ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,390, issued on Aug. 12, was assigned to Baker Hughes Oilfield Operations LLC (Houston).

"Permanent well monitoring with acoustically transparent plugs" was invented by Duncan Groves (Houston), John-Peter van Zelm (Calgary, Canada) and Andrew Hawthorn (Missouri City, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for communicating information acoustically through a plug in a temporarily or permanently abandoned well. The disclosed embodiments use an acoustically transmissive well plug, where an acoustic transmitter coupled to a measurement tool below the plug is coupled to the plug In a manner that is intended to maximize th...