Selectively actuatable expandable underreamer/stablizer

Details Selectively actuatable expandable underreamer/stablizer Selectively actuatable expandable underreamer/stablizer

2008-01-01

2008-01-01

Bates, Zakiya W. (Department: 3676)

Boring or penetrating the earth

Processes

C175S266000, C175S269000

Reexamination Certificate

active

07314099

ABSTRACT:
An expandable downhole tool comprises a tubular body having an axial flowbore extending therethrough, at least one moveable arm, and a selectively actuatable sleeve that prevents or allows the at least one moveable arm to translate between a collapsed position and an expanded position. A method of expanding the downhole tool comprises disposing the downhole tool within the wellbore, biasing the at least one moveable arm to a collapsed position corresponding to an initial diameter of the downhole tool, flowing a fluid through an axial flowbore extending through the downhole tool while preventing the fluid from communicating with a different flowpath of the downhole tool, allowing the fluid to communicate with the different flowpath by introducing an actuator into the wellbore, and causing the at least one moveable arm to translate to an expanded position corresponding to an expanded diameter of the downhole tool.

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