ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,075, issued on Feb. 24, was assigned to Halliburton Energy Services Inc. (Houston).

"Gradational resistivity models with local anisotropy for distance to bed boundary inversion" was invented by Hsu-Hsiang Wu (Houston) and Dagang Wu (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "In general, in one aspect, embodiments relate to a method and/or system for obtaining one or more measurements collected by a downhole tool at a wellbore depth and defining a piecewise-polynomial inversion model describing one or more formation parameters. Systems and methods herein may further be for performing an inversion on the piecewise-polynomial inversion mode...