Downhole magnetic retrieval tool

Wells – With electrical means – Magnetic

Reexamination Certificate

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Details

C166S099000

Reexamination Certificate

active

10892644

ABSTRACT:
A tool10for suspending in a well retrieves various metal debris from the well, and includes an elongate tool body12within a plurality of circumferentially shaped slots14. Each slot having a radially outward portion with a circumferential width less than a circumferential width of a radially inward portion. The plurality of magnets16are provided in each slot, and one or more stop rings18retain the plurality of magnets in the slots while allowing for removal of the magnets from the slots. Each of the plurality of magnets16may be substantially enclosed within a non-ferrous carrier26having an outer configuration for fitting within a respective of one of the plurality of slots. According to the method of invention, the magnets are postioned within the slots and are retained within the slots by the one or more stop rings, and the elongate tool body and the plurality of the magnets are suspended in a well.

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SPS AFOS—Wellbore Completion Services, Magno Back Literature, p. 8.
Rattler Tools, Mag-Trap Liertature.

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