ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,446, issued on Sept. 2, was assigned to SNF Group (Andrezieux-Boutheon, France).
"Dispersion of water-soluble polymer for hydraulic fracturing" was invented by Cedrick Favero (Andrezieux, France), Bruno Tavernier (Andrezieux, France), Sebastien Coccolo (Andrezieux, France) and Siham Telilel (Andrezieux, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "An injection fluid for hydraulic fracturing including at least one synthetic water-soluble polymer with a weight average molecular weight greater than or equal to 1 million daltons, the fluid being prepared according to a method including preparing, by radical polymerization an invert emulsion inc...