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, E21B 2900

Patent

active

041322673

ABSTRACT:
A shear ram assembly for a blowout preventer having a pair of opposed shear blades, means for moving the shear blades across the pipe opening of the blowout preventer, a shoulder on one ram spaced below the shearing plane of the blades, a face seal mounted in a recess above said shoulder and below said shearing plane, the leading face of the lower blade coacting with said shoulder to bend a sheared pipe section remaining in its path on said shoulder so that there is no pipe or debris between said leading face and said face seal.

REFERENCES:
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), Williams, Jr.
patent: 3736982 (1973-06-01), Vujasinovic
patent: 3817326 (1974-06-01), Meynier

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