Device for controlling a safety valve disposed below an activati

Details Device for controlling a safety valve disposed below an activati Device for controlling a safety valve disposed below an activati

1982-12-01

1985-05-21

Novosad, Stephen J.

Wells

With eduction pump or plunger

Having sediment trap or deflector

166321, 166332, 166106, E21B 3408, E21B 4312

Patent

active

045180369

ABSTRACT:
In a hydrocarbon production well in which the effluent is activated by an activation pump installed in a production pipe, a safety valve is disposed in the production pipe below the pump, the safety valve being operated by lowering of an operating member by a controlling device. The controlling device comprises a piston and cylinder system, and connection means connecting the piston to the operating member during the downward movement of the piston. The cylinder and piston system is provided at the level of the pump, and is advantageously constituted by the production pipe and pump respectively, so that pressurized fluid present at the level of the pump will cause downward movement of the piston.

REFERENCES:
patent: 1062749 (1913-05-01), Townsend
patent: 1493267 (1923-01-01), Kauffman
patent: 1674815 (1928-06-01), Barnhart
patent: 2971581 (1961-02-01), Reglin
patent: 3040811 (1962-06-01), Pistole et al.
patent: 3045760 (1962-07-01), Moore, Jr.
patent: 3092135 (1963-06-01), Brown et al.
patent: 3614984 (1971-10-01), Schexnaider
patent: 3799204 (1974-03-01), Watkins et al.
patent: 4009756 (1977-03-01), Zehren
patent: 4134454 (1979-01-01), Taylor
patent: 4293283 (1981-10-01), Roeder
patent: 4474234 (1984-10-01), Lefebvre et al.

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