The design and application of producing method pipe string with layer by layer

How to Enhance Reliability of Pipe String Work for Zonal Injection

提高分层注水管柱工作可靠性

Application of Spring Theory to Mechanics Analysis of Downhole Pipe String

弹簧理论在井下作业管柱力学分析中的应用

The dynamical analysis of rotating pipe string in well bore

井筒内旋转管柱动力学分析

Research and analysis have been made for buckling of long pipe string under gravity.

详细分析和研究了自重作用下竖直长管柱的屈曲问题。

Research and application of a new type separate layer water injection and testing pipe string

新型分层注水分层测试管柱研究及应用

Application of torque mechanics analysis of fishing pipe string in trouble well

事故井打捞管柱扭矩分析及其应用

Research and application of the closed matching exploitation pipe string in low productivity well

低产能油井（层）闭式配套开采管柱的研究与应用

Development and application of pipe string pressure testing advice for gas lift well

气举井管柱试压装置的研制与应用

Practice has proved that, Ansys drill string torsional vibration analysis results really have higher economic value, significant effect, and can improve the quality of engineering greatly.

实践证明，Ansys钻杆柱扭转振动分析成果具有较高的经济价值，极大地提高了钻探工程的质量，效果显著。

Rule and Application about Drill String Vibration of Extend Reach Well

大位移井钻柱振动规律及其应用

The definition of two special points of drill string and calculation methods

弹性钻柱两个特殊点的意义及计算方法

Study on Information and Power Transmission Based on An Intelligent Drill String

智能钻柱信息及电力传输系统的研究

Drill string design of drilling complex formations and its application technique study

复杂地层钻井的钻柱设计及使用技术研究

Study on Dynamic Characteristics and Failure Mechanism of Drill String in Air Drilling

气体钻井钻柱动力学特性及钻柱失效机理研究

Calculation and analysis of fatigue strength of drill string in deep well

深井钻柱疲劳强度计算与分析

The Application of Analytical Technology for Drill String Stress Wave Spectral

钻柱应力波频谱分析技术的应用

Study on measurement system for dynamic characteristics of drill string's bottom

钻柱近钻头力学特性测量系统功能研究

The Acquisition System For Drill String Vibration Signals And The Spectrum Analysis

钻柱振动信号采集系统及谱分析

Computer Simulation of Drill String, Bit and Rock System

钻柱、钻头与岩石系统计算机仿真

Drill string vibration was analyzed based on vibration theory and finite element method.

根据振动理论和有限元方法，研究了钻柱振动的模态。