大位移井钻柱纵向振动理论计算与ANSYS分析  

THEORETICAL CALCULATION AND ANSYS ANALYSIS OF LONGITUDINAL VIBRATION FOR THE DRILLING STRING OF AN EXTENDED REACH WELL

作　　者：徐桃园[1] 张强[1] 沈曦[2] 郑伟[1] 

机构地区：[1]长江大学机械工程学院,湖北荆州434023 [2]中原油田,河南濮阳457000

出　　处：《石油工业计算机应用》2009年第4期16-19,共4页Computer Applications Of Petroleum

摘　　要：钻柱振动是导致钻柱失效、疲劳损坏的主要原因,本文结合钻柱动力学理论以及运动微分方程,并通过ANSYS软件对大位移井钻柱的纵向振动模型的建立和分析做了合理的假设,经过ANSYS分析计算得出大位移并全井段钻柱的振动规律,对钻柱的合理设计和正常钻进有一定的指导意义。Drill string vibration is the main cause for fatigue damage and failure.According to drill string kinetics theory and movement differential equation,the longitudinal vibration model for drill string of an extended reach well is established with ANSYS and a reasonable assumption is made.After ANSYS analysis and calculation,the vibration law for the drill string of whole hole section is obtained It is of significance for rational drill string design and normal drilling.

关 键 词：钻柱 纵向振动 减震器 模态分析 ANSYS 

分 类 号：O32[理学—一般力学与力学基础] TQ320.663[理学—力学]