ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,497, issued on Dec. 16, was assigned to Halliburton Energy Services Inc. (Houston).

"ESP rotor assemblies configured for thermal expansion compensation" was invented by Andras Bencze (Frimley, Great Britain) and Michael Rimmer (Frimley, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed rotor assemblies can be configured to address differential thermal expansion in the rotor assembly during ESP motor use. Some rotor assembly embodiments can employ an improved stacking technique to minimize differential thermal expansion issues by removing certain components from the axial stack of supporting components of the rotor assembly. Alte...