Wells – Processes – Disassembling well part
Patent
1991-03-01
1992-06-23
Neuder, William P.
Wells
Processes
Disassembling well part
166 557, 294 8634, E21B 1064, E21B 2900
Patent
active
051234890
ABSTRACT:
A milling and retrieval tool (10) to remove a packer (14) from a casing (12), and a method to release the tool (10) from the packer (14) for separate removal from the casing (10). Tool (10) includes a sleeve (58) having resilient fingers (60) which spring inwardly against a reduced diameter mandrel portion (42) in the upward position of the sleeve (58) to permit passage of the sleeve (58) through the packer bore (15) for release of the tool (10) from the packer (14). The sleeve (58) is moved upwardly along the mandrel (11) by pressurized drilling fluid discharged from a lower opening (32) of a bullnose section (26). A shear ring (50) is provided to permit downward movement of the sleeve (58) adjacent a reduced diameter portion (30) of the bullnose section (26) for release of the tool (10) from the packer (14) upon the reaching of a predetermined jarring or bumping action of the sleeve (58) against the packer shoulder (18).
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Beeman Robert S.
Davis John P.
Baker Hughes Incorporated
Neuder William P.
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