ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,959, issued on Dec. 30, was assigned to Altus Intervention (Technologies) AS (Stavanger, Norway).
"System and method for permanent plugging of a petroleum well" was invented by Lasse Haugland (Bryne, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "A valve for a landing packer in a petroleum well. The landing packer is provided with a passage between an upper face and a lower face, and the valve is adapted to close the passage. The valve comprises a biased valve body adapted to be displaced between a first position and a second position. The valve body is adapted to receive a tool from above. The valve body is adapted to be displaced from a fir...