随钻地震技术是利用钻井期间旋转钻头的振动作为井下震源。
It USES the vibrations produced by a drill bit while drilling as a downhole seismic energy source.
将金刚石复合体加工成凿岩切削齿，应用于旋转钻头上，设计制造了新型旋转钻头产品。
A new type of rotary bits was manufactured by processing the PDC product into drilling cutting buttons and then embedding them into rotary bits.
钻孔是用一个称为“钻头”的旋转刀具进行的。
便携式手提电动工具。手柄振动的测量。第3部分：岩石钻头和旋转锤。
Hand-held portable power tools. Measurement of vibrations at the handle. Part 3 : rock drills and rotary hammers.
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 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.
用钻头，螺钻或旋转切割机在加工或增大孔的大小。
To reproduce or increase the size of a hole by use of a drill, auger or rotary cutting tool.
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 self-feeding bit consists of the rotary nozzle, the cutting conformity device and the power supply device etc.
井下稳定器安放位置调节器是斜井旋转钻井时实施井斜连续控制的专用工具，安装在钻头与钻铤之间。
The downhole stabilizer location adjuster, fixed between the bit and the drill collar, is a special tool for continual deviation control of a slant hole.
将直线上孔的位置数据输入控制器、伺服驱动器来控制伺服电机，控制伺服电机的旋转角度即可控制钻头在直线上的位置。
If location data of holes in a line are input to controller the controller controls servo motor. As the rotating Angle of servo motor is controlled the location of bit in the line can be controlled.
在研究钴进过程的最佳化生产条件中，由于钻探成本的开支不是唯一的一项钻头费用，所以就有必要对最低钻探成本的最高钻头切割岩石的旋转速度进行探讨。
Because the drilling cost is not the sole cost of bit, it is necessary to discuss here the highest rotation speed of bit in cutting rock at the lowest drilling cost.
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。
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.
从动元件以及相关联的驱动连接件的旋转操作传动机构并导致钻头安装件以及相关联的刳刨机钻头的旋转。
Rotation of the driven member and associated drive coupling operates the drive train and results in rotation of the bit mount and associated router bit.
利用偏心钻具在旋转过程中的离心力和偏心短钻铤的偏重带的支撑作用，减小了钻头轴线倾角，从而减少了井斜。
By taking advantage of rotating centrifugal force and the supporting effect of eccentric short drill collar, we cut off the axis inclination of bit, and avoid well inclination.
旋转冲击钻井技术依靠冲击器产生冲击载荷并作用在钻头上来破碎岩石。该技术能够有效提高硬地层钻井速度，能够防止硬地层及复杂地层钻井中的井斜问题。
The rotary percussion drilling technology have the advantage to raise the hard rock well drilling speed effectively, prevent the borehole deviation in the hard rock or the complicated geologic strata.
钻孔是用一个称为“钻头”的旋转刀具实行的。
侧喷嘴倾斜角度在0度、30度、45度和60度情况下，由于井底涡旋器的旋流作用，导致井底产生旋转，对钻头喷嘴射流产生了影响，以致在45度时出现压力损失最小的情况；
When the inclination angle of a side nozzle is 0, 30,45 and 60 degrees, the eddying flow of the bottom hole vortex device will cause rotation at the bottom hole, affecting on the jet from bit nozzles.
无电刷电机精确地控制旋转的钻头，它具有可编程编码器，每360度计数超过57,000次。
The brushless motor precisely controls the rotation of the auger, with a programmable encoder that provides more than 57,000 counts per 360 degree revolution.
使用时，将钻头放入钻孔的位置，左旋转即可钻出左旋丝纹的钻孔。
When used, the drill bit is put into a drill hole, and then rotated left to drill out the drill hole with left-hand threads.
使用时，将钻头放入钻孔的位置，左旋转即可钻出左旋丝纹的钻孔。
When used, the drill bit is put into a drill hole, and then rotated left to drill out the drill hole with left-hand threads.
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