US Patent Issued to Schlumberger Technology on March 24 for "Methods for determining positions of fluid interfaces and detecting cement setting in a subterranean wellbore" (Russian, American Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,374, issued on March 24, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Methods for determining positions of fluid interfaces and detecting cement setting in a subterranean wellbore" was invented by Demid Valeryevich Demidov (Novosibirsk, Russia), Roman Vladimirovich Korkin (Sugar Land, Texas), Andrey Vladimirovich Fedorov (Novosibirsk, Russia) and Artem Valeryevich Kabannik (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for locating fluid interfaces in a cased wellbore include generating vibrations in the casing, thereby forming oscillations in the wellbore fluids and the casing. The oscillations are detected ...