07513318 is referenced by 54 patents and cites 44 patents.

A bottom hole assembly includes a drill bit, a stabilized underreamer assembly located behind the drill bit, and a drilling assembly. A method to drill a formation includes positioning a stabilized underreamer assembly behind a drill bit, positioning a drilling assembly behind the stabilized underreamer assembly, and rotating the drill bit and stabilized underreamer assembly with the drilling assembly. A stabilized underreamer located between a directional drilling assembly and a drill bit includes at least one arm assembly extending from the stabilized underreamer assembly, wherein the arm assembly includes a stabilizer portion and an underreamer cutting structure.

Title
Steerable underreamer/stabilizer assembly and method
Application Number
11/333945
Publication Number
7513318 (B2)
Application Date
January 18, 2006
Publication Date
April 7, 2009
Inventor
Charles H Dewey
Houston
TX, US
Lance D Underwood
Cypress
TX, US
Agent
Osha • Liang
Assignee
Smith International
TX, US
IPC
E21B 10/26
E21B 7/04
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