ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,056, issued on Feb. 24, was assigned to Equinor Energy AS (Stavanger, Norway).
"Tie-in of subsea pipeline" was invented by Kjell Einar Ellingsen (Tananger, Norway), Bjorgulf Haukelidsaeter Eidesen (Stavanger, Norway) and Kristoffer Dahl (Stavanger, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of installing a header pipe joint 1 at a subsea structure 5 is provided, comprising providing a header pipe joint 1 having at least one valve 2 installed therein and connecting the header pipe joint 1 inline of a spool 15 or pipeline 18 prior to lowering the header pipe joint 1 to the subsea structure 5. The header pipe joint 1 is then lowered...