Ram blowout preventer apparatus

Details Ram blowout preventer apparatus Ram blowout preventer apparatus

1985-09-30

1987-03-03

Schwadron, Martin P.

Valves and valve actuation

Blow-out preventers

Radial reciprocating ram

277 30, 277192, E21B 3306

Patent

active

046470026

ABSTRACT:
A top seal, ram assembly, blowout preventer, and housing for a blowout preventer are disclosed according to the invention in which outer anti-extrusion plates are provided at the ends of the top seal which are adapted for bearing against a surface of the blowout preventer housing. The housing of the blowout preventer is provided with a horizontal bore having a generally rectangular cross-section with thickened vertical wall sections in the proximity of the vertical bore through the housing. The thickened wall sections are adapted to cooperate with the outer anti-extrusion plates of the top seal in order to support the pressure created in the packer and the top seal when the rams are closed.

REFERENCES:
patent: 3102709 (1963-09-01), Allen
patent: 3434729 (1969-03-01), Shaffer et al.
patent: 3946806 (1976-03-01), Meynier, III
patent: 4323256 (1982-04-01), Miyagishima et al.
patent: 4332367 (1982-06-01), Nelson
patent: 4347898 (1982-09-01), Jones
patent: 4398729 (1983-08-01), Bishop et al.
patent: 4416441 (1983-11-01), Van Winkle

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