Tester valve with silicone liquid spring

Details Tester valve with silicone liquid spring Tester valve with silicone liquid spring

1982-03-04

1984-04-24

Novosad, Stephen J.

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

166321, 166324, E21B 3406

Patent

active

044442688

ABSTRACT:
A flow tester valve apparatus includes a housing having a flow passage disposed therethrough with a flow valve disposed therein for opening and closing the flow passage. A power mandrel is disposed in the housing and includes a power piston. The power mandrel is operatively associated with the flow valve for moving the flow valve from its closed position to its open position. A power port transmits pressure from a well annulus to a first side of the power piston. A first chamber is disposed in the housing and filled at least partially with a compressible liquid and a second side of the power piston is in fluid communication with the first chamber. A second chamber is disposed in the housing and includes a floating piston which divides the second chamber into a first zone and a second zone. An equalizing port is disposed in the housing for transmitting pressure from the well annulus to the second zone of the second chamber. Pressurizing and depressurizing passages communicate the first chamber with the first zone of the second chamber. A first back pressure check valve and a first flow restrictor are disposed in the pressurizing passage. A second back pressure check valve and a second flow restrictor are disposed in the second passage.

REFERENCES:
patent: Re29562 (1978-03-01), Wray et al.
patent: 2740479 (1956-03-01), Schwegman
patent: 3358755 (1967-12-01), Chisholm
patent: 3431985 (1969-03-01), Bowen
patent: 3646995 (1972-03-01), Manes et al.
patent: 3664415 (1972-05-01), Wray et al.
patent: 3782461 (1974-01-01), Watkins
patent: 3850250 (1974-11-01), Holden et al.
patent: 3856085 (1974-12-01), Holden et al.
patent: 3858649 (1975-01-01), Wray et al.
patent: 3860069 (1975-01-01), Wray et al.
patent: 3915228 (1975-10-01), Giebeler
patent: 3930540 (1976-01-01), Holden et al.
patent: 3964305 (1976-06-01), Wray et al.
patent: 3964544 (1976-06-01), Farley et al.
patent: 3976136 (1976-08-01), Farley et al.
patent: 4047564 (1977-09-01), Nix et al.
patent: 4058165 (1977-11-01), Holden et al.
patent: 4059153 (1977-11-01), Nix et al.
patent: 4063593 (1977-12-01), Jessup
patent: 4076077 (1978-02-01), Nix et al.
patent: 4109724 (1978-08-01), Barrington
patent: 4109725 (1978-08-01), Williamson et al.
patent: 4113012 (1978-09-01), Evans et al.
patent: 4144937 (1979-03-01), Jackson et al.
patent: 4341266 (1982-07-01), Craig
"APR Ball Valve Tester", Halliburton Services Sales and Service Catalog-Number 39, pp. 3310-3311.

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