ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,720, issued on Dec. 2, was assigned to Halliburton Energy Services Inc. (Houston).

"Motor cooling and debris management during milling" was invented by Pramod Chamarthy (Carrollton, Texas), Rodney Marlow (Houston) and Dezhi Zheng (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "In the drilling of oil and gas wells, some fluid isolation valves may be stuck in a closed position and may need to be milled out. Provided are methods and systems to dissipate heat and remove cuttings and shavings generated during milling of these fluid isolation barrier. The methods may include conveying a milling tool into a borehole, wherein the milling tool compris...