Full bore sampler valve

Details Full bore sampler valve Full bore sampler valve

1985-04-29

1986-03-18

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Fluid operated

166330, 166332, 13761411, 13761421, E21B 3410, E21B 4312

Patent

active

045762341

ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a full-bore sampler and safety valve apparatus includes a housing having a hydraulically operable mandrel assembly slidably arranged therein, axially spaced, normally open ball valve elements mounted by trunnions on said mandrel assembly for rotation from positions simultaneously opening a flow passage through said mandrel assembly in one longitudinal position of said mandrel assembly to positions simultaneously closing said flow passage in another longitudinal position of said mandrel assembly, a first actuator member fixed with respect to said housing for applying closing torque to one ball valve as said mandrel assembly is shifted toward said other position, and a second actuator member movable relative to said housing and said mandrel assembly and operable in response to rotation of said one ball valve for applying closing torque to the other of said ball valves.

REFERENCES:
patent: 4063593 (1977-12-01), Jessup
patent: 4260021 (1981-04-01), Mott
patent: 4317490 (1982-03-01), Milberger

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