Patents Assigned to West Oil Tools AS
  • Patent number: 8881827
    Abstract: A wellhead for subsea use and a method of making same where the wellhead is constituted by a body having a bore (3) therethrough and at least one side bore (9, 11) for provision of fluid communication through the wall of the wellhead (1), and where the wellhead (1) includes a pipe hanger (30) provided with a bore (34) therethrough and a side bore (36) for provision of fluid communication between a tubing string (9?) connected to the pipe hanger (30) and one of the side bores (9) of the wellhead (1), where the wellhead (1) is provided with at least one internal safety valve (42, 44) arranged to be able to shut off fluid communication through the wellhead.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: November 11, 2014
    Assignee: West Oil Tools AS
    Inventor: Bjorn Bjerke