有杆抽油设备在机械采油技术中占有相当重要的地位。据统计,在世界上有杆抽油井占机械采油井数的90%左右。我国原油生产的75%以上都是有杆泵抽油系统完成的。在有杆抽油系统中,抽油杆是相当重要的构件,也是最为薄弱的环节,它不仅受交变载荷的作用,同时受油、气、水等各种介质的侵蚀,容易产生疲劳断裂或腐蚀断裂等事故,使油井停产。抽 Sucker rod pumping equipment occupies a very important position in the mechanical oil recovery technology. According to statistics, rod pumping wells account for about 90% of the total number of wells in the world. More than 75% of the crude oil production in our country is completed by sucker rod pumping system. In rod pumping system, sucker rod is a very important component, but also the most weak link, it is not only affected by alternating loads, but also by oil, gas, water and other media erosion, prone to fatigue fracture Or corrosion fracture and other accidents, the well shutdown. Pumping