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:
Apr. 29, 1986
Filed:
Aug. 29, 1984
William A Blizzard, Houston, TX (US);
James K Garner, Jr, Pearland, TX (US);
John D Anderson, Humble, TX (US);
Camco, Incorporated, Houston, TX (US);
Abstract
A method and valve for stopping production of an oil and/or gas well by injecting a fluid from the outside of a well conduit into the well bore through a check safety valve. The valve, initially in the open position, is actuated to the closed position by an increase of the pressure outside of the conduit relative to the inside pressure. A communication path from the outside of the conduit to the inside of the conduit above the safety valve is opened by pressure in the conduit below the closed safety valve. Fluid is injected into the open communication path through the safety valve to kill well production while maintaining a safety check on the production fluid below the safety valve. The valve may be relatched to its initial open position and reactuated.