钻进速度应根据电流变化及时调整。
Drilling rate should be based on the current changes and timely adjust.
清渣容易、回转阻力小、钻进速度快。
Drilling fast, easy slag, the smaller the turning resistance.
影响钻井法钻进速度的因素主要有破岩和排渣。
The main factors affected on the drilling speed of drilling method are rock-cutting and mud discharge.
在牙轮钻头的钻进中，水射流是钻进速度快慢的决定因素之一。
Water jet flow is one of the decisive factors for drilling rate during rock bit drilling.
试验表明，该技术方法具有岩芯（样）采取率高、钻进速度快的特点。
The experiment shows the technique possessing high core recovery rate and quick drilling speed.
试验表明，该技术方法具有岩芯(样)采取率高、钻进速度快的特点。
The experiment shows the technique possessing high core recovery rate and...
试验表明，该技术方法具有岩芯（样）采取率高、钻进速度快的特点。
The experiment shows the technique possessing high core recovery rate and quick…
大斜度定向井斜井段易形成的岩屑床影响钻进速度、威胁钻井施工安全。
Cuttings bed is formed easily in inclined section of high Angle directional well. It affects drilling speed, threatens drilling safe.
液动冲击器冲击回转钻进技术应用于地热井钻进中，可以数倍提高钻进速度。
The percussion and rotary drilling of hydraulic impactor may heighten drilling velocity several times, when it is been applying in drilling geothermic well.
井下液力推进器的应用在一定程度上解决了钻压的施加问题，有利于提高钻进速度。
Application of downhole hydrodynamic propulsors solves the problem of exerting WOB, and are helpful to enhancing penetration rate.
对大冶铁矿大理岩和原生矿体的钻孔指标进行监测，建立合理单耗与钻进速度关系式。
Through monitoring and measuring of drilling indices of marble and primary ore body of Daye Iron Mine, a rational relationship between unit energy consumption and drilling speed is established.
在砂土层中钻进时，要及时开启泥浆分离器，降低含砂率，保证钻进速度和孔壁的稳定。
When drill hole in sandy soil the desander should be timely turned on to reduce the sand content and ensure the drilling progressing and stability of the hole.
卵砾石地层钻进是钻探的难题之一，不仅钻进速度低，钻头的使用寿命短，而且钻探成本高。
Drilling in gravel stratum is one of present difficulties in drilling area with low drilling speed, short service life of bit and high drilling cost.
卵砾石地层钻进是钻探的难题之一，不仅钻进速度低，钻头的使用寿命短，而且钻探成本高。
When large dismeter water well is constructed in cobble and boulder strata drilling by percussion machine is not proper to be used as limited by condition.
通过对空气潜孔锤跟管钻进钻具的受力分析，得到影响潜孔锤跟管钻进速度和跟管深度的因素。
By analysis of enforcement of drilling tools of air downhole hammer's following pipe, the factors affecting the drilling speed and depth of the following pipe are obtained.
多工艺旋挖钻进技术工艺适应地层能力强，比传统的钻进工艺方法可以提高钻进速度24倍以上。
The multi-process no-circulation foundation drilling techniques is highly adaptable to various formations, and drills faster than the conventional methods by 2 to 4 times.
通过大量试验证明，这些结构的设计可靠合理，对于提高钻进速度，增加其使用寿命具有重要作用。
Tests have proved that the above-mentioned structural designs are reliable and contribute a lot to increase in ROP and service life.
泥浆制备、循环、净化等因素的好坏直接影响到钻进速度和成孔质量、桩侧摩阻力及桩端阻力的发挥。
These factors, which include slurrys preparation, circulation, depuration and so on, would influence drilling speed, bore quality, exertion of pile shaft resistance and base resistance.
系统阐述影响液压锚杆钻机钻进速度的主要因素之间的关系，为锚杆钻机主要参数的合理匹配提供了计算依据。
The paper elaborates the relation of main factors influenced on the drilling speed of hydraulic roofbolter, which provides a calculation basis for reasonable match of main parameters of roofbolter.
镶齿牙轮钻头主要适用于地质较硬的岩层，它钻进速度稳定，可以钻进1-6级地质硬度，适用于各种恶劣的地质环境。
Insert tooth bit applies in every serious geography especially hard rock; it has stable drilling speed and can drill the hardness of rock at 1-6 grades.
所以在钻井作业中采用减震器，对于延长钻头使用寿命，加快钻进速度、克服严重跳钻、保证正常钻井、保护地面设备及钻具是十分可靠的。
Taking use of the shock absorber, it can raise the service life for drill bit and drill tool, speed up drilling, get rid of drilling jumping, well protect surface equipments and drilling tools.
借助自然的力量，美国麻省理工大学的一组研究人员建造了一群会游泳的机器人鱼。这种“机器人鱼”可以像真鱼一样动作“优雅地”钻进水里，但速度可能没那么快。
Borrowing from Mother Nature, a team of MIT researchers has built a school of swimming robo-fish that slip through the water just as gracefully as the real thing, if not quite as fast.
在水文水井中，气动潜孔锤钻进仍可发挥它高效率、高速度的作用。
The air-driven down-hole hammer drilling is still very effective and speedy in well drilling in karst limestone area.
开展油田钻柱失效分析与预防对提高钻井速度、降低钻井成本及井下安全钻进具有重要意义。
It is very important for improving drilling rate, reducing drilling cost and safety drilling to carry out drill stem failure analysis and prevention.
结果表明，在地层随机激励作用下，钻柱的振动将会引起钻压的波动，从而影响钻头的寿命及其钻进的速度。
The results show that the vibration of drilling strings will produce the fluctuation of weight on bits by random excitation, so the bit life and drilling rate are affected largely.
介绍了旋喷钻机钻进过程中几个重要工作参数的检测方法，包括钻机的钻进深度、动力头的回转速度以及摆喷的角度等。
Described the methods of detecting for some vital operating parameters of the jet-grouting drilling rig when it worked, including the drilling depth, the rotating speed and the swinging Angle.
PD C钻头具有钻进时间长、机械钻速高、起下钻次数少等特点，使用PD C钻头可大大提高钻井速度。
PDC bit have advantages of high penetrate rate, long bit life which saving tripping times so that the application of PDC bit can improve drilling efficiency.
PD C钻头具有钻进时间长、机械钻速高、起下钻次数少等特点，使用PD C钻头可大大提高钻井速度。
PDC bit have advantages of high penetrate rate, long bit life which saving tripping times so that the application of PDC bit can improve drilling efficiency.
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