Storm choke

Details Storm choke Storm choke

1972-10-03

1977-01-04

Hunter, H. Hampton

Wells

With below and above ground modification

Above ground actuating means for below ground device

E21B 4312

Patent

active

040007804

ABSTRACT:
Accidental blow out of a producing oil or gas well is prevented by means of a storm choke having a valve disc and seat located in a production tubing which extends from the surface to a producing petroleum reservoir. The valve disc is equipped with an operating means which continuously urges the disc toward a position which is opposite from normal with regard to engagement with the seat, i.e. the disc is continuously urged toward the seat if the valve is normally open and away from the seat if it is normally closed. Mechanical means which can be operated from the surface are employed for selectively securing the valve disc in a normally opened or closed position and for releasing the disc for the automatic movement thereof into or out of the valve seat.

REFERENCES:
patent: 1735025 (1929-11-01), Watts
patent: 2831539 (1958-04-01), Endean et al.
patent: 2963089 (1960-12-01), Sizen
patent: 3007524 (1961-11-01), Pistole et al.
patent: 3288221 (1966-11-01), Howard et al.
patent: 3310114 (1967-03-01), Dollison
patent: 3791445 (1974-02-01), True

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