Wells – Above ground apparatus – External anchoring or bracing means
Patent
1991-06-18
1992-06-09
Neuder, William P.
Wells
Above ground apparatus
External anchoring or bracing means
166 97, 169 69, E21B 33037
Patent
active
051198878
ABSTRACT:
An Oil Well Head Fire Cap is a self-locking and sealing adapter coupling that, when lowered onto an uncontrolled well head fire, will connect a new well head valve to a burning oil well casing. When the valve is closed, the fire is extinguished by stopping the flow of gushing fuel. The Coned shape of the device will allow it to center itself and, when forced down with a cement anchor block, will compress an inner casing into a tapered sleeve until it reaches the seal material and seats. A plurality of spring-engaged sprags, set in recesses, with upwardly pointed horizontal teeth, will roll back, out of the way, as the coupling is lowered on the outer, or surface, casing. As the anchor block is removed, the coupling is lifted by the downhole pressure. The spring-engaged sprags will bite into the outer casing forcing them to roll out tighter against the outer casing, making a firmer grip or deeper "bite". The embodiment of the coupling/Fire Cap will be of corresponding shape to the removable cement anchor block.
REFERENCES:
patent: 1520288 (1924-12-01), Featherstone
patent: 1830061 (1931-11-01), Howe
patent: 4323118 (1982-04-01), Bergmann
patent: 4433733 (1984-02-01), Cunningham
patent: 4562888 (1986-01-01), Collet
LandOfFree
Oil well head fire cap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oil well head fire cap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil well head fire cap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1798707