Patents Assigned to Ziebel Group
  • Conveyor tube for use in installing or replacing a well tool in a producing well and procedures for use of the same
    Patent number: 7950467
    Abstract: This invention describes a conveyor tube for use in installing or replacing a well tool in a producing well, wherein the well tool is fed into the conveyor tube which at least runs between a valve tree and at least one receiving unit in the well, and wherein the conveyor tube is installed on the outside of and in fluid communication with a production tube in the well. A method for using same is also described.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: May 31, 2011
    Assignee: Ziebel Group
    Inventor: Henning Hansen