ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,086, issued on March 18, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).
"Electric submersible pump" was invented by Robert Adams (Houston) and Max Deffenbaugh (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric submersible pump (ESP) including: a switched reluctance motor (SRM) including stator coils. The number of the stator coils is a multiple of three, surface electronics that drive the SRM, a cable that connects the SRM to the surface electronics. The cable includes conductors in a number equal to the number of the stator coils, each cable includes a push-pull driver that connects the cable to a ground, a DC ...