ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,630, issued on Aug. 26.
"Crude oil hydraulic lift" was invented by George N. Mitri (Brenham, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A crude oil lifting system that uses pneumatic and/or hydraulic sources to control vertical operations of a downhole pipe. The lifting system may have a plurality of lifting actuators, a plurality of alignment actuators, and a guiding system. A plurality of hydraulic cylinders may be coupled to an attachment platform that is coupled to a sucker rod. Pressurization and de-pressurization of the hydraulic cylinders causes repeated vertical movement of the sucker rod, thereby retrieving oil or gas from a downh...