Mechanism for activating a plurality of downhole devices
US8297367B2 · kind B2 · utility
61Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Feb 10, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mechanism for selectively activating a plurality of downhole pathways including a) a valve having: i) a sleeve coupled for movement between an open and normally closed position; and ii) a valve magnet set mounted to the sleeve; and b) a dart for pumping in hole including a dart magnet set matched to the valve magnet set such that the dart couples to the valve when in close proximity and, in turn, the sleeve moves from the closed position to the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.