Wireline valve inner seal

Details Wireline valve inner seal Wireline valve inner seal

1983-05-31

1985-03-26

Scott, Samuel

Valves and valve actuation

Blow-out preventers

251 1R, 277166, 2771675, E21B 3306

Patent

active

045068585

ABSTRACT:
Disclosed is a ram assembly for a wireline blowout preventer, not requiring wireline guides, and having an improved inner seal and outer seal. The improved inner seal utilizes molded in layered fabric reinforcement and a unique retainer plate configuration to enable a closed blowout preventer or preventer closed on wireline to seal extremely high pressures with less closing force and no damage to the wireline.

REFERENCES:
patent: 778591 (1904-12-01), Layne
patent: 1641921 (1927-09-01), Crowell
patent: 2194259 (1940-03-01), Allen
patent: 2746710 (1956-05-01), Jones
patent: 4214605 (1980-07-01), Hardgrave
patent: 4416441 (1983-11-01), Van Winkle
patent: 4428592 (1984-01-01), Shaffer

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