The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 1992
Filed:
Mar. 01, 1991
John P Davis, Anchorage, AK (US);
Robert S Beeman, Rossier City, LA (US);
Baker Hughes Incorporated, , US;
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).