It was found that the rotation speeds of 3 cones in one rotary bit are different, and the speeds of rotation are also different for different types of rock bits.
发现一个牙轮钻头中的三个牙轮回转速度不相同。而不同类型牙轮钻头的牙轮转速也不相同。
Based on analyses about the structures and existing problems of integrally retractable alternative cutting element bits, a integrally rotary replacing cutting element bit was proposed.
在分析各国整体切削具不提钻可换式钻头结构及存在主要问题的基础上，提出采用整体旋转切削具可换式钻头。
The rotary carriage provides rotary and vertical motion to the drill string and bit.
转动滑架为钻柱和钻头提供转动和垂直移动。
The new algorithm reduces the number of scanning the original database through using rotary database and bit operations, and accelerates the speed of data mining.
新算法通过使用旋转数据库和位运算减少了扫描原始数据库的次数，加快了挖掘速度。
This paper has introduced a set of test device to examine the loads on teeth of the bit at different rotary speed and under high bit-weight.
本文介绍了一套测试装置，用以测试钻头在大钻压下任意转速的牙齿受力。
The driller then picks up the entire drillstring to remove the slips, carefully lowers the drillstring while starting the pumps and rotary, and resumes drilling when the bit touches bottom.
之后司钻上提整个钻柱，移去卡瓦，在开泵并旋转的同时小心地下放钻柱，当钻头接触到井底之后，重新开始钻进。
The self-feeding bit consists of the rotary nozzle, the cutting conformity device and the power supply device etc.
自进式钻头由旋转喷嘴、钻屑整合装置、推力提供装置等组成。
The necessary technology, which combines the high rotary speed turbine with the diamond impregnated bit, is put forward to solve the deep drilling problems encountered in West Sichuan.
通过分析涡轮及孕镶金钢石钻头的主要性能，提出采用高转速涡轮+自锐孕镶金钢石钻头配套技术来解决川西深井钻井所面临的问题。
With targeted bit speed and specialized MWD components, the SRT provides efficient directional drilling at a lower cost than rotary-steerable systems.
高效钻速与专业化的MWD组件，使得SRT较于常规型旋转导向系统能够以更低成本完成更加高效的定向钻进。
The design method of the rotary viscometer system with the 32-bit ARM as the kernel is presented, the measuring principle and structural design of this instrument are described in detail.
介绍了一种32位ARM内核的旋转式黏度仪系统设计方法，详细说明了仪器的测量原理和结构设计。
The designed testing system in the paper can complete these tests as to air pressure, airflow rate, rotary speed, bit weight and drilling depth in the process of well drilling.
本文设计的物探钻具性能测试系统可完成对钻井过程中的空气压力、空气流量、转速、钻压、钻井深度等参数的测试。
The weight on bit and rotary speed are the main factors affecting the motion behavior of drill string. The higher the rotary speed is, the more easily the regular whirling will be formed.
钻压和转速是影响钻柱运动状态的两个主要因素，转速越高，越容易形成规则涡动；
The results show that longitudinal vibration of drill string is relative to rotary speed and weight on bit (WOB).
实验结果表明，钻柱的纵向振动主要与转速和钻压有关。
The results show that longitudinal vibration of drill string is relative to rotary speed and weight on bit (WOB).
实验结果表明，钻柱的纵向振动主要与转速和钻压有关。
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