钻杆

Comparison of the SISS with the others shows that the SISS solved the problem of conventional magnetic azimuthal surveying method in ferromagnetic casing tubing drill stem or magnetic formation and its measurement precision is better than that of frame gyroscopes surveying system .

与传统的磁方位测量方法和框架式陀螺测量系统的比较结果表明，该系统克服了磁方位测量方法在套管，钻杆，油管以及在磁干扰地层中测定方位时存在的问题，其测量精度优于框架陀螺系统。

Is the frill pipe marked for sticking point?

在钻杆上作卡点记号了吗？

Shut off the lower pipe ram, open the choke line and test the next ram and choke line.

关下部钻杆闸板，开放喷阀，试压第二个闸板和放喷泉管线。

The paper gives a overall of the current situation of the development of drill pipe power tongs in well at home and abroad at first, given the manufacture techonology.

本文运用的基于自顶向下设计思想进行参数化设计的方法，现已完成了"钻杆动力钳系列产品开发"的项目。

Power Tongs and Torque Turns Load Cells: Designed for use in power tongs or drill pipe make-up and break-out applications.

动力钳和自动旋紧管箍机的载荷压力传感器：设计用在动力钳或钻杆的组装和拆卸应用中。

This paper first presents the balance principe of moment for sub mersible drill without rod. The model test proved that the principle is correct and the performance of the drill is superior.

本文首次提出力矩平衡无钻杆钻机的概念，通过模型试验证明了设计思想的正确性和钻机性能的优越性，揭示了主要因素与平衡的关系。

During the process of the automatic drilling ,iron roughneck is the most developed equipment of pipe handling operation and one of the most important automatic equipment which can complete connection of the pipe,casing and other equipmenu and improve the safety and efficiency in oil production.

在自动化钻井生产中，铁钻工是目前最先进的扭矩旋扣设备，可完成钻杆、套管等钻具的旋扣连接工作，提高生产效率和安全性，是现代化钻井中重要的自动化设备之一。

Some new methods to improve drill pipe's angular deviation precision were given. One method was to use a flat-pyramidal welding structure so as to reduce the torque peak. The other method was to use the all-floating clamp to enhance stiffness of the self-centering clamp so

提出了改善钻杆惯性摩擦焊接角偏差的新方法：采用平面—锥面焊接结构，削减初始扭矩峰值；采用全浮动夹具并增大定心夹具刚性以及时纠正工件径向位移。

Create the main reason of wearproof brining failure of drilling rig to possess layer abrasivity 、The drill pipe operational mode under the shaft 、Wearproof stuff selection together with effect applying solderer's skill .

造成钻具耐磨带失效的主要原因有地层研磨性、钻杆的井下工况、耐磨材料选择和敷焊工艺的影响。

Thereby,the stress and the strain distribution diagram of the clamping mechanism and the maximum axial load of the material are obtained.By means of the analysis,the driving pressure of the actuating device is confirmed and the right choice of the material is verified.

分析计算结果表明，当钻杆液压夹紧机构的钳体材料选择ZG310-570，所用液压马达的排量为390 mL/r时，该系统在最小驱动压力4.82 MPa、最大驱动压力7.30 MPa时才能正常工作。

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。