US Patent Issued to Saudi Arabian Oil, RMSPumpTools on Nov. 25 for "Controlling downhole electrical submersible pump based on sensing rotor position" (British Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,391, issued on Nov. 25, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia) and RMSPumpTools (Aberdeenshire, Great Britain).

"Controlling downhole electrical submersible pump based on sensing rotor position" was invented by Christopher Wrighton (Inverurie, Great Britain), Donald Jamieson (Inverurie, Great Britain) and Sakethraman Mahalingam (Aberdeenshire, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ESP assembly includes a motor having a stator, a rotor, a drive shaft, and an asymmetric magnetic ring mounted to an end of the drive shaft. Electricity for driving the motor is provided by a power source on surface and deli...