ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,543, issued on Nov. 4.
"Downhole flat-jack in-situ stress tool (DFISS) for direct in-situ stress measurement in deep wells" was invented by Hamed Soroush (Brookhaven, Ga.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tool (100) for measuring direct in-situ stress in rock (10) surrounding a borehole (12) includes: a slot cutting system (136), a flat-jack stress measurement device (134), a hydraulic system (124), and a sensor (514). The slot cutting system (136) cuts a slot (502) having an original width in the rock (10) surrounding the borehole (12). The flat-jack stress measurement device (134) fits into the slot (502). The hydraulic system (124) ...