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The abrasion mechanism and cause analysis for straight well rod string;

直井抽油杆柱磨损机理及原因

The dynamics simulation of rotating rod string in well bore;

井筒内旋转抽油杆柱动力学仿真

A three-dimensional dynamic simulation model of rod string in actual borehole was established based on the characteristics of actual well track and system dynamics theory.

根据实际井眼轨迹的特征及系统动力学理论建立了抽油杆柱在实际井眼中的动态仿真模型。

Prediction of serious abrasion position and mechanism of uneven abrasion between sucker rod string and tubing;

抽油杆柱与油管偏磨机理及偏磨点位置预测

Velocity distribution model of annular flow and computing model of liquid friction of the sucker rod string were established according to constitutive equation and momentum conservation equation of the power law fluid of polymer flooding rod pumping systems.

应用幂律流体本构方程和动量守衡方程,建立了抽油机井杆管环空幂律流体速度分布规律与杆柱液体摩擦力的计算模型,以此为基础建立了聚合物驱抽油杆柱纵向振动仿真的非线性波动方程。

According to working characteristics of a surface driving screw pump system,torsion load and axial force of sucker rod string which is analyzed and calculated in this article.

结合螺杆泵抽油系统的工作特点,对抽油杆柱的扭转载荷与轴向载荷进行了分析和计算,结合第四强度理论,对杆柱强度条件进行了分析。

The principle of rod buckling and the eccentric wearing status of rod were analyzed.

对杆柱屈曲的原因、规律和偏磨状态以及偏磨机理进行了分析,研制并应用聚合物驱低摩阻柱塞泵解决了摩阻小、漏失量也小的难题。

A support for a beam in the framework of a building.

柱，杆建筑物框架中横梁的支撑物

a tent, flag, telegraph, etc pole

帐篷支柱、 旗杆、 电线杆

single-enveloping worm gear

圆柱[单头]蜗杆传动

double-column screw type supercharge device

双柱丝杆式加压装置

slack adjuster worm plunger

减速调整器蜗杆柱塞

circular tooth and cylindrical worm reducer

圆弧齿圆柱蜗杆减速机

base cylinder of involute helicoid worm

渐开线蜗杆基圆柱面

Connections with waisted stud--Studs

GB/T13807.2-1992腰状杆螺柱连接副螺柱

bolting (screwing) machine (excl. hand tools)

杆柱（螺杆）安装机（手持工具除外）

A Dynamics Study on Surface-driving Progressing Cavity Pump of Oil Production System;

地面驱动螺杆泵井抽油杆柱力学研究

Exploration into replacement of steel masts by lateral web - stiffened pre - stressed concrete masts;

横腹杆式预应力混凝土支柱代替钢支柱的探讨

Reinforcement Mechanism of Anchored Bolt for Coal Pillar and Analysis of Influence Factors of Pillar Strength

煤柱锚杆加固机理与煤柱强度影响因素分析

Dynamics Analysis and Numerical Simulation of Structures of Rod String for Cavity Pump System;

螺杆泵杆柱结构动力学分析及数值仿真

Study on the Working Condition Diagnosis of Screw Pump Well and Optimization and Design Method of Sucker Rod String;

螺杆泵井工况诊断及杆柱优化设计方法研究

Prediction of Sucker Rod String Dynamic Characteristics and Computer Simulation Research for Rod Pumping System;

有杆抽油系统杆柱动特性的预测与计算机仿真

Method of Rod Design of Screw Pump Gas Production

螺杆泵排水采气杆柱强度设计方法研究

Stress Analysis of Sucker Rod and Application of Heavy-weight Rod in Directional Well

定向井抽油杆柱应力分析及加重杆的应用

A rail and the row of balusters or posts that support it, as along the front of a gallery.

栏杆横栏和一排栏杆或支撑柱，如沿长廊前部的栏杆