Study on Single Crank Flexible Pumping Unit in Oil Field Artificial Lift

International tension between energy supply and demand boost developments of energy-saving industry. Structure drawbacks of four linkage bar of the conventional beam pumping unit in oil field artificial lift led to the study of a single crank flexible pumping unit. Because of beam pumping unit issues, such as many energy transfer links, high energy consumption and investment, and so on, the single crank flexible pumping unit made the flexible delivery instead of rigid, substantially reduce the energy transfer links, to reduce the weight of the load rod as a breakthrough to achieve light and compact oil production ground equipment, while minimizing energy consumption, increased functionality, lower investment and overall cost. Field tests show that significant energy savings are found in the single crank flexible pumping unit, which is worth of promoting.