Valves and valve actuation – Blow-out preventers
Patent
1982-01-04
1984-05-08
Schwadron, Martin P.
Valves and valve actuation
Blow-out preventers
277 73, 277121, 277235R, B65D 5300
Patent
active
044470371
ABSTRACT:
A well blowout preventer packer unit is characterized by long life, and induced back to front (radial) rubber feeding between metallic inserts to close on well pipe or on a well tool for producing a pressure gradient against the pipe or tool which is greatest at the bottom of the packer extent engaging the pipe, and lowest at the top of the packer extent engaging the pipe. The preventer piston has at least three, and typically four, frusto-conical surfaces to progressively and sequentially penetrate the packer rubber to effect controlled and enhanced rubber displacement for sealing against the pipe or tool.
REFERENCES:
patent: 2038140 (1936-04-01), Stone
patent: 2124015 (1938-07-01), Stone et al.
patent: 2148844 (1939-02-01), Stone et al.
patent: 2168813 (1939-08-01), Vinding
patent: 2287205 (1942-06-01), Stone
patent: 2609836 (1952-09-01), Knox
patent: 3225831 (1965-12-01), Knox
patent: 3323773 (1967-06-01), Walker
patent: 3486759 (1969-12-01), Lewis
patent: 3533468 (1970-10-01), Lewis
patent: 3591125 (1971-07-01), Lewis
patent: 3917293 (1975-11-01), Lewis et al.
patent: 3958808 (1976-05-01), Lewis
patent: 4098341 (1978-07-01), Lewis
patent: 4098516 (1978-07-01), Murman
patent: 4283039 (1981-08-01), Schaeper et al.
Huey Wai J.
Matsuda Eugene
Murman Fernando
Haefliger William W.
Hydril Company
Novack Sheri
Schwadron Martin P.
LandOfFree
Well blowout preventer, and packing element does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Well blowout preventer, and packing element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well blowout preventer, and packing element will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1598551