Acoustically actuated downhole blowout preventer

Details Acoustically actuated downhole blowout preventer Acoustically actuated downhole blowout preventer

1980-12-24

1983-01-11

Novosad, Stephen J.

Wells

With electrical means

166187, 166188, 166330, 166332, 166373, 175242, E21B 33127, E21B 3406, E21B 3416

Patent

active

043677940

ABSTRACT:
An acoustically operated downhole blowout preventer using a specially configured sleeve valve to inflate a resilient packer for shutting the wellbore annulus.

REFERENCES:
patent: 2874927 (1959-02-01), Conrad
patent: 3134441 (1964-05-01), Barry et al.
patent: 3283823 (1966-11-01), Warrington
patent: 3375874 (1968-04-01), Cherry et al.
patent: 3427651 (1969-02-01), Bielstein et al.
patent: 3606924 (1971-09-01), Malone
patent: 3661205 (1972-05-01), Belorgey
patent: 3941190 (1976-03-01), Conover
patent: 3961308 (1976-06-01), Parker
patent: 4073341 (1978-02-01), Parker

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