High temperature subsurface safety valve

Details High temperature subsurface safety valve High temperature subsurface safety valve

1986-06-09

1987-06-02

Leppink, James A.

Wells

Valves, closures or changeable restrictors

Fluid operated

166332, 251 62, E21B 4312

Patent

active

046695478

ABSTRACT:
A subsurface safety valve for controlling the fluid flow through a well conduit having an improved fluid actuator with a ceramic piston connected to and actuating the valve and movable in a ceramic sleeve. The actuator metal valve seats and metal valve elements for seating on the valve seats for providing positive seals.

REFERENCES:
patent: 2862775 (1958-12-01), Kupiec
patent: 3662986 (1972-05-01), Domulewicz, Sr.
patent: 4049052 (1977-09-01), Arendt
patent: 4119146 (1978-10-01), Taylor
patent: 4161219 (1979-07-01), Pringle
patent: 4215748 (1980-08-01), Pace et al.
patent: 4252197 (1981-02-01), Pringle
patent: 4452310 (1984-06-01), Pringle et al.
patent: 4503913 (1985-03-01), Carmody
patent: 4527630 (1985-07-01), Pringle

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