Drilling speed can be predicted through sonic logging.
测井资料可以用来进行钻速的预测。
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 main factors affected on the drilling speed of drilling method are rock-cutting and mud discharge.
影响钻井法钻进速度的因素主要有破岩和排渣。
Through field testing, the PDC bit suited for Sulige gas field increased drilling speed and obtained good result.
通过现场试验，大幅度提高了苏里格气田的钻井速度，取得了显著的效果。
The speed of main motor can be adjusted in variable frequency so as to adapt different cutting force and drilling speed.
主电机可变频调速，以适应不同的切削力和钻孔速度。
The bit type selection is very important to increase drilling speed and reduce costs of drilling in the course of drilling.
钻井过程中钻头类型的选择对于提高钻井速度、降低钻井成本非常重要。
Cuttings bed is formed easily in inclined section of high Angle directional well. It affects drilling speed, threatens drilling safe.
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。
It is pointed out that to raise drilling speed, systems engineering must be done well and a complete set of technique must be formed.
指出提高天然气井钻井速度，必须搞好系统工程，形成配套技术。
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。
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.
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。
Swivel packing seal assembly is the key of the swivel, whose function directly influences its service life, further more, and affects the drilling speed.
盘根密封是(水)龙头的关键环节，其性能直接影响(水)龙头的寿命和钻井速度。
Field tests also show that the self-resonating cavitation nozzle is highly effective in reducing bit wear, increasing drilling footage and drilling speed.
现场试验同样证实设计的自振空化射流喷嘴在保护钻头、减少钻头磨损及增加进尺、提高机械钻速方面有显著作用。
The perfect performance of the DBS drilling rig extends life of drill bit, enhances drilling speed and makes the drilling work more secure and scientific.
DBS钻机性能优良，能延长钻头使用寿命，提高机械钻速，并使钻井更安全、科学。
When we dig a tunnel in sericite quartz-schist with dobby drills, regular bending of the boreholes appears, which affects drilling speed and the borehole quality.
在绢云母石英片岩中开挖隧洞，使用多臂钻造孔爆破，出现钻孔有规律的弯曲现象，影响了钻爆速度和成洞质量。
By drilling hundreds of Wells, it is proved that those methods effectively improve well quality and mechanical drilling speed and are of great value to be applied.
数百口井的实钻证明：这些方法行之有效，使井身质量及机械钻速大大提高，具有极大的推广价值。
Based on the analysis of pump pressure, tension variation, and drilling speed, the existing problems of ultra-short radius side tracking horizontal well were presented.
通过对钻井过程中泵压、张力变化及机械钻速的分析，指出了超短半径侧钻水平井钻井技术存在的主要问题。
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.
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。
Correctly recognizing the differential pressure sticking is of great significance to reduce complex accidents of borehole, increase drilling speed and reduce the drilling cost.
正确认识压差卡钻，对于减少井下复杂事故，提高钻井速度，降低钻井成本具有十分重要的意义。
The air drilling may largely enhance the drilling speed, shorten the drilling time, decrease the drilling cost. The technology, however, needs expensive surface equipments. A …
空气钻井主要应用于中低压地层，可以大幅度提高钻井速度，缩短建井周期，降低钻井成本，但需要昂贵的地面设备。
Considering the large work quantity and tight time schedule for the curtain grouting in Bid I of Letan project, drilling speed is the most critical factor in the construction progress.
乐滩水电站I标工程帷幕灌浆工程量大，工期紧，影响施工速度的最大因素是钻孔速度。
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.
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。
There are the bigger differences between slim hole drilling technology and routine borehole drilling technology. Improving of slim hole drilling speed is of an important actual significance.
小井眼与常规井眼的钻井工艺有较大差异，提高小井眼钻井速度有很大的实际意义。
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.
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。
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.
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。
Two key factors for drilling high quality holes of carbon fibre reinforced plastics, which are to keep the fine sharpness of the cutting lip of the drill and to use high drilling speed are discussed.
探讨了获得钻削碳纤维复合材料高质量孔的两个关键因素：保持钻头切削刃的良好锋利性和采用高的钻削速度。
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.
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 world's longest tunnel will take shape deep beneath the Swiss Alps on Friday when a giant drilling machine clears a path for a key high speed railway through the heart of Europe.
在巨大的钻孔机清理出一条小道后，横贯瑞士阿尔卑斯山下方世界上最长的隧道终于成形。这条隧道将建设成为穿过欧洲心脏地带的高速铁路通道的关键路段。
Meanwhile, put a double team and equipment, 24 hours of continuous construction, drilling two ways to speed up the construction progress.
同时，投入双倍的队伍和设备，24小时连续施工，采取两头钻进的办法加快施工进度。
Meanwhile, put a double team and equipment, 24 hours of continuous construction, drilling two ways to speed up the construction progress.
同时，投入双倍的队伍和设备，24小时连续施工，采取两头钻进的办法加快施工进度。
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