Annular barrier with pressure amplification
US9725980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2012 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | May 30, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1243
- 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 for providing zone isolation between a first zone and a second zone of the borehole, comprising a tubular part for mounting as part of the well tubular structure and having an expansion opening, an expandable sleeve surrounding the tubular part, each end of the expandable sleeve being connected with the tubular part, and an annular barrier space between the tubular part and the expandable sleeve, wherein the annular barrier further comprises a pressure intensifying means having an inlet in a first end in fluid communication with the expansion opening and having an outlet in a second end in fluid communication with the annular barrier space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.