Patents Represented by Attorney Bracewell & Givliani

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  • Preloaded riser coupling system
    Patent number: 7963336
    Abstract: An offshore riser system has riser joints, each having a pin and a box. The pin has an external grooved profile that is engaged by a locking element carried by the box of another riser joint. An actuating ring engages with the locking element to move it into the locked position. A retractable spider supports the string of riser while the new joint is being made up. A makeup tool on the riser deploying floor moves the ring relative to the locking element, causing the locking element to move to the locked position.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: June 21, 2011
    Assignee: Vetco Gray Inc.
    Inventors: Thomas A. Fraser, Charles E. Jennings, John E. Nelson