stack-out O&G, oilfield.

[Paravoli]

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stack-out

Слово встречается в следующем контексте:
Another problem is helical stack-out. Helical stack-out is defined as the tendency of the drill string to distort into a helical configuration within the horizontal section of the bore hole causing a loss of drill weight, or pressure, after the horizontal bore hole extends 500 or so feet. (http://www.patentstorm.us/patents/5522467/description.html)
Заранее спасибо