Blowout preventer locking apparatus and method

Details Blowout preventer locking apparatus and method Blowout preventer locking apparatus and method

1974-05-03

1976-03-02

Schwadron, Martin P.

Fluid handling

Processes

92 18, 92 24, 188 67, 251 1A, 251 94, E21B 3306

Patent

active

039411419

ABSTRACT:
Locking apparatus for a ram type blowout preventer having a housing with a passageway through which a tubular member may pass; rams movable between a non-sealing position in the housing, in which the passageway is open, and a sealing position in which the passageway is sealingly closed; and an operator assembly for moving the rams between the non-sealing and sealing positions. The locking apparatus may comprise: at least one rod connected to the operator assembly reciprocable between first and second terminal positions in response to movement of the rams between their non-sealing and sealing positions, respectively; and locking means engageable with the rod when in its second terminal position to lock the rams in their sealing positions. A method of operating such a ram type blowout preventer is disclosed also.

REFERENCES:
patent: 851277 (1907-04-01), Clark
patent: 1836506 (1931-12-01), Rasmussen et al.
patent: 3051433 (1962-08-01), Dale et al.
patent: 3203513 (1965-08-01), Allen
patent: 3208357 (1965-09-01), Allen et al.
patent: 3242826 (1966-03-01), Smith

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