The United States R & M Power Systems has developed a new type of variable speed drive, which can digitally control oil production, but also on the screw pump system for control and testing. It combines torque and speed control into a stand-alone software, which is the key to achieving the highest throughput and highest power utilization in the well, as well as protecting the screw pump system. Dedicated software incorporates all usage patterns of rods, casing strings, formations and pumps. This sensorless control relies on continuous supply of torque, speed, pump efficiency, fluid volume and estimated bottom hole pressure feedback to protect downhole equipment and maximize well production. It can also be manually adjusted with manual and system software so that the fluid level is above the pump inlet. Its excellent pumping control capability allows the well to produce the highest amount of oil under its inflow performance. It also monitors pump displacement and provides cumulative production data, and its docking software is also remotely controllable over the network.
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