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Drilling subsurface wellbores with cutting structures

United States Patent

November 30, 2010
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A system for forming a wellbore includes a drill tubular. A drill bit is coupled to the drill tubular. One or more cutting structures are coupled to the drill tubular above the drill bit. The cutting structures remove at least a portion of formation that extends into the wellbore formed by the drill bit.
Mansure; Arthur James (Alburquerque, NM), Guimerans; Rosalvina Ramona (The Woodlands, TX)
Shell Oil Company (Houston, TX)
12/ 106,115
April 18, 2008
GOVERNMENT INTEREST The Government has certain rights in the invention pursuant to Agreement Nos. SD 10634 and NFE 062050824 between Sandia National Laboratories (operating under Agreement DE-AC04-94AL85000Sa for the U.S. Department of Energy) and Shell Exploration and Production Company.