ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,845, issued on July 1, was assigned to Halliburton Energy Services Inc. (Houston).

"Fluid phase discrimination and acoustic velocity estimation by measuring guided-wave speed" was invented by Yadong Wang (Singapore), Jichun Sun (Singapore), Ruijia Wang (Singapore) and Xiang Wu (Singapore).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for identifying guided waves in a measurement set. The method may comprise disposing an acoustic logging tool into a wellbore, performing a measurement operation with the acoustic logging too in the wellbore to form a data set which comprises one or more guided waves, measuring a speed of the one or more guided ...