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

041322665

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 the blowout preventer, one of the rams having a shoulder spaced from the shearing plane of the blades, a face seal mounted in a recess in the ram having the shoulder and positioned so that the blade on the other ram bends the cut pipe around the shoulder and then seals against said face seal, and means for preventing metal parts from collecting in front of 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
patent: 3841347 (1974-10-01), Kushida
patent: 3872878 (1975-03-01), Kozel

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