Design of an augmented hydraulic pumping unit

In order to promote the development of China's petroleum industry, through the study of long-stroke and low-stroke pumping units, an augmented hydraulic pumping unit is adopted as the main research content. Firstly, by comparing the hydraulic pumping unit with the beam pumping unit, it is concluded that the hydraulic pumping unit has good advantages in exploiting deep well oil, high water cut oil and heavy oil. Secondly, through the study of the design requirements of the enhanced hydraulic pumping unit, the appropriate hydraulic cylinder system of the enhanced hydraulic pumping unit is selected. Finally, the control system model of the enhanced hydraulic pumping unit is established, which is controlled by PLC. The design and analysis of the augmented hydraulic pumping unit are carried out. The results show that the compound hydraulic cylinder, a new type of electronically controlled bidirectional hydraulic lock and CPM1A-20CDR-A PLC are used as the main parts of the design to realize the upper and lower stroke of the hydraulic pumping unit, and make it more automatic and intelligent. By calculation, the hydraulic system recovers nearly 35% of the system potential energy, thus realizing the energy saving problem on the pumping unit. It can be seen that the enhanced hydraulic pumping unit designed and analyzed, has certain functions of safety, protection and alarm. Compared with the traditional pumping unit, the enhanced hydraulic pumping unit has more automation and intelligence, and saves more electric energy. Therefore, it can complete the process of slow oil absorption and fast oil extraction, which is more suitable for deep and heavy oil wells, and meets the design requirements. © 2019 Editura Politechnica. All rights reserved.