Magnetic retrieval apparatus and method for retaining magnets on a downhole magnetic retrieval apparatus
US8678091B2 · kind B2 · utility
7Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2010 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Oct 23, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Magnetic retrieval tools for use in a wellbore or other tubular member to remove metallic debris. A magnetic retrieval tool includes a tool body having a central shaft with a plurality of ribs that project radially outwardly therefrom. The ribs present lateral sides that have recesses formed therein. Magnet bars are retained within the recesses by wedge members and retaining rings. The magnet bars include a hollow protective housing that encloses a plurality of magnets. Retaining plugs are used to secure the magnets within the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.