Paper: Closed Power Oil Systems For Hydraulic Bottom Hole Pumps

Power oil for hydraulic pumping systems must be clean. In some instances it is difficult and costly to clean up the crude oil. A closed power oil system offers a means of maintaining high quality power oil, because the power oil does not come into contact with produced fluid. This paper discusses various types of closed power oil systems, the conditions where the closed power oil system will most likely have an advantage over the open system, and compares the costs of the open vs. the closed power oil systems.