ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,875, issued on Aug. 5, was assigned to RESMAN AS (Trondheim, Norway).
"Targeted tracer injection with online sensor" was invented by Anton Kulyakhtin (Trondheim, Norway), Christian Andresen (Vikhammer, Norway) and Thomas Sperle (Jakobsli, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention is a method, a system, tools for use by the system, and an interpretation method for injecting and detecting tracers and conducting flow characterizing of a petroleum well. The method describes monitoring of travel time and slip velocity between two/three different phases (oil/water and possibly gas) in the well. The travel time and slip velocity ar...