Ram-type blowout preventer

Details Ram-type blowout preventer Ram-type blowout preventer

1974-05-01

1976-03-30

Schwadron, Martin P.

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

251 1B, 277235R, E21B 2900

Patent

active

039468062

ABSTRACT:
There is disclosed a ram-type blowout preventer for shearing a pipe which may be disposed within its bore and then sealing across the bore.

REFERENCES:
patent: 2246709 (1941-06-01), Allen
patent: 2919111 (1959-12-01), Nicolson
patent: 2969838 (1961-01-01), Wilde
patent: 3102709 (1963-09-01), Allen
patent: 3399728 (1968-09-01), Taylor
patent: 3399901 (1968-09-01), Crow et al.
patent: 3561526 (1971-02-01), Williams et al.
patent: 3736982 (1973-06-01), Vujasinovic

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