ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,965, issued on Sept. 15, was assigned to Oil Technology Group LLC (Golden, Colo.).
"Enhanced solvent recovery from tight rock and shale oil wells" was invented by Thomas Gould (Golden, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a method and system for displacing and recovering solvents and oil from at least one shale or extra tight rock well that has been previously treated with a cyclic liquid solvent enhanced oil recovery process. The method of the invention includes at least one cycle of injection of one or more selected, compressed, gaseous displacing agents into the well, during an injection period, to increase...