Rotating while packed off may cause unexpected heat-induced drill pipe tensile failures Metallographic examination of a drill pipe reveals that frictional forces produced while rotating drillstring induced sufficient heat to either locally temper the pipe or cause a phase transformation of the drill pipe material
Rotating while packed off may cause unexpected heat-induced drill pipe tensile failures Metallographic examination of a drill pipe reveals that frictional forces produced while rotating drillstring induced sufficient heat to either locally temper the pipe or cause a phase transformation of the drill pipe material
- oct. 2007
- 5 p. ; 57-64
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