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| previous | derrick (en) - collezione «Ingegneria meccanica: Industria petrolifera» - Maria Cristina Basti | next |
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Ingegneria meccanica: Industria petrolifera
| English |
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| Noun |
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| Countable |
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| A structure of square cross-section constructed of special structural steel, having a yield strength of greater than 33,000 psi. It consists of four legs, connected by horizontal structural members described as girts. Its main function is to allow hoisting of equipment in and out of the well. It also provides the working place for the derrick man during tripping operations. |
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| Ode85 |
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| The standard derrick has become rare today except for extremely deep wells and offshore drilling because dismantling and reassembling operations are long, dangerous and therefore no longer viable at all. |
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| Sh91 |
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| standard derrick |
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| Petroleum Engineering |
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| hoisting system |
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| derrick |
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