07882905 is referenced by 13 patents and cites 143 patents.

Drilling systems and methods for enlarging a borehole that include an expandable reamer and an expandable stabilizer axially coupled above the expandable reamer are disclosed. The expandable reamer includes a tubular body having a longitudinal axis and a drilling fluid flow path therethrough, a plurality of generally radially and longitudinally extending blades carried by the tubular body, and a cutting structure carried by at least one blade of the plurality of blades, wherein at least one blade of the plurality of blades is movable outwardly with respect to the longitudinal axis. The expandable stabilizer includes a tubular body having a longitudinal axis and a drilling fluid flow path therethrough, a plurality of generally radially and longitudinally extending bearing pads carried by the tubular body, wherein at least one bearing pad of the plurality of bearing pads includes an up-hole cutting structure carried thereupon and is movable outwardly with respect to the longitudinal axis.

Title
Stabilizer and reamer system having extensible blades and bearing pads and method of using same
Application Number
12/58384
Publication Number
7882905 (B2)
Application Date
March 28, 2008
Publication Date
February 8, 2011
Inventor
Les T Shale
Willis
TX, US
Steven R Radford
The Woodlands
TX, US
Agent
TraskBritt
Assignee
Baker Hughes Incorporated
TX, US
IPC
E21B 10/32
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