Wells – Packers or plugs – With expanding anchor
Patent
1984-09-27
1986-05-13
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166121, 166123, 166139, 277124, 277236, E21B 2300, E21B 2302, E21B 3300
Patent
active
045880301
ABSTRACT:
A well tool, for setting in a nipple having a locking notch, including a body with initially retracted first and second locking dogs with a threaded actuator for moving the first and second dogs axially relative to each other and into engagement with the top and bottom of the locking notch for preventing axial movement of the body in the nipple. A plurality of metal cup sealing rings positioned about the body and expandable into a sealing relationship between the body and the nipple by a piston. A tapered expander extends into each of the sealing cups and at least one of the rings is positioned with the cups directed oppositely to the cup in another ring for holding pressure in both directions. The cup rings are shaped for setting in a sequential order starting with the rings furthest from the piston. A protector sleeve is releasably connected to the body and initially encloses the locking dogs and the sealing rings.
REFERENCES:
patent: 3180419 (1965-04-01), Cochran et al.
patent: 3378269 (1968-04-01), Castor
patent: 4127168 (1978-11-01), Hanson et al.
patent: 4131287 (1978-12-01), Gunderson et al.
patent: 4254829 (1981-03-01), Watkins
patent: 4399873 (1983-08-01), Lindsey, Jr.
patent: 4473231 (1984-09-01), Tilton et al.
Bagnell David J.
Camco Incorporated
Novosad Stephen J.
LandOfFree
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