The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2020
Filed:
Sep. 12, 2012
Jørgen Hallundbæk, Græsted, DK;
Ricardo Reves Vasques, Holte, DK;
Jørgen Hallundbæk, Græsted, DK;
Ricardo Reves Vasques, Holte, DK;
Welltec Oilfield Solutions AG, Zug, CH;
Abstract
An annular barrier is expandable in an annulus between a well tubular structure and an inside wall of a borehole downhole for providing zone isolation between a first zone and a second zone of the borehole. The annular barrier has a tubular part for mounting as part of the well tubular structure, an expandable metal sleeve surrounding the tubular part and having an inner face facing the tubular part and an outer face facing towards the inside wall of the borehole, each end of the expandable metal sleeve being connected with a connection part which is connected with the tubular part, a space between the inner face of the expandable metal sleeve and the tubular part, and an expansion opening in the tubular part through which fluid may enter into the space in order to expand the expandable metal sleeve. The annular barrier also has a first safety metal sleeve surrounding the tubular part and abutting the expandable metal sleeve and the first safety metal sleeve having a first inner face abutting the face of the expandable metal sleeve, each end of the first safety metal sleeve being connected with the connection part which is connected with the tubular part.