Emergency blowout preventer (BOP) closing system

Details Emergency blowout preventer (BOP) closing system Emergency blowout preventer (BOP) closing system

1979-07-13

1982-03-02

Chambers, A. Michael

Valves and valve actuation

Blow-out preventers

251 1A, 91 33, E21B 3306, F15B 1304

Patent

active

043175570

ABSTRACT:
A blowout preventer control system for use in well operations includes a BOP having at least one opening chamber and at least one closing chamber, and an operating power fluid source connected to the BOP opening and closing chambers by an opening conduit and a closing conduit, respectively. A valve controlled conduit is connected to the opening conduit to ensure drainage of power fluid from the opening chamber of the BOP. A three-way shuttle valve is connected into the closing conduit close to the BOP. The shuttle valve is provided with an inlet which is connected to the closing conduit and another inlet which is connected by a conduit to an independent BOP operating power fluid source. An outlet of the shuttle valve is connected to the closing chamber of the BOP.

REFERENCES:
patent: 2300694 (1942-11-01), Overbeke
patent: 2618243 (1952-11-01), Treganowan
patent: 3044481 (1962-07-01), Regan
patent: 3075737 (1963-01-01), Cartalupo et al.
patent: 3091256 (1963-05-01), Becker
patent: 3225831 (1965-12-01), Knox
patent: 3530891 (1970-09-01), Walland et al.
patent: 3695349 (1972-10-01), Murman et al.
patent: 3750694 (1973-08-01), Fawkes
patent: 3782250 (1974-01-01), Kiszewski
patent: 3827668 (1974-08-01), DeVries et al.
patent: 4065094 (1977-12-01), Adams
patent: 4071085 (1978-01-01), Grable et al.

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