Underreaming and stabilizing tool and method for its use

Details Underreaming and stabilizing tool and method for its use Underreaming and stabilizing tool and method for its use

2005-04-19

2010-02-09

Bagnell, David J (Department: 3672)

Boring or penetrating the earth

Processes

C175S269000, C175S406000, C175S286000

Reexamination Certificate

active

07658241

ABSTRACT:
Provided is a drilling tool that includes a tubular body defining a longitudinal axial cavity extending therethrough. The tubular body also defines at least one radial guidance channel extending radially from the axial cavity through the tubular body. A cutter element is disposed in the at least one radial guidance channel and includes an internal surface inclined at an angle to a longitudinal axis of the tubular body. The drilling tool also includes a wedge element having an external surface configured to engage the internal surface of the cutter element and to direct the cutter element from a retracted position to an extended position as the wedge element moves from a first position to a second position.

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