Device for annular well isolation
US6626240B1 · kind B1 · utility
4Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Aug 16, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Device for annular isolation in oil/gas wells comprising a production tube, the production tube comprises coaxially positioned, cylindrical sleeve (5) having in one end an at least partially radially directed opening slot (2), said sleeve including a cylindric sealing crown (1) coupled in one end to a release mechanism (3, 4) adapted to push the sealing crown (1) out through the opening, said sealing crown (1) in its other end being expandable in the tangential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.