ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,382, issued on Jan. 20, was assigned to OneSubsea IP UK Ltd. (London).
"High viscosity stage" was invented by Kean Wee Cheah (Singapore) and David Milton Eslinger (Bartlesville, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric submersible pump stage optimized for viscous fluid is provided. The stage can include a diffuser having a curved break water area. The stage can include an impeller having a cut back shroud and/or hub."
The patent was filed on Sept. 23, 2022, under Application No. 18/689,754.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2...