ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,990, issued on July 29, was assigned to SCHLUMBERGER TECHNOLOGY Corp. (Sugar Land, Texas).
"Downhole flowmeter" was invented by Harold Pfutzner (Richmond, Texas) and Mohammed Badri (Al-Khobar, Saudi Arabia).
According to the abstract* released by the U.S. Patent & Trademark Office: "An intelligent completion module includes a flowmeter that uses one or more electromagnetic acoustic transducer (EMAT) sensors and a flow control valve. The flow rate and the speed of sound in the production fluid from a production zone is measured and used to make reservoir management decisions. The flowmeter includes at least two EMAT rings, including one or more EMAT sensors in a circular distribut...