Drill string resonance is the major cause of drill tool failure.
钻柱共振是引起深井钻具失效的主要原因。
The failure of collar connection thread is one of the prime drill tool failures.
石油钻铤螺纹联接失效是钻具失效的主要类型。
This paper analyses the influence of excentric shaft connection on force case of drill tool, and discusses the causes of drill tool failure.
文中分析了使用偏轴接头对钻具各部分受力情况的影响及导致钻具失效的原因。
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