hole-bottom power drilling
... hole 井眼 hole-bottom power drilling 井下动力钻井 hole-bottom working characteristic 井底工作特性 ...
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井下动力钻具钻井 downhole motor drilling
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第二章分析探讨了地面动力旋转钻井井下钻柱的运动状态、受力及螺纹联接的特性。
In chapter two, the prosperity of the motion, force and screwed joint of the surface dynamic rotating drilling downhole drilling string has been discussed.
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