sinker bar是什么意思

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FEM analysis and design of the magnetizer on external thread testing of drill pipe;

钻杆外螺纹检测中磁化器的有限元分析与设计

The utilization of ultrasonic flaw detection in detecting drill pipe crassitude intermediate belt;

超声波探伤在钻杆加厚过渡带检测中的应用

Research on the modeling of simulation of the drill pipe of URRS'turning and bending system and simulation of the resistance;

径向水平井钻杆弯曲转向建模与阻力仿真研究

The technique analysis of drilling pipe frictional welding and heat treatment;

钻杆摩擦焊接及热处理工艺分析

Improvement and application of drilling pipe detecting equipment;

钻杆检测设备的改进与使用

Numerical calculation of temperature field for spray quenching on friction welding joint of drilling pipe;

石油钻杆焊缝气雾淬火过程温度场的数值计算

Comparative study on corrosion between drill stem S135 and valve plate Cr13 in diesel tail gas drilling environment;

S135钻杆和Cr13阀片在柴油机尾气环境中腐蚀行为比较研究

With the electromagnetism theory and the characteristic of the well-drilling equipment,the paper brings forward the engineering technique of using drill stem as antenna in the telemeteing system of well-drilling.

分析了制约钻井遥测发展的技术原因,结合电磁理论和钻井设备本身的特点,提出在钻井遥测系统中以钻杆为天线的工程技术,然后从多方分析了该技术的可行性和实用性,并在试验中得以证实。

This article introduces an easy way of deep machining and puts forward taking use of normal machine tool,simplifying craft installment,improving twist drill and connection types of drill stem by analyzing many influent factors on deep machining,which include discharging scrap,wear and tear,radiating and orientation.

本文介绍了一种简便的深孔加工方法 ,通过对深孔加工中排屑、磨损、散热和导向等诸多因素的分析 ,提出了利用普通机床 ,简易工装 ,改进麻花钻及钻杆的连接形式 ,在实践使用中取得了较好的效果。

Optimized design of drilling rod structure parameter for screw miner;

螺旋钻采煤机钻杆的结构参数优化设计

Optimization parameter unit of the inner upset transitional area of drilling rod;

钻杆内加厚过渡区参数优选

A kind of gripper in industrial robot for grasping the drilling rod

一种夹取钻杆的工业机器人手爪

Application of high pressure water jet technique in cleaning drill rod;

高压水射流技术在清洗钻杆中的应用

Effect of friction welding, heat treatment technology on the microstructure and property for drill rod S135;

S135钻杆的摩擦焊接、热处理对其组织与性能的影响

Special clamp for dismantling drill rod of LM-120 type drilling machine;

LM—120型反井钻机钻杆拆卸特殊卡具

great lengths of drill pipe which are rotated by an engine at the top,

钻杆顶部安装的发动机带动钻杆旋转，

hard banding of tool joint

钻杆接头表面加硬圈

stacking capacity of derrick

井架的钻杆立根容量

plain clinometer

钻杆下部装的测斜仪

hard facing of tool joint

钻杆接头表面加硬层

shoulder dressing tool

钻杆接头端面整形工具

Defects Analysis on 37CrMnMo4 Drill Pipe Joints

37CrMnMo4钻杆接头缺陷分析

5.11 The drill collar O.D. is 7.5 inch, and the drill pipe O.D. is 5 inch.

钻铤外径为7.5” ，钻杆外径为5敗£

Simulation Research on Drill Pipe of 2000 Meter Water Well Rig;

2000m水井钻机的钻杆仿真研究

Experimental Model and Simulation Analysis on Drill Pipe of the Reconnaissance Drilling;

勘查钻进钻杆的实验模型与仿真分析

The Research of Using Drill Stem as Antenna in Telemetering System of Well-drilling;

以钻杆为天线的钻井遥测系统的研究

Control System Research of Pipe Racking System for the Drilling Platform

钻井平台钻杆自动排放控制系统研究

According to the drillpipe structural characteristics, a dolly appropriate for drillpipe and Kelly detection is designed, of which its probe is adjustable.

根据钻杆的结构特点,设计了探头距离可调的适用于圆钻杆和方钻杆的探测小车。

Application of pneumatic clip for oil drilling rig

新型气动钻杆卡瓦在钻井生产中的应用

Design and Application of Multifunctional Drill Stems Pneumatic Clip for Oil Drilling Rig

石油钻机多功能钻杆气动卡瓦的设计及应用

Research on the Drill Pipe Transportation Manipulator of Horizontal Directional Driller and the Control System

水平定向钻机钻杆输送机械手及控制系统研究

Research of Key Technology with Drilling Stem Fixed with Cable in Directional Drilling under Coal Mine

煤矿井下定向钻进通缆钻杆关键技术研究

Application of Triangular Drilling Rod to Gas Drainage Borehole Drilling in Medium Soft Seam

三棱钻杆在中软煤层顺层瓦斯抽排钻孔的应用