机械钻

Based on indoor measurement of rock acoustic velocity,drillability, rigidity ,uniaxial compressive strength,the relationship between acoustic velocity and fragmentation parameters of rocks and that between the surface acoustic velocity and the underground mine logging acoustic velocity were explored by regression analysis.

在室内测定岩石声波速度、可钻性、硬度、单轴抗压强度试验的基础上，利用回归分析方法，探索声波速度与岩石机械破碎性能参数之间、地面声波速度与井下测井声波速度之间相关关系，建立了利用测井声波速度预测地层岩石机械破碎性能参数的数学模型，介绍了预测剖面及资料验证结果，并将这一方法用于计算PDC钻头可钻性以及中国南方海相碳酸盐岩地层的岩石力学参数。

Sunshine Jinsheng prospecting machinery parts factory was established in 2004, in Juxian County in Rizhao industrial roundwood, mainly the production of machinery parts of prospecting, drilling pipe series of products, all kinds of Taps, the mother cone series, including alloy free clamp, pliers, wrenches, Pad fork, plywood, hammer hanging Series, all kinds of joints, joint public and joint mother, coupling series, Kahuang, kava series, to Reply, Reply to Central series, with the rope diamond drilling coring drill pipe, drilling - Tube assembly, gripping Trojans, and other products, and processed in accordance with customer demand for a variety of accessories.

日照金盛探矿机械配件厂成立于2004年，位于日照莒县工业圆，主要生产各种探矿机械配件，产品有钻杆系列、各种丝锥、公母锥系列、含合金自由钳、钳子、扳手、垫叉、夹板、吊锤系列、各种接头、接头公、接头母、接箍系列、卡簧、卡瓦系列、提引器、提引环系列、金刚石钻进用绳索取心钻杆、钻杆内管总成、木马夹持器、等产品，并可根据客户需求加工制作各种配件。

Its unique feature is that concentrate energy to directly drive bore bit on breaking rock, and energy is sufficiently utilized, drill speed is fast and well bore is well.

其主要特点是将能量集中在井底直接驱动钻头破岩，能量利用充分，机械钻速较高，井身质量好。

Compared with the roller cone bit at the same interval of the same area, the new bit shows significant economical and social benefits by an increase of 290% for average footage and a rise of 77.8% for average ROP.

现场试验证明与同地区同井段使用的牙轮钻头相比：平均进尺提高了2.9倍，平均机械钻速提高了77.8％，具有明显的经济效益和社会效益。

Cone bit ; transmission ratio ; penetration rate ; simulation test

牙轮钻头；传动比；机械钻速；模拟试验

This paper introduced the structure and operating principle of pneumatic hammer,the selection of drilling parameter,the effect of field experiments and the existent problems. pneumatic hammer ; drilling technology,deviation prevention ; wiping

它兼容了气体钻井和冲击回转钻井的优势，其机械钻速一般比牙轮钻头回转钻井高，美国早在50年代3000~3500m深井中，成功地采用了空气锤钻井技术，而国内以前运用该技术于地质勘探、水文

American newspapers say the new revelations will detail how officers used a power drill to terrify a suspect during interrogation and fired the gun to make a prisoner think a fellow detainee had been executed.

美国各大报纸评论说，新曝光的的内容将揭露在审查期间，参与审讯人员如何采用机械钻对疑犯进行恐吓的细节，以及鸣枪让罪犯想起下一个被处决的人等内容。

Gas drilling ; penetration rate ; rotary drilling ; percussion drilling ; rock breaking

气体钻井；机械钻速；旋转钻井；冲击钻井；岩石破碎

In the drilling operation of horizontal well,the penatration rate is lower in high angle and horizontal intervals,and it is difficult to adjust tool face angle with downhole motor,which haven't yet been solved so far.

在水平井钻井施工中，大斜度段(5 0°～ 80°)和水平段钻进时的机械钻速低及采用井下动力钻具进行调整工具面角困难的问题，至今没有得到充分解决。

The company range of products and services include: self-and agent all kinds of domestic and foreign oil import and export of machinery and equipment Products Services, including: drilling machinery (drill, drill pipe, square pipe, drill collar, screw drill), oil production machinery (pumping, ground-driven screw pump, electric submersible screw pump, pump, sucker rods, valves, various types of downhole tools), pipe (tubing, casing, pipe, glass pipe, composite pipe ), oil field chemicals (such as drilling fluids, completion fluids, workover fluids, anti-foam agent, emulsifier, oil microorganisms, scale, etc.) and oil technology development, transfer and services.

公司主要产品和服务范围包括：自营和代理国内外各类石油机械设备产品的进出口服务，主要包括：钻井机械（钻机、钻杆、方钻杆、钻铤、螺杆钻具）、采油机械（抽油机、地面驱动螺杆泵、电潜螺杆泵、抽油泵、抽油杆、阀门、各类井下工具）、管材（油管、套管、输送管、玻璃钢管、复合管）、油田化学品（如钻井液、完井液、修井液、防泡剂、乳化剂、采油微生物、阻垢剂等）以及石油技术的开发、转让和服务等。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。