Patents by Inventor Warren E. Koshak

Warren E. Koshak 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).

  • Apparatus for running jointed tubulars utilizing a coiled tubing injector
    Patent number: 6135202
    Abstract: A lift sub for removing jointed tubulars from a wellbore and for inserting jointed tubulars is provided. A coiled tubing injector having opposed gripper chains engages the lift sub and may be actuated to raise or lower the lift sub. The lift sub has a connecting means at the lower end thereof for connecting the lift sub to a jointed tubular. The coiled tubing injector can be actuated to raise or lower the jointed tubular so as to remove the jointed tubular from the wellbore or to insert it therein.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: October 24, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Warren E. Koshak