Patents by Inventor Fergus Coutts Hines

Fergus Coutts Hines 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).

  • Wear bushing running and retrieval tools
    Patent number: 6719044
    Abstract: Devices and methods for selectively emplacing a wear bushing in a wellhead housing and removing it therefrom. A drill string-mounted running tool is used to selectively engage the wear bushing during emplacement and removal. The wear bushing need not be removed each time the drill string is tripped into or out of the well. In addition, the drill string may continue to be lowered after the wear bushing is landed since the running tools described can easily pass through the bushing.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: April 13, 2004
    Assignee: ABB Vetco Gray Inc.
    Inventors: David L. Ford, Kevin R. Koen, Fergus Coutts Hines
  • Wear bushing running and retrieval tools
    Publication number: 20020092656
    Abstract: Devices and methods for selectively emplacing a wear bushing in a wellhead housing and removing it therefrom. A drill string-mounted running tool is used to selectively engage the wear bushing during emplacement and removal. The wear bushing need not be removed each time the drill string is tripped into or out of the well. In addition, the drill string may continue to be lowered after the wear bushing is landed since the running tools described can easily pass through the bushing.
    Type: Application
    Filed: March 8, 2001
    Publication date: July 18, 2002
    Inventors: David L. Ford, Kevin R. Koen, Fergus Coutts Hines