Patents Assigned to Cobra Tool, Inc.
  • Wellbore anchoring system
    Patent number: 8919431
    Abstract: A hydraulic wellbore anchoring system for use with whipstocks or other tools in either cased or open hole wellbores. The anchoring system includes an upper slip system and a lower slip system. The anchor system may be set using hydraulic pressure and withdrawn by a predetermined upward force. While the slips of the upper and lower slip systems may be set substantially simultaneously, the anchoring system enables sequential disengagement of the slips to reduce the force required for withdrawal.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: December 30, 2014
    Assignee: Cobra Tool, Inc.
    Inventor: Charles Lott