08453763 is referenced by 6 patents and cites 61 patents.

Expandable reamer tools include an outer body, a fluid passageway extending through the outer body, and at least one blade configured to slide relative to the outer body between a retracted position and an expanded position. In some embodiments, the tools may include a formation-engaging surface comprising a gage area. In other embodiments, the tools may include a radially recessed area extending from a back edge of the formation-engaging surface. Methods for removing such expandable reamer tools from a borehole are also disclosed.

Title
Expandable earth-boring wellbore reamers and related methods
Application Number
13/182083
Publication Number
8453763 (B2)
Application Date
July 13, 2011
Publication Date
June 4, 2013
Inventor
Anton F Zahradnik
Sugarland
TX, US
Mark R Kizziar
Lafayette
LA, US
Mark E Morris
Conroe
TX, US
Les T Shale
Willis
TX, US
Scott Shiquiang Shu
Spring
TX, US
Steven R Radford
The Woodlands
TX, US
Agent
TraskBritt
Assignee
Baker Hughes Incorporated
TX, US
IPC
E21B 10/32
E21B 7/28
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