Dynamic simulation and efficiency analysis of beam pumping system  

作　　者：邢明明 董世民 童志雄 田然凤 陈慧玲 

机构地区：[1]School of Mechanical Engineering, Yanshan University

出　　处：《Journal of Central South University》2015年第9期3367-3379,共13页中南大学学报（英文版）

基　　金：Projects(50974108,51174175) supported by the National Natural Science Foundation of China

摘　　要：An improved whole model of beam pumping system was built. In the detail, for surface transmission system(STS), a new mathematical model was established considering the influence of some factors on the STS's torsional vibration, such as the time variation characteristic of equivalent stiffness of belt and equivalent rotational inertia of crank. For the sucker rod string(SRS), an improved mathematical model was built considering the influence of some parameters on the SRS's longitudinal vibration, such as the nonlinear friction of plunger, hydraulic loss of pump and clearance leakage. The dynamic response and system efficiency of whole system were analyzed. The results show that there is a jumping phenomenon in the amplitude frequency curve, and the system efficiency is sensitive to motor power, pump diameter, stroke number, ratio of gas and oil, and submergence depth. The simulation results have important significance for improving the efficiency of beam pumping system.An improved whole model of beam pumping system was built. In the detail, for surface transmission system（STS）, a new mathematical model was established considering the influence of some factors on the STS＇s torsional vibration, such as the time variation characteristic of equivalent stiffness of belt and equivalent rotational inertia of crank. For the sucker rod string（SRS）, an improved mathematical model was built considering the influence of some parameters on the SRS＇s longitudinal vibration, such as the nonlinear friction of plunger, hydraulic loss of pump and clearance leakage. The dynamic response and system efficiency of whole system were analyzed. The results show that there is a jumping phenomenon in the amplitude frequency curve, and the system efficiency is sensitive to motor power, pump diameter, stroke number, ratio of gas and oil, and submergence depth. The simulation results have important significance for improving the efficiency of beam pumping system.

关 键 词：beam pumping system surface transmission system（STS） sucker rod string（SRS） system efficiency dynamic simulation 

分 类 号：TE933[石油与天然气工程—石油机械设备]