ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,081, issued on July 21, was assigned to Halliburton Energy Services Inc. (Houston).
"Apparatus for centralization of downhole milling bit" was invented by Dezhi Zheng (Houston), Rodney Marlow (Spring, Texas), Pramod Chamarthy (Carrollton, Texas) and Mark Marcos Pina (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the subject technology relate to apparatus and methods for removing obstructions that may block a wellbore passageway. Such obstructions may have been caused by the occurrence of an undesired event. Examples of such undesired events include debris blocking a tube or casing or the failure of a valve that controllably links...