... 井底泵 bottom hole pump 井底动力钻具（井底马达） downhole motor 井底动力钻取心 downhole motor coring ...
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straight-hole downhole motor 直井井下马达
downhole motor drill [地质] 孔底动力钻机
downhole motor drilling 井下动力钻具钻井 ; 井底动力钻井
steerable downhole motor assembly 可转向的井下马达钻具组合
deflecting used downhole motor [油气] 井底动力钻具造斜
downhole motor coring 井底动力钻取心
articulated downhole motor 铰接式螺杆钻具
The application of finite element analysis technique improve design of downhole motor ,ensure reliability of production design, reduce production invalidation probability . So it can provide reliable theory support for the redesign of the downhole motor.
有限元法在螺杆钻具产品设计中的应用,提高了产品的设计质量,保证了产品设计的可靠性,减少了产品的失效概率,为螺杆钻具的改型设计提供了理论支持。
参考来源 - 基于CAE的螺杆钻具结构分析及优化设计·2,447,543篇论文数据，部分数据来源于NoteExpress
Meanwhile, the downhole motor and MWD are not affected and wellbore trajectory can be controlled because of the continuous fluid phase flow throughout the bore hole.
同时由于从井口到井底始终存在着连续的液相流，常规井下动力钻具和随钻仪器的性能不受影响，可以进行正常的井眼轨迹控制。
The latch phase circle circuit NE567 functions as phase demodulation of audio frequency signals for realizing decoding output of the control signals to control the downhole motor operations.
应用锁相环集成电路ne567对音频信号的鉴相原理实现对控制信号的译码输出，控制井下仪器马达工作。
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