US Patent Issued to Saudi Arabian Oil on Dec. 16 for "Acid stimulation of carbonate formation with carbon dioxide-responsive diverting agent" (Saudi Arabia, Chinese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,881, issued on Dec. 16, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Acid stimulation of carbonate formation with carbon dioxide-responsive diverting agent" was invented by Shaohua Chen (Beijing), Limin Xu (Beijing), Bader G. AlHarbi (Dammam, Saudi Arabia), Sharefah A. Alsultan (Dhahran, Saudi Arabia) and Tianping Huang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of acid stimulation that includes: injecting a first acid into a subterranean carbonate formation, the first acid dissolving a first portion of a carbonate material in the subterranean carbonate formation to form a first group of channels in a first z...