Patents by Inventor Ian Stuart Gray-Taylor

Ian Stuart Gray-Taylor 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).

  • Well abandonment apparatus
    Patent number: 7380603
    Abstract: A well abandonment apparatus is described. The apparatus can be run on drillstring and does not require the use of explosives to sever the casing. The apparatus includes both a cutting device to perforate and sever the casing and a sealing device to prevent well fluids from reaching the surface while the well abandonment operation is proceeding.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: June 3, 2008
    Assignee: Well-Worx Limited
    Inventors: Steven Jeffrey, Harold Ashton, Ian Stuart Gray-Taylor