ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,930, issued on Oct. 14, was assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS (Dhahran, Saudi Arabia).

"Wellbore and geologic formation desulfurization process" was invented by Sagheer A. Onaizi (Dhahran, Saudi Arabia) and Mustapha Iddrisu (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of removing hydrogen sulfide from a subterranean geological formation includes injecting a drilling fluid suspension in the subterranean geological formation. The drilling fluid suspension has a pH of 10 or more and includes a layered triple hydroxide material, including manganese, cobalt, and iron, in an amount of 0.01 to 0.5 ...