Patents by Inventor John Waddington

John Waddington 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).

  • Downhole perforator assembly and method for use of same
    Patent number: 7467661
    Abstract: A downhole perforator assembly (10) for establishing communication between the interior of a tubular string (18) and a surrounding annulus (24) includes a downhole power unit (100) having a power unit housing (150) and a moveable shaft (130) and a downhole perforator (260) having a perforator housing (262), a mandrel (278) slidably positioned within the perforator housing (262) and a penetrator (288) radially outwardly extendable from the perforator housing (262). The power unit housing (150) is operably associated with the perforator housing (262) and the moveable shaft (130) operably associated with the mandrel (278) such that when the downhole power unit (100) is activated and the moveable shaft (130) is longitudinally shifted relative to the power unit housing (150), the mandrel (278) is longitudinally shifted relative to the perforator housing (262) and at least a portion of the penetrator (288) is extended radially outwardly from the perforator housing (262).
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: December 23, 2008
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Scott Alistair Gordon, Tom Chandler, John Waddington, Johnny Mack Dove, William L. Vidrine, Glen Hall, Jack Gammill Clemens
  • Downhole perforator assembly and method for use of same
    Publication number: 20070277980
    Abstract: A downhole perforator assembly (10) for establishing communication between the interior of a tubular string (18) and a surrounding annulus (24) includes a downhole power unit (100) having a power unit housing (150) and a moveable shaft (130) and a downhole perforator (260) having a perforator housing (262), a mandrel (278) slidably positioned within the perforator housing (262) and a penetrator (288) radially outwardly extendable from the perforator housing (262). The power unit housing (150) is operably associated with the perforator housing (262) and the moveable shaft (130) operably associated with the mandrel (278) such that when the downhole power unit (100) is activated and the moveable shaft (130) is longitudinally shifted relative to the power unit housing (150), the mandrel (278) is longitudinally shifted relative to the perforator housing (262) and at least a portion of the penetrator (288) is extended radially outwardly from the perforator housing (262).
    Type: Application
    Filed: June 1, 2006
    Publication date: December 6, 2007
    Inventors: Scott Alistair Gordon, Tom Chandler, John Waddington, Johnny Mack Dove, William L. Vidrine, Glen Hall, Jack Gammill Clemens