ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,674, issued on Sept. 9, was assigned to Interwell Norway AS (Hafrsfjord, Norway).
"Downhole millable permanent plug and method for setting a downhole millable permanent plug" was invented by Espen Hiorth (Trondheim, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole millable permanent plug, which permanently seals a downhole well, includes a mandrel, first and second sealing elements, a metal body, and a setting system. The mandrel has a longitudinal axis. The first sealing element is provided radially outside of the mandrel. The second sealing element is provided radially outside of the mandrel at a distance from the first sealing el...