Ingegneria meccanica: Industria petrolifera
| English |
| power sub |
  |
|
| Part of speech |
Noun phrase
|
| Grammatical label |
Countable
|
| Definition |
Portable, hydraulic powered, pipe rotating devices which are designed specifically to replace the kelly stem, the kelly bushing and the rotary table. They rotate inside the BOPs and a rubber protector is placed on their outside diameter to protect them from wear.
|
| Definition source |
Sh91
|
| Context |
The PS-60 Power Sub is best suited for light drilling and workover operations using macaroni drillpipe and tubing. It delivers smooth, shock free controlled torque and practically eliminates the danger of twist-offs or swelled boxes on these work strings. It is used to drill out cement or other obstructions in the pipe, for casing scraping operations; and with small drill pipe, it is suited for the drilling of ratholes and water wells.
|
| Context source |
CC88
|
| Subject field |
Petroleum Engineering
|
| Comprehensive concept |
drill stem
|
| it |
power-sub
|
| Reliability code |
3
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|
