基于ANSYS的钻柱纵向振动有限元分析及应用  

ANSYS-based finite element analysis method of longitudinal vibration of drilling string and its application

作　　者：魏水平[1] 况雨春[1] 夏宇文[1] 

机构地区：[1]西南石油大学钻头实验室,四川成都610500

出　　处：《河南石油》2006年第1期66-68,共3页Henan Petroleum

摘　　要：根据动力学理论建立钻柱动力学振动方程。把钻柱看作一个弹性直杆,建立几何模型;通过ANSYS软件分析,得出钻柱纵向振动的特性以及减振器的安放位置对钻柱纵向振动的影响。结果表明,减振器安装适当的位置,可以减少钻柱的纵向振动,从而减少和防止钻柱发生断、刺事故。Dynamic vibration equation of drilling string is established based on the theory of dynamics. Assuming that drilling string is an elastic straight pole, a geometric model is built. ANSYS software is used to analyze the characteristics of longitudinal vibration of drilling string and the influences of the position of vibration absorber placement on the longitudinal vibration of drilling string. The results show that properly positioning vibration absorber can alle-viate the longitudinal vibration of drilling string, thereby reduce or prevent drilling string breaking or splitting accidents.

关 键 词：钻柱 纵向振动 有限元分析 减振器 激振频率 

分 类 号：TE21[石油与天然气工程—油气井工程]