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:
May. 08, 2018
Filed:
Mar. 27, 2013
Applicant:
Welltec A/s, Allerød, DK;
Inventors:
Jørgen Hallundbæk, Græsted, DK;
Lars Stæhr, Glostrup, DK;
Assignee:
WELLTEC A/S, Allerød, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/127 (2006.01);
U.S. Cl.
CPC ...
E21B 33/127 (2013.01); E21B 33/1277 (2013.01);
Abstract
A downhole annular barrier with an axial extension having an outer surface facing an inner surface of an outer structure has a tubular part, an expandable part, and at least one annular sealing element. The annular sealing element is connected with the expandable part and has an axial length along the axial extension of the downhole annular barrier which is less than 50% of a length of the downhole annular barrier along the axial extension of the downhole annular barrier. The annular sealing element has a spring element.