Long Stroke Pumping System Improves the Energy Efficiency of the Production

摘要

In the selection of artificial lift system one of most important parameters is the cost of energy provided to the system. This impact is reflected in increase of lifting cost. This paper is based in the study of global energy efficiency of different artificial lift systems and shows the best performance of the Long Stroke Pumping Units (Rotaflex?) with automation. The Long Stroke Pumping Units have high production capabilities, high system efficiency and cost effectiveness for deep troublesome and high–volume wells. The stroke length is up to 25.5 foot and the velocity is up to 4.5 strokes per minute. These characteristics help in the elimination of gas problems and the reduction of wear in the sucker rod string. The short torque arm of this pumping unit results in smaller gear reducer improving the system efficiency. The study included the measurement of electric parameters in different wells of the most important basins of Argentina. The comparison in each field included the Long Stroke Pumping Units, Conventional Pumping Units, Electric Submersible Pumps (ESP) and Progressive Cavity Pumps (PCP). The paper will include a description of operating parameters and the production facilities. In the Conclusion will compare the energy efficiencies of the different artificial lift systems and performance indicators such as: interventions, production, etc.