Patents by Inventor Pat Patterson

Pat Patterson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Directional casing drilling
    Patent number: 7004263
    Abstract: A directional casing drilling system including a casing string for rotation of a drill bit, a shaft coupled to the casing string, and a sleeve having pads that are hydraulically extensible. The sleeve may be positioned about a portion of the shaft. The invention may also include a tube connecting the sleeve to the drill collar, the tube adapted to conduct drilling fluid, and a valve system adapted to operatively conduct at least a portion of the drilling fluid to the pads whereby the pads move between an extended position and a retracted position.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: February 28, 2006
    Assignee: Schlumberger Technology Corporation
    Inventors: Keith A. Moriarty, Michael R. Johnson, Attilio C. Pisoni, Ruben Martinez, Spyro Kotsonis, Alain P. Dorel, Pat Patterson, Stuart Schaaf
  • [DIRECTIONAL CASING DRILLING]
    Publication number: 20040104051
    Abstract: A directional casing drilling system including a casing string for rotation of a drill bit, a shaft coupled to the casing string, and a sleeve having pads that are hydraulically extensible. The sleeve may be positioned about a portion of the shaft. The invention may also include a tube connecting the sleeve to the drill collar, the tube adapted to conduct drilling fluid, and a valve system adapted to operatively conduct at least a portion of the drilling fluid to the pads whereby the pads move between an extended position and a retracted position.
    Type: Application
    Filed: October 2, 2003
    Publication date: June 3, 2004
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Keith A. Moriarty, Michael R. Johnson, Attilio C. Pisoni, Ruben Martinez, Spyro Kotsonis, Alain P. Dorel, Pat Patterson, Stuart Schaaf