Pipe shearing ram assembly for blowout preventer

Details Pipe shearing ram assembly for blowout preventer Pipe shearing ram assembly for blowout preventer

1978-04-06

1979-01-02

Purser, Ernest R.

Wells

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

With disparate below ground feature

251 1A, 137242, E21B 2900

Patent

active

041322657

ABSTRACT:
A shear ram assembly for a blowout preventer having a pair of rams with opposed shear blades, means for moving the shear blades across the pipe opening of a blowout preventer, a face seal on one of said rams and a shoulder above said face seal, the forward face of the shear blade of the other ram coacting with the shoulder to move a cut pipe section out of its path and also being shaped to enter into sealing engagement with the face seal, and a debris drain through the blade of said one ram to allow debris to move out of the path of the sealing face of the shear blade of the other ram toward the face seal.

REFERENCES:
patent: 2238357 (1941-04-01), Allen
patent: 2919111 (1959-12-01), Nicolson
patent: 2969838 (1961-01-01), Wilde
patent: 3379255 (1968-04-01), Burns, Jr. et al.
patent: 3561526 (1971-02-01), Meynier
patent: 3736982 (1973-06-01), Vujasinovic
patent: 3817326 (1974-06-01), Meynier
patent: 3841347 (1974-10-01), Kushida
patent: 3938541 (1976-02-01), Polacheck et al.

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