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| previous | kelly - 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 strong, four- or six-sided high-grade molybdenum steel pipe located at the top of the drill string, that comes in lengths of 40 and 54 ft. It is fitted on the master bushing and rotary table and runs through the kelly bushing. Its main functions are to: (a) connect the swivel to the uppermost length of drill pipe, (b) transmit rotary torque to the drillstring, (c) allow the drillstring to move longitudinally while keeping rotation under way, (d) convey the drilling fluid from the swivel into the drillstring. |
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| Sh91 |
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| The kelly is the longest of the tubulars in the drillstring: 40 to 54 ft, since the driller needs to be able to drill a little farther than the length of a drillpipe component in order to add on an extra one. |
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| Sh91 |
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| Petroleum Engineering |
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| rotating system |
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| asta motrice |
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