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详细的金相检查表明引起７８ｉｎ抽油杆和１ｉｎ抽油杆失效的原因是腐蚀疲劳。在低硫原油环境中，一根７８ｉｎ抽油杆的服役期只有几个月，而另一根１ｉｎ抽油杆则工作了一年，两种抽油杆腐蚀疲劳失效均是由于作业过程中反复加载引起的。由于氯离子和二氧化碳的存在，在抽...
A detailed metallographic examination showed that the cause of failure of the 78in sucker rod and 1in sucker rod was corrosion fatigue. In the low-sulfur crude oil environment, a 78in sucker rod has only a few months of service while the other 1in sucker rod has been working for a year. Both sucker rod corrosion fatigue failures are due to repeated operations Caused by loading Due to the presence of chloride and carbon dioxide, pumping ...