountable |
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| derrick substructure |
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| The steel floor used to elevate the drill floor above the ground, on which the drilling equipment is mounted. It is composed of derrick supports and rotary supports. |
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| Ode85 |
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| The height of the substructure is often dependent on the size and pressure rating of the wellhead equipment and blowout prevention equipment. |
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| Ode85 |
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| derrick floor |
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| Petroleum Engineering |
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| completion/workover rigs |
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| sottostruttura |
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| 3 |
