1.
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。
2.
Ultrasonic Testing and Defect Analysis for Butt Weld of Square Drilling Pipe
方钻杆对接焊缝的超声波检测及缺陷分析
3.
which we circulate down the drill pipe.
即让泥浆顺着钻杆向下循环的方法。
4.
Bardine process
钻杆消除疲劳应力的方法
5.
As demonstrated in practice, the auger string hole straightening is the most effective.
实践证明,螺杆钻纠斜是最有效的纠斜方法。
6.
Method of PHA and Its Application in DST String Design
预先危险分析方法在钻杆测试中的应用
7.
Research of the Servo Control Method for the Thickening Part of Drill
钻杆加厚段检测系统伺服控制方法的研究
8.
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，
9.
Analysis and Improvement Studying of Middle-mast and Pulley-yoke Failure of Rotary Drilling Rig;
旋挖钻机中桅杆及滑轮架失效分析与改进方案探讨
10.
hard banding of tool joint
钻杆接头表面加硬圈
11.
Ingersoll-Rand jumbo column
英格索尔－兰德钻车托杆
12.
stacking capacity of derrick
井架的钻杆立根容量
13.
plain clinometer
钻杆下部装的测斜仪
14.
hard facing of tool joint
钻杆接头表面加硬层
15.
engine ,drill, dental, with swivel arm
牙科钻机,带旋转杆
16.
shoulder dressing tool
钻杆接头端面整形工具
17.
Defects Analysis on 37CrMnMo4 Drill Pipe Joints
37CrMnMo4钻杆接头缺陷分析
18.
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£