US Patent Issued to Baker Hughes Oilfield Operations on Nov. 25 for "Electrical submersible pump with single direction lubricant flow" (Oklahoma Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,498, issued on Nov. 25, was assigned to Baker Hughes Oilfield Operations LLC (Houston).

"Electrical submersible pump with single direction lubricant flow" was invented by Steven Alan Howell (Oklahoma City) and David Tanner (Broken Arrow, Okla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrical submersible pumping system ("ESP") for use in a wellbore includes an electrical motor, a pump, a shaft coupled between the motor and pump, and a lubricant pump for circulating lubricant within the ESP. The lubricant pump includes a diffuser and an impeller that mounts onto and rotates with shaft rotation. A portion of the impeller has a frusto-conica...