查询词典 whirl drill
- 与 whirl drill 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Applying finite element method,the dynamic characteristics of drill string with cone bit in straight hole were simulated,and the whirl,deformation and the dynamic stress in air drilling were compared with the ones in drilling fluid drilling .
应用有限元方法，仿真了空气钻井时斜直井眼中带牙轮钻头钻柱的动力学特性，比较了空气钻井和钻井液钻井条件下钻柱的涡动、变形以及动态应力状况，探讨了空气钻井钻柱失效的动力学机理。
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This paper studied the annulus whirl ing motion of rotary drill string.
把旋转钻柱简化为一内外有流体的柔性转子系统，分析了在内外钻井液流体作用下的钻柱涡动行为。
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It is shown that the contact interaction enables bottom drillstring to whirl backward, and then an alternate bending stress with higher frequency is produced. So the drillstring fatigue failure could be accelerated. At the same time, a quite strong wallop force of high frequency is produced on the contacting point, and the contacting zone is next to the screw coupling of drill collars. It will easily result in the failure of screw couplings. The research results provide theoretical basis for the prevention of drillstring failure.
研究表明，下部钻柱与井壁的碰摩作用使下部钻柱反向涡动，产生高频的交变弯曲应力，会加速下部钻柱疲劳破坏；下部钻柱与井壁接触点处存在较大的高频冲击力，并且接触区域靠近钻铤螺纹联结处，更容易诱发螺纹联结处失效，该研究成果可为预防钻柱失效提供理论依据。
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了，但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场，你等着挨绳子吧！
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。