ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,493, issued on Jan. 28, was assigned to Halliburton Energy Services Inc. (Houston).

"Multi-fiber sensing topology for subsea wells" was invented by Glenn Andrew Wilson (Houston), Sigurd Moe (Kongsberg, Norway), Andreas Ellmauthaler (Houston) and James Dupree (Humble, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fiber optic sensing (FOS) system and method. The system may include one or more interrogator units and a proximal wavelength division multiplexer (WDM) and a distal WDM optically connectable to the one or more interrogator units, an upgoing transmission fiber, a down-going transmission fiber, and one or more downhole sensing fibers....