ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,892, issued on May 27, was assigned to HORISONT ENERGI AS (Norway).

"Fluid injection system and related methods" 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: "Obstructing fluid plugs are removed from a base section of a riser, which base section extends between a receiving end connected to an upright section of the riser and an emitting end of the riser connected to a subsea template located on a seabed over a drill hole to a subterranean void into which fluid received via the riser is to be injected from the subsea template (120). The obstructi...