1.
Analysis on balling up caused by helicoid hydraulic motor bypass valve failure in combined drilling technology
复合钻井过程中螺杆钻具旁通阀刺漏造成钻头泥包分析
2.
auger with valve
(钻浅井用) 带阀螺旋钻具
3.
Research of Screw Drill CAD/CAPP System Based on PDM;
基于PDM的螺杆钻具CAD/CAPP系统研究
4.
Research on the Modularize Design of Downhole Motors Based on Solidworks;
基于Solidworks的螺杆钻具模块化设计研究
5.
Remove stem nuts (22). Keep stem from turning by inserting screw driver in slot on end of stem.
拆卸阀杆螺母(22)。通过在阀杆末端的槽内插入螺丝刀来避免阀杆旋转。
6.
Design of CAT System for Screw Drilling Tools and Screw Drilling Motors
螺杆钻具、螺杆泵性能计算机辅助测试系统的设计
7.
ANALYZING SELF-LOCKING PHENOMENON OF PDM(POSITIVE DISPLALEMENT MOTOR) WITH BENT SUB IN SAIPING 1 WELL
塞平—1井所用单弯螺杆动力钻具自锁现象分析
8.
Design of the Data Acquisition and Management System on the Downhole-motors Testing Table;
螺杆钻具实验台数据采集管理系统设计
9.
The Hole Deviation Control Theory Analyses and Application on Positive Displacement Motor;
螺杆钻具控制井斜的理论分析与应用研究
10.
Structural Analysis and Optimum Design of Downhole Motor Based on CAE;
基于CAE的螺杆钻具结构分析及优化设计
11.
Analysis of Mechanics Performance and Life Prediction for Lobe Type Couplings of PDM
螺杆钻具万向轴力学特性分析及寿命预测
12.
Research and Application of the Techinic of Bridge Floor Treatment by Helicoid Hydraulic Motor
螺杆钻具处理塞面工艺技术研究及应用
13.
Structural analysis and improved design for transmission shaft of screw-drilling device
螺杆钻具传动轴的结构分析与改进设计
14.
Strength Analysis of Pressure and Torsion Combination Loads of Flapper Teeth of LTC
螺杆钻具瓣形万向轴瓣齿压扭组合强度分析
15.
The upper stem is threaded into the diaphragm retainer nut.
上阀杆通过丝口旋在横膈膜止动螺母里。
16.
Non-rotating Stem with precision Acme threads and burnished finish. Valve suitable for horizontal installation.
不旋转阀杆具有精密梯形螺纹和经过抛光的表面光泽度。
17.
Remove stem assembly (A) and lock setting by drilling hole and inserting dowel pin (C).
拆卸阀杆总成(A)，并且通过钻孔锁定设置和插入定位销(C)。
18.
Stem – machined stem has a backseat design.
阀杆-经过机加工的阀杆具有后座结构。