Blowout preventer shearing and sealing rams

Details Blowout preventer shearing and sealing rams Blowout preventer shearing and sealing rams

1979-05-01

1980-12-23

Novosad, Stephen J.

Wells

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

With disparate below ground feature

251 1A, E21B 2900

Patent

active

042405033

ABSTRACT:
Rams are provided in a blowout preventer to shear the drill string and seal the well bore should the need arise. Two shearing rams have cutting blades which shear the drill pipe. A seal member is mounted behind one of the cutting blades and is adapted to move into sealing position after shearing has occurred. Elastsomer flow into areas where there has been damage to the seal member is permitted by the design of the seal member.

REFERENCES:
patent: 2919111 (1959-12-01), Nicolson
patent: 2969838 (1961-01-01), Wilde
patent: 3561526 (1971-02-01), Williams, Jr. et al.
patent: 3590920 (1971-07-01), Orund et al.
patent: 3736982 (1973-06-01), Vujasinovic
patent: 3766978 (1973-10-01), Orund et al.
patent: 3817326 (1974-06-01), Meynier
patent: 3946806 (1976-03-01), Meynier
patent: 4132265 (1979-01-01), Williams, Jr.
patent: 4132266 (1979-01-01), Randall
patent: 4132267 (1979-01-01), Jones

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