ELKAM manufactures and supplies specialized pumps for high rate wells. Dual operation pump: having equal size and flow rate as conventional tubing pump Ø70 mm it ensures decrease of maximum impacts on beam pumping unit and specific energy consumption for 30% by means of energy of pulling down rods. “Tandem” pump is specialized SRP with two plungers, hollow rod and plate type valves. It can operate in casing of small diameters from 114 mm and has smaller overhaul dimensions in comparison with conventional tubing pump of Ø70mm.