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:
Dec. 02, 2025
Filed:
Sep. 09, 2024
Welltec Manufacturing Center Completions Aps, Esbjerg N, DK;
Ricardo Reves Vasques, Esbjerg N, DK;
Welltec Manufacturing Center Completions ApS, Esbjerg N, DK;
Abstract
An expandable annular barrier has a tubular metal part for mounting as part of the well tubular metal structure, the tubular metal part having a bore with a bore pressure, and an expandable metal sleeve surrounding the tubular metal part. The annular barrier has a pressure-intensifying unit for increasing the pressure of the fluid from the annulus or the bore before the fluid enters an expandable space, and an activation chamber having a chamber pressure and being fluidly connected to an opening of the pressure-intensifying unit in order to create a pressure difference between the annulus pressure/the bore pressure and the chamber pressure for activating the pressure-intensifying unit to increase the pressure of the fluid. The chamber pressure can be higher or lower than the annulus pressure or the bore pressure.