钻杆

It has to be tall because it is like a giant block and tackle, and we have to lower into the ground and haul out of the ground great lengths of drill pripe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.

钻井必须很高，就象一个巨大的滑轮。我们必须降到地下然后将钻杆拔出来。钻杆的顶端有一个马达使它旋转而底部是一个尖头。

Which are rotated by an engine at the top and are fitted with a cutting bit at the bottom .

钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

This paper is a part of research on a development drill pipe power tongs in well.

论文首先总揽了国内外钻杆动力钳发展的现状，并权衡了各种钻杆动力钳的设计理论和结构，结合现有生产技术，运用利用参数化设计方法进行系列产品开发，此方法缩短了产品开发周期，并可以直观设计结果，检验整体结构设计的正确性。

In order to know the cause of the accidents, an investigation is taken and the failure analysis is carried out for one broken drill pipe.

为了搞清钻杆断裂原因，对空气钻井过程中钻具断裂事故进行了调查研究，并对一根断裂钻杆进行了失效分析。

The three fail form of scoring,fillister and corrosion for 127 mm(5) S135 drill rod joint ,corrosion rate and corrosion production have been researched by means of analysis of chemical composition and microstructure,testing of mechanical property.

通过化学成分分析、力学性能测试、组织结构分析和高温高压模拟试验，对127 mm(5)S135钻杆接头内壁出现划痕、凹槽和腐蚀三种失效形式，钻杆的腐蚀速率和腐蚀产物进行分析研究。

The results show that the synthetic properties of geological drill rod by friction welding are better than that of the hot upset forged drill rod.

结果表明，与热镦粗的钻杆相比，摩擦焊接的地质钻杆具有良好的综合性能。

Diameter drill pipe design for the 60.3 mm, for the 1524 mm long with a cone-shaped male connector, commonly known as EF / N-type drill pipe.

钻杆设计直径为60.3mm，长为1524mm带有锥形螺纹接头，通称EF/N型钻杆。

This paper introduces different mechanical rod break-out modes,their structures,characteristics and operating programs of top-drive power head drill.

介绍了动力头式钻机的几种机械卸扣方式及其结构特点、操作程序，其中包括先卸钻杆下扣的上扣防松器、活动提篮上扣防松装置以及先卸钻杆上扣的上垫叉座装置。

In consideration of the problem of drill pipe bending steering in radial horizontal well drilling, ANSYS software is used to simulate its major influencing factors, such as slideway trajectory curvature, clearance, working pressure, roller shape and position and thickness of drill pipe by establishing a finite element model for the bending steering mechanism.

针对径向水平井钻进中钻杆弯曲转向前进运动困难的问题，通过建立弯曲转向机构仿真有限元模型，对其主要影响因素：滑道轨迹曲率、间隙、工作压力、滚轮形状与位置和钻杆壁厚等用ANSYS软件进行仿真研究。

Kelly Hose - The kelly hose is a section of high-pressured hose connecting the standpipe and the swivel.

方钻杆水龙带：方钻杆水龙带是连接立管和水龙头的一段高压水龙带。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。