Blowout preventer

Details Blowout preventer Blowout preventer

1978-08-18

1980-10-14

Schwadron, Martin P.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Liquid supplied at valve interface

251 1A, 277 72FM, 277127, E21B 3306, F16J 1514

Patent

active

042275431

ABSTRACT:
A ram-type blowout preventer for use in the drilling of onshore and offshore wells, having secondary plastic injection sealing means whereby, on failure of the conventional ram seal, a well closure may still be ensured for protection of human life, equipment and the environment.

REFERENCES:
patent: 1861614 (1932-06-01), Schweitzer
patent: 2322269 (1943-06-01), Allen
patent: 4050700 (1977-09-01), Lifferth

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