Patents Assigned to Well-Worx Limited
  • 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