Annulus sliding sleeve valve

Details Annulus sliding sleeve valve Annulus sliding sleeve valve

1989-05-03

1989-07-18

Massie, Jerome W.

Wells

Above ground apparatus

Inner member anchor or seal with valve

166332, E21B 3402

Patent

active

048484571

ABSTRACT:
An annulus valve for a well concentric tubing hanger has features to prevent damage to the seals. The annulus valve has a closure sleeve that when moved to an open position, communicates fluid from an annulus between casing and tubing to a point above the tubing hanger. The lower end of the closure sleeve slides above an annulus port located on the exterior of the tubing hanger. A protector sleeve located below the closure sleeve protects a seal located below the annulus port when the closure sleeve moves to the open position. The protector sleeve is urged upward by a spring into contact with the lower end of the annulus sleeve. The protector sleeve has a stop that prevents further upward movement of the protector sleeve once the upper edge of the protector sleeve reaches the lower edge of the annulus port. This allows the closure sleeve to separate from the annulus sleeve to open the port.

REFERENCES:
patent: 3032111 (1962-05-01), Corley, Jr. et al.
patent: 3750749 (1973-08-01), Giroux
patent: 4109712 (1978-08-01), Regan
patent: 4125155 (1978-11-01), Brock, Jr.
patent: 4333526 (1982-06-01), Watkins

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