Ram-type blowout preventer

Details Ram-type blowout preventer Ram-type blowout preventer

1983-06-08

1985-04-02

Scott, Samuel

Valves and valve actuation

Blow-out preventers

277129, 277215, E21B 3306

Patent

active

045083126

ABSTRACT:
A ram-type blowout preventer having a housing with a vertical bore, aligned ram guideways extending outward from opposite sides of the bore, a ram in each guideway, means for moving the rams inward and outward in the guideways to open and close on a drill or pipe string in the bore, a packer in each ram having a packing with an upper slotted plate thereon and a lower slotted plate therebelow, the plates being sufficiently flexible to move into close proximity to a string when the rams are closed thereon to support the packing against extrusion.

REFERENCES:
patent: 1653439 (1927-12-01), Payne
patent: 3356377 (1967-12-01), Voitik
patent: 3836158 (1974-09-01), Davison et al.
patent: 3915424 (1975-10-01), LeRouax
patent: 4044988 (1977-08-01), Arzumanov et al.

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