drill stem

Bent beam unit analysis of drill stem deformation in horizontal well

水平井钻柱受力变形分析的曲梁单元

The calculation of critical compressive force of drill stem in horizontal well

水平井眼中受压钻柱的临界载荷计算

The analysis of buckling load of the horizontal drill stem

水平钻柱屈曲载荷的分析计算

Application of turbulent sensor in study of movement state of lower portion of drill stem

涡流式传感器在下部钻柱运动状态研究中的应用

Analysis of Frictional Effect on the Drill Stem Stability in Horizontal Wells

考虑摩擦时水平井钻柱的稳定性分析

Hydrogen induced stress corrosion of drill stem elements

石油钻具的氢致应力腐蚀及预防

Non-linear geometric analyzing of drill stem drag force in horizontal well

水平井钻柱摩阻力几何非线性分析研究

Automated centering system for drill stem friction welding machine

石油钻杆摩擦焊自动对中系统

Influence of drilling fluid damp on dynamic destabilization of drill stem

钻井液阻尼对钻柱动力失稳的影响

Analysis of Torsional Stress of Drill Stem Double Shoulder Connector

钻杆接头双台肩抗扭应力分析

Discussion on Chaos in Longitudinal Vibration of Petroleum Drill Stem

石油钻柱纵向振动的混沌问题讨论

Pick up drill stem test tool.

提起钻柱测试工具.

Charge/ Discharge Manipulator of Friction Welding Geological Drill Stem

摩擦焊接地质钻杆上下料机械手的设计

A Corrosion Mechanism Research of Drill Stem in Double Salt Drilling Fluid

复合盐钻井液对钻具的腐蚀机理研究

Study on the mechanism of montmorillonite adsorption on the surface of drill stem by electrochemical method

用电化学方法研究蒙脱土在钻具表面吸附的机理

Investigation on Failure Mode and Safety Toughness Criterion for Drill Stem Elements

钻柱构件失效模式与安全韧性判据的研究

The effect of initial deflection on nonlinear lateral vibration of drill stem

初弯曲对钻柱横向非线性振动的影响

Application of laser rigidification technique in strengthening drill stem joint

激光硬化技术在强化钻杆接头中的应用

Predicting fatigue life in consideration of drill stem movement behaviours

考虑钻柱运动状态的疲劳寿命预测研究

Analysis of influence factor on accuracy of drill stem testing data interpretation

影响气层中途测试资料解释准确性的因素分析

The longer the single drill pipe , the lesser the critical compressive force of drill stem.

钻杆的单根长度越长, 钻柱所能承受的临界载荷越小.

Failure cause and preventive measures of drill stem

钻柱失效原因及预防措施

The stability analysis of horizontal drill stem

水平钻柱的稳定性分析

An analysis of the lateral force between casing string and drill stem

套管柱与钻柱间侧向力的分析

Calculating results show that fluctuation pressure decrease with eccentricity between drill stem and well bore increase.

计算结果表明:随钻柱与井眼间偏心度增大,波动压力减小.全偏心情况下的波动压力大约只有同心情况下的一半.

ADAMS Dynamic Simulation of Drill Stem in Rotating Course

钻杆转动过程的ADAMS动力学仿真

Dynamic Instability of Drill Stem ON THE FORCE

钻柱的动力不稳定性

Internal Combustion Rock Drill Stem Throttle Parts of Structure to Improved Operational

内燃凿岩机柄体部件油门操作机构的结构改进

This method can be used for reference in drill stem design and surface equipment selection.

该结论可用于指导钻柱设计和地面设备选择等。

The drill fluid in the drill stem increases the inertia of lateral vibration.

钻柱内的钻井液增加了钻柱横向振动的惯性质量.