ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,646, issued on Oct. 27, was assigned to King Fahd University of Petroleum and Minerals (Dhahran, Saudi Arabia).

"Method of barite scale removal" was invented by Jaber Al Jaberi (Al Khober, Saudi Arabia), Badr Bageri (Dhahran, Saudi Arabia) and Tinku Saikia (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of barite scale removal includes injecting a drilling fluid system containing a nanodot-treated chelating agent into tubing disposed in a wellbore in a subterranean geological formation. A chelating agent in the nanodot-treated chelating agent is diethylenetriamine pentaacetate and/or ethylenediaminetetraacetic acid. Th...