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地面驱动单螺杆泵抽油杆失效类型有断杆、脱扣 ,以及抽油杆与接箍联接螺纹剪切破坏等。影响地面驱动单螺杆泵抽油杆失效的主要因素有杆柱安全系数小 ,抽油杆刚度差 ,砂卡及高粘油胶质沉积 ,过载保护不理想及配合螺纹精度低及接箍材料不合格等。提出应改进过载保护系统 ,正确设计抽油杆柱 ,合理选取有关参数 ,进行刚度校核及严把质量关 ,确保螺杆泵系统高效可靠地运行。
Ground-driven single-screw pump sucker failure type broken rod, tripping, and sucker rod and coupling coupling thread shear damage. The main factors that affect the failure of ground-driven single-screw pump sucker rod are the small safety factor of rod, poor sucker rod stiffness, sand card and high viscous glue deposition, unsatisfactory overload protection and low accuracy of thread and the coupling material Pass and so on. It is suggested that the overload protection system should be improved, the sucker rod column should be designed correctly, the relevant parameters should be reasonably selected, the stiffness checked and the strict quality control be ensured so that the screw pump system can operate efficiently and reliably.