ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,090, issued on April 21, was assigned to SCHLUMBERGER TECHNOLOGY Corp. (Sugar Land, Texas).

"Downhole sealing mechanisms and methods of use thereof" was invented by Clement Laplane (Houston), Sai Aung Thu Win Tin (Kuala Lumpur, Malaysia), Hai Liu (Paris) and Alexander Rudnik (Katy, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and system for sealing a perforated tubular is provided. The method includes disposing a meltable alloy in a wellbore including a perforated tubular disposed therein at a desired seal location, the wellbore and the perforated tubular defining an annulus and applying a heating gradient to the meltable alloy suc...