Crude oil and natural gas are the most important energy sources in our modern world. Many oil companies complement their traditional mechanical technology with modern electro-hydraulic systems to increase availability as well as production rate. There is a demand for technical solutions which offer a reliable, clean, economic and energy efficient oil production. The electro hydraulic downhole pump drive R7 from Bosch Rexroth achieves all of these requirements. The R7 is built up of a hydraulic cylinder mounted directly on the well head tubing and a hydraulic power unit. Bosch Rexroth also provides perfectly matched electro-hydraulic drive systems for the complete range of progressing cavity pumps (PCP).