the rotary control head 旋转控制头
Rotary control head is a key device in underbalanced drilling. Combined with other units, drilling while blowing out can be achieved.
旋转控制头是负压钻井的一个关键装置，利用它和其它地面设备可实现边喷边钻。
And then, the mathematics model was firstly set up to analyze the force that the rotary control head endured when the preventer installed aslant.
并在此基础上通过建立力学数学模型完成旋转控制头在安装偏斜的情况下的动力学分析。
As the key part of the rotary control head's bearing assembly, the capability of the rotary dynamic seal equipment effects on the using life of the rotary control head.
旋转动密封装置是旋转控制头轴承总成的关键部件，其性能好坏直接影响旋转控制头的使用寿命。
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