发明申请
US20090272543A1 Tubular Running Devices and Methods 审中-公开
管状运行装置及方法

Tubular Running Devices and Methods
摘要:
One example of an apparatus for gripping and rotating a tubular includes a mandrel having a longitudinal axis; a first slip disposed on the mandrel; and a second slip disposed on the mandrel axially spaced apart from the first slip, the first slip and second slip operationally connected to move in unison axially; wherein when the first slip and the second slip are moved axially from a first point toward a second point the first and second slips extend radially into gripping contact with the tubular and wherein rotation of the mandrel further urges the second slip radially away from the mandrel.
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