Patents Assigned to Target Well Control Limited
  • Positioning assembly
    Patent number: 6510898
    Abstract: A system is disclosed for positioning downhole tools in a borehole such as a cased or lined oilwell, wherein the system is adapted to control the vertical and rotational position of the tool within the borehole. The system uses a plurality of guide slots or ledges which form a spiral on the inner surface of a tubular.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: January 28, 2003
    Assignees: Weatherford/Lamb, Inc., Target Well Control Limited
    Inventor: Jean P. Buytaert