ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,737, issued on Dec. 2, was assigned to Welltec Manufacturing Center Completions ApS (Esbjerg N, Denmark).
"Annular barrier and downhole system" was invented by Ricardo Reves Vasques (Esbjerg N, Denmark).
According to the abstract* released by the U.S. Patent & Trademark Office: "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, an...