07854258 is referenced by 13 patents and cites 50 patents.

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
12/396936
Publication Number
7854258 (B2)
Application Date
March 3, 2009
Publication Date
December 21, 2010
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
Jody Destefanis
David Hofman
Michael Flynn
Assignee
Schlumberger Technology Corporation
TX, US
IPC
E21B 31/00
E21B 31/12
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