Wells – Processes – Placing or shifting well part
Patent
1990-05-04
1991-03-05
Neuder, William P.
Wells
Processes
Placing or shifting well part
166 665, E21B 2302
Patent
active
049970437
ABSTRACT:
A landing nipple for use in a well tubing for receiving a well tool. A magnetic armature is utilized in the nipple actuated by a magnet or solenoid coil for extending retractable no-go shoulders and/or locking dogs into the bore of the nipple for coacting with a well tool.
REFERENCES:
patent: 3105548 (1963-10-01), Ownby
patent: 3858650 (1975-01-01), Mott
patent: 4058166 (1977-11-01), Crickmer
patent: 4161219 (1979-07-01), Pringle
patent: 4579177 (1986-04-01), Going, III
Camco International Inc.
Neuder William P.
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