US Patent Issued to OIL STATES ENERGY SERVICES on June 24 for "Mag sense tool" (Texas Inventors)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,140, issued on June 24, was assigned to OIL STATES ENERGY SERVICES LLC (Houston).

"Mag sense tool" was invented by Jimmy Livingston (Manvel, Texas) and Phillip R. Phelps (Fort Worth, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A magnetic sensing tool ("MST") uses differentials in induced voltage to detect the approximate location of a ferric target tool within surface pressure control equipment associated with a wellhead. The MST comprises a transmitter coil and two receiver coils configured such that a voltage generated in the transmitter coil induces a baseline voltage, and a baseline voltage differential, in the receiver coils when no ta...