Actuatable safety valve for wells and flowlines

Details Actuatable safety valve for wells and flowlines Actuatable safety valve for wells and flowlines

1978-11-24

1982-05-25

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Fluid and non-fluid actuators

166321, 166332, 175241, 251 58, F16K 31163, E21B 3310

Patent

active

043313159

ABSTRACT:
An actuatable safety valve for the production tubing of wells and/or fluid flowlines includes a valve element having both linear and rotary components of movement within a valve body and is actuated by a lost-motion rack and pinion gear actuating mechanism. The clam-shell pinion gear is moved linearly within the valve body by a hydraulic sleeve piston actuator for causing control valve movement responsive to hydraulic control of the sleeve piston. The sleeve piston is also responsive to upstream pressure for pressure actuation of the valve to its closed position. The valve element is also mechanically movable to its closed position.

REFERENCES:
patent: Re26149 (1967-01-01), Sizer et al.
patent: 2890859 (1959-06-01), Garrison
patent: 3007524 (1961-11-01), Pistole et al.
patent: 3016955 (1962-01-01), Magill et al.
patent: 3035808 (1962-05-01), Knox
patent: 3065793 (1962-11-01), Page
patent: 3509913 (1970-05-01), Lewis
patent: 3724501 (1973-04-01), Scott

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