US Patent Issued to Schlumberger Technology on Nov. 3 for "Labyrinth protector for electric submersible pumps" (British Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,756, issued on Nov. 3, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Labyrinth protector for electric submersible pumps" was invented by Andrew Henderson (Aberdeen, Great Britain) and Calum Crawford (Aberdeen, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A protector for an electric submersible pump system has a pressure resistant housing and a mandrel sealingly engaged with an interior of the housing to define a fluid tight chamber in an annular space between the housing and the mandrel. The mandrel has a fluid port at one longitudinal end. A labyrinth tube is in sealed fluid communication with the fluid port, an...