US Patent Issued to Saudi Arabian Oil on April 22 for "Determining hydrocarbon production from multiple subterranean formations" (Saudi Arabia, Russian Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,572, issued on April 22, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Determining hydrocarbon production from multiple subterranean formations" was invented by Qasim Sahu (Sayhat, Saudi Arabia), Rajendra Arunkumar Kalgaonkar (Dhahran, Saudi Arabia) and Vera Solovyeva (Moscow).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and a method for determining hydrocarbon production from multiple subterranean formations. Different nanotag tracers are sequentially injected into subterranean production zones fluidly coupled to a wellbore extending from a surface of the Earth through the subterranean production zones. The respective nan...