机械科学与技术2017，Vol.36Issue(5)：690-696,7.DOI:10.13433/j.cnki.1003-8728.2017.0506
水力振荡器振动特性分析
The Vibration Characteristics Analysis of Hydraulic Oscillator
摘要
Abstract
Aiming at the problem of large friction between the drill string and borehole,a hydraulic oscillator of axial vibration antifriction was put forward in this paper.According to the working principles and structural design of hydraulic oscillator,its equations of motion and mechanical properties were analyzed,and the vibration equation of hydraulic oscillator was established in the horizontal well.The analysis of calculation example indicated the frequency of flow area change was proportional to the flow rate,the flow area increased with the increase of the static valve hole diameter,the total axial force decreased with the increase of the static valve hole diameter,the vibration displacement decreased with the increase of static valve hole diameter and installation location and coefficient of friction.The conclusions provide important references for reducing friction,increasing speed and field applications of hydraulic oscillator.关键词
水力振荡器/振动/钻井/提速/水平井/摩擦Key words
hydraulic oscillator/vibrations/drilling/friction/design/mechanical properties/equations of motion/calculation分类
能源科技引用本文复制引用
田家林,李友,杨志,杨琳,余长柏,付传红,朱永豪..水力振荡器振动特性分析[J].机械科学与技术,2017,36(5):690-696,7.基金项目
国家自然科学基金项目(51674216)、国家科技重大专项(2016ZX05038)及国家留学基金项目(201608515039)资助 （51674216）
