US Patent Issued to Chevron U.S.A. on July 8 for "High stability polymer compositions for enhanced oil recovery applications" (Georgia Inventors)

ALEXANDRIA, Va., July 9 -- United States Patent no. 12,351,757, issued on July 8, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).

"High stability polymer compositions for enhanced oil recovery applications" was invented by Hong Yang (Atlanta) and Frances Troy (Marietta, Ga.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are methods of using liquid polymer and inverse emulsion compositions comprising one or more hydrophobic liquids having a boiling point at least about 100deg C.; one or more acrylamide-(co)polymers; one or more emulsifier surfactants; one or more inverting surfactants; and one or more stabilizing agents (e.g., one or more siloxane polyether compounds, one or more poly(alkyl...