A downhole tool is provided that includes a grip assembly for contacting a well formation. The grip assembly includes a gripper body; and a centralizer that is attached to and radially expandable with respect to the gripper body and that has a geometry which is lockable by a locking device. The grip assembly also includes a force amplifier in force transmitting relation with the centralizer, wherein the force amplifier transfers a force in a first direction to a much larger force in a second direction when the centralizer is locked by the locking device.

Title
Self-anchoring device with force amplification
Application Number
11/610143
Publication Number
20070181298
Application Date
December 13, 2006
Publication Date
August 9, 2007
Inventor
Franz Aguirre
Missouri City
TX, US
Matthew Billingham
Houston
TX, US
Carl J Roy
Richmond
TX, US
Robin A Ewan
Stafford
TX, US
Dwight C Chilcoat
Fresno
TX, US
Todor K Sheiretov
Houston
TX, US
Agent
Schlumberger Ipc
TX, US
IPC
E21B 23/00
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