Annular blowout preventer

Details Annular blowout preventer Annular blowout preventer

1985-01-29

1986-04-01

Schwadron, Martin P.

Valves and valve actuation

Blow-out preventers

Deformable annulus

277 31, E21B 3306

Patent

active

045793140

ABSTRACT:
An annular blowout preventer having a body with a central bore therethrough and a packer recess surrounding and opening on said recess, an annular packer which is a complete ring or a split ring in said recess, means for actuating said packer to closed position, an opening through the side of said body into said packer recess of sufficient size to remove said packer therethrough, a plug sealed in said opening and a sleeve around said body to engage the exterior of said plug and retain it in sealing position in said opening.

REFERENCES:
patent: 2085119 (1937-06-01), Penick et al.
patent: 2926031 (1960-02-01), Herr et al.
patent: 3268233 (1966-08-01), Brown
patent: 4461448 (1984-07-01), Huey et al.

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