The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 1987
Filed:
Apr. 14, 1986
Miles F Caraway, Shreveport, LA (US);
Bobby L Caraway, Shreveport, LA (US);
Fire-Fox International, Inc., Hinton, WV (US);
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.