ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,893, issued on May 27, was assigned to HORISONT ENERGI AS (Norway).
"Methods for installing risers in a fluid injection system" was invented by Stale Brattebo (Tananger, Norway) and Bjorgulf Haukelidsaeter Eidesen (Stavanger, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "A riser to be arranged for injecting fluid from a vessel on a water surface into a subterranean void beneath a seabed is attached to a buoy according to the following method. The remotely operated vehicle is controlled to attach a winch wire to a head end of the riser. The ROV is then controlled to lead the winch wire via the buoy to a winch unit on a seabed below the buoy. ...