Patent ID: 7219724
Filing Date: 2007-05-22
Classification: B08B,E21B

Abstract:
1. A tool for suspending in a well to retrieve ferrous metal debris from the well, the tool comprising: an elongate tool body having an upper end configured for suspending the tool body in the well; the tool body having a plurality of circumferentially arranged slots, each slot having a radially outward portion with a circumferential width less than a circumferential width of a radially inward portion; a plurality of magnet carriers each having an outer configuration for slidedly fitting within a respective one of the plurality of slots; a plurality of magnets supported on each magnet carrier; and one or more stop rings for axially retaining the plurality of magnets in the slots, each of the one or more stop rings being removable from the tool body and thereby allowing removal of the plurality of magnets from the plurality of slots.