Packer retrieving mill with debris removal

Details Packer retrieving mill with debris removal Packer retrieving mill with debris removal

2011-01-04

2011-01-04

Stephenson, Daniel P (Department: 3676)

Wells

With junk retrieving means

C166S162000, C166S316000, C166S377000, C166S055600, C166S055700, C294S086240, C294S086100

Reexamination Certificate

active

07861772

ABSTRACT:
A mill is configured to have large debris passages disposed among a series of radially extending blades. The mill center is adapted to accept a retention nut that supports a tool that secures the downhole tool being milled out, such as a packer. Reverse flow takes cuttings into the large open area between the blades to pass up in an annular space around a support for the retention nut. The passage then opens up to a maximum dimension leaving only the tubular wall needed for structural strength to support the mill and conduct cuttings into a debris removal tool.

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