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总结和讨论了钻铤螺纹联接失效的类型和失效机理 ,指出了现场施工中可能存在的潜在因素。还明确指出了FH型、IF型接头之所以要淘汰的原因 ,建议国内各油田尽力推广使用数字型NC接头
The failure types and failure mechanisms of the threaded connections of the collar are summarized and discussed. The potential factors that may exist in the site construction are pointed out. Also clearly pointed out the reason FH-type, IF-type joints to be eliminated, it is recommended that all domestic oil fields to promote the use of digital NC connector