Self-Excited Vibrations of Drillstrings

钻柱自激振动

• 批准号: 9118421
• 负责人: Donald Dareing
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-06-01 至 1992-08-15
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9118421&HistoricalAwards=false
• 关键词: Self; Excited; Vibrations; Drillstrings

The objective of the proposed analytical research is to develop a technical basis for predicting the limit of dynamic stability of drill bits used in various earth boring operations. The investigation will incorporate the combined effects of axial, torsional and lateral modes in the analysis of bit motion and in the determination of the limit of dynamic stability. A study of the effects of mode coupling will show which modes of vibration are critical and lead to practical methods of changing the structural stability of the drilling system. The knowledge gained from this research will provide a technical guidance for reducing drillstring failures and increasing penetration rate.

拟议的分析研究的目的是制定一个 动力稳定极限预测的技术基础 用于各种钻地作业的钻头。的 研究将包括轴向的组合效应， 在钻头运动分析中， 动稳定极限的确定。研究 模式耦合的影响将显示哪些振动模式 是至关重要的，并导致实际的方法来改变 钻井系统的结构稳定性。获得的知识 本研究将为减少 钻柱故障和增加的穿透率。