Patents Assigned to Camco Internationa Inc.
  • Electrically operated safety release joint
    Patent number: 5257663
    Abstract: A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: November 2, 1993
    Assignee: Camco Internationa Inc.
    Inventors: Ronald E. Pringle, Arthur J. Morris