Presenters
Marvin W. Justus, Amoco Production Company
Hydraulic pumping systems for oil wells have been in existence since 1932. High-pressure power fluid (produced oil or water) is supplied to a
subsurface engine-pump assembly. The power fluid exhausted from the engine is returned to the surface along with produced fluids from the well. The earlier hydraulic systems employed one or more highpressure pumps on the surface to furnish power fluid to one or more wells. Large tanks were used to settle out water and solids from power oil.