Magnetic slip retention for downhole tool
US8069918B2 · kind B2 · utility
5Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2009 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Jan 13, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool, such as a packer or liner hanger, has a mandrel on which slips are disposed for engaging a surrounding tubular downhole. When the tool is being run in or out of the hole, at least one magnetic component magnetically retains the slip adjacent the mandrel so the slip can be held away from the surrounding tubular. When the tool is set downhole, the initial magnetic retention can be broken, and the slips can be moved away from the mandrel to engage the surface of the surrounding tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.