Subsurface solenoid latched safety valve

Details Subsurface solenoid latched safety valve Subsurface solenoid latched safety valve

1985-02-15

1986-04-01

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

166 665, 166 664, 25112921, 137629, E21B 3400, E21B 3406

Patent

active

045791775

ABSTRACT:
A subsurface solenoid well safety valve which is locked in the open position, after being opened mechanically, for preventing the valve from closing. A valve closure member is controlled by a tubular member which is mechanically moved downwardly to open the valve. An armature movable in the housing is actuated by a solenoid coil for locking the tubular member in the open position to the valve housing. Deenergization of the coil releases the armature and the lock and allows the tubular member to be biased to the open position.

REFERENCES:
patent: Re30110 (1970-10-01), Huebsch et al.
patent: 3731742 (1973-05-01), Sizer et al.
patent: 3999574 (1976-12-01), Ott
patent: 4002202 (1977-01-01), Huebsch et al.
patent: 4161215 (1979-07-01), Bourne, Jr. et al.
patent: 4191248 (1980-03-01), Huebsch et al.

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