Sucker-rod pumps and ESPs together lift the majority of the world's artificially-lifted wells. They are very different machines, and the right choice depends on rate, depth and well profile.
Two very different machines
A rod pump uses a surface beam unit to reciprocate a downhole plunger through a string of rods — simple, robust, and easy to service. An ESP is an all-downhole electric system optimised for volume.
Rate and depth
Rod pumps are efficient at low-to-moderate rates and shallow-to-medium depths. As rate and depth climb, rod loading and stretch become limiting, and the ESP's high-volume capability takes over.
Deviation and well profile
Highly deviated and horizontal wells punish rod pumps with rod-on-tubing wear. ESPs, with no rods, are generally better suited to deviated profiles — though cable protection during run-in becomes critical.
Operating cost and maintenance
Rod pumps are cheap to run and simple to maintain but limited in rate. ESPs lift far more but carry higher power and intervention costs when they fail. Total cost of ownership depends heavily on run life.
Choosing for your field
Low rate, shallow, vertical — rod pump. High rate, deep, deviated — ESP. The best operators match the method to each well rather than standardising on one.
Where ESPs fit your wells, Fiastar supplies the components engineered for reliability. Tell us your well conditions and we'll respond within one business day.