07997354 is referenced by 8 patents and cites 53 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 a direction oriented at an acute angle of less than ninety degrees (90°) to a longitudinal axis of the outer body. In some embodiments, the tools may include a moveable inner sleeve member configured to selectively allow hydraulic fluid pressure within the fluid passageway to act directly on the at least one blade. Methods for enlarging a borehole using such expandable reamer tools and methods for removing such expandable reamer tools from a borehole are also disclosed.

Title
Expandable reamers for earth-boring applications and methods of using the same
Application Number
11/949627
Publication Number
7997354 (B2)
Application Date
December 3, 2007
Publication Date
August 16, 2011
Inventor
Anton F Zahradnik
Sugarland
TX, US
Mark R Kizziar
Lafayette
LA, US
Mark E Morris
Coraopolis
PA, US
Les T Shale
Willis
TX, US
Scott S 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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