ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,654, issued on Sept. 29, was assigned to National Technology & Engineering Solutions of Sandia LLC (Albuquerque, N.M.).

"Modular anti-rotation drilling systems and methods actuated by fluid pressure" was invented by Jiann-Cherng Su (Albuquerque, N.M.), Stephen Buerger (Albuquerque, N.M.), Anirban Mazumdar (Atlanta) and Adam Foris (Albuquerque, N.M.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A modular anti-rotation, centering and notching device for preventing off-axis movement of a drillstring with respect to the central axis of a drilling tool in a borehole and for producing a notch in a borehole surface. The device includes an upper fixture p...