Method of sealing an annulus surrounding a slotted liner
US6817415B2 · kind B2 · utility
19Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Feb 25, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/13
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of sealing an annulus surrounding a slotted liner in a well includes the steps of generating a magnetic field in the annulus in a region to be sealed; and injecting into the region a sealing fluid including magnetic particles such that the fluid is confined to fill the annulus in the region to be sealed by the interaction of the magnetic particles and the magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.