And at the same time, the fault tripping speed curves were calculated assuming that some components of the spring operation mechanism were in fault.
同时，文章还计算了弹簧机构在主要故障点发生故障情况下的故障分闸速度特性曲线。
The mechanism of casing tubes thread tripping is analyzed and the measures to prevent casing tubes thread tripping are proposed in this article.
分析了套管脱扣的机理，提出了预防套管脱扣的措施，对提高套管产品质量，减少油田掉井事故的发生具有重要的参考价值。
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