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- Rock drillability is significant for selecting proper bit and improving drilling efficiency, and can be properly predicted by well logging information. 岩石可钻性是钻头选型、提高钻井效率的基础,利用测井资料预测岩石可钻性是行之有效的手段。
- The functions of trenchless rig's driving mechanism affect its drilling efficiency, bore hole quality and other technologyical performances directly. 非开挖钻机给进机构的性能好坏直接影响钻机钻进效率、钻孔质量及钻机各项技术性能的发挥。
- When drilling extra-hard, compact and weak-abrasiveness formation, diamond bit is oftenpolished and slipping. The drilling efficiency, run and the mean life are very low. 金刚石钻头在坚硬致密弱研磨性岩层钻进时,经常出现钻头抛光和打滑现象,钻头时效、使用寿命都非常低。
- Description is made of the roller-type cutting head, the distribution law of the cutters, as well as the effect of drilling parameters on the drilling efficiency. 介绍了滚刀钻头破岩机理、滚刀的分布规律、以及钻进参数等因素对钻进效果的影响,并通过施工实例对目前滚刀钻头使用中所存在的主要问题进行了分析。
- 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. PDC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PDC钻头可大大提高钻井速度。
- The experience in the use of three types of deep drilling rigs, DHD and rotary, in VCR stopes of Fankou Pb/Zn mine was introduced. The ways how to control the hole deviation and how to increase the drilling efficiency were discussed in more detail. 介绍了凡口铅锌矿VCR采场应用三种型号潜孔钻机和牙轮钻机深孔凿岩的经验,对如何控制钻孔偏斜、提高凿岩效率作了详细论述。
- Through the orthogonal experiments these drill parameters influencing drilling efficiency, such as granularity, concentration, number of water grooves and edge thickness, were optimized. 试验证明,采用优化参数的套钻可高效地对陶瓷复合构件进行钻孔加工,质量完全满足技术要求。
- The field application shows that this technology can solve the contradiction between hole deviation and WOB during fast drilling, the drilling efficiency can be increased very obviously. 现场应用表明:该技术较好地解决了钻井提速工作中井斜与钻压之间的矛盾,使钻井效率明显提高;
- The operating performance quality of the roller bit, which is the most main broken crag tool, directly influence the well drilling quality, well drilling efficiency and well drilling cost. 牙轮钻头是钻井工程中最主要的破岩工具,其工作性能的好坏直接影响钻井质量、钻井效率和钻井成本。
- It has presented the index of drilling efficiency expressed by the ration of penetration rate and matrix wear,this determing the optimal drilling parameters based on the latter index. 提出了表示机械钻速和钻头胎体磨损关系的钻探效果指标,并根据后者确定出了规程参数最优值。
- The field experiment shows that the rig has high operability, mobility, reliability and drilling efficiency, as well as the locating drilling direction and fixing the rig are very convenient. 现场试验表明:该钻机操作简单,移动性好,钻进效率高,性能可靠,钻孔定位和稳固快捷方便。
- Drilling efficiency and service life of bit are guaranteed by using superior monocrystalline diamond impregnating pads according to specific applications and which have good self-sharpening property. 针对性配方优质单晶金刚石孕镶块,自锐性强,保证钻进的效率和寿命。
- On the basis of studying on the affect over the duration and the drilling efficiency of electroplating diamond drilling bits, the factors are optimized by the orthogonal expen-ment. 经过实践证明,采用这些参数加工的电镀金刚石套钻其使用寿命和钻削效率明显提高,效果显著。
- Utilizing peculiarities of platform cluster well groups the cross operation technique of riser pipe, surface and oil formation is executed to improve drilling efficiencies. 充分利用平台丛式井组特点,施行隔水管、表层及油层交叉作业工艺,提高了钻井效率;
- The drilling troops mustered on the hill. 演习部队在小山上集合起来了。
- The workman is drilling in the wall. 工人正在墙上打孔。
- Drilling is cutting a hole with a drill. 钻削就是用钻头钻一个孔。
- We must improve our efficiency as soon as possible. 我们必须尽快地提高工作效率。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- The noise of the drilling is intolerable. 钻孔的噪音让人受不了。