Annular barrier with external seal
US9206666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2012 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Dec 25, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/103
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to an annular barrier to be expanded in an annulus between a well tubular structure and an inside wall of a borehole downhole, comprising a tubular part for mounting as part of the well tubular structure, said tubular part having a longitudinal axis, an expandable sleeve surrounding the tubular part and having an outer face, each end of the expandable sleeve being fastened by means of a connection part to the tubular part, and an aperture in the expandable sleeve or the connection part, wherein a first connection and a second connection are fastened on the outer face of the expandable sleeve, and a safety sleeve having an opening is fastened to the expandable sleeve by means of the first and the second connections, the safety sleeve and the expandable sleeve defining a space being in fluid communication with the annulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.