Patents Assigned to Fire-Fox International, Inc.
  • Patent number: 4697639
    Abstract: A blow-out protector and fire control system is located in a rotating Kelly flange assembly and flange housing. The blow-out protector is based upon compressing a rubber Kelly bushing and seal positioned around a rotating Kelly by upward movement of a catch ring on the rotating Kelly. The catch ring forces a compressor ring positioned below the rubber bushing upward causing the rubber bushing to form a seal between the Kelly and the rotating Kelly flange assembly. The fire control system involves injecting an inert gas through an opening in the Kelly flange housing into the well casing, and removing high pressure fluid sequentially through the same opening. As an alternative, high pressure fluid can be removed from the well pipe simultaneously. The high pressure fluid is piped to a location remote from the well for storage or flaring.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: October 6, 1987
    Assignee: Fire-Fox International, Inc.
    Inventors: Miles F. Caraway, Bobby L. Caraway