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Ingegneria meccanica: Industria petrolifera
| English |
| drill stem |
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| Part of speech |
Noun phrase
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| Grammatical label |
Countable
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| Full form |
drill stem assembly
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| Definition |
See drill string
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| Context |
In every drill pipe and drill collar rotated in the hole, this continuous movement from tension to compression and back to tension takes place with each rotation of the drill stem. If the surface of any drill stem member is cracked, every time this crack comes to the tension side of the bend it tends to enlarge.
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| Context source |
Sh91
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| Synonym |
drill string, bottom hole assembly
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| Subject field |
Petroleum Engineering
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| Partitive concept |
bit, drill collar, drill pipe, heavyweight drillpipe, sub, reamer, stabilizer, jar
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| it |
batteria di perforazione
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| Reliability code |
3
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