自振阀式低压脉冲射流调制器振动特性仿真研究
Journal of China University of Petroleum(Edition of Natural Science)(2007)
Abstract
基于脉动低压波克服井底压差提高钻速的机理,并根据自振阀式低压脉冲射流调制器的工作原理,利用Matlab环境下的Simulink系统建立了调制器液压振动力学的计算机仿真模型,对调制器的阀系运动进行了运动仿真。结果显示,调制器上阀和下阀协调振动具有可行性,调制器振动频率随钻头压降的增大线性增加,随钻井液流量、下阀质量、上阀行程的增加而减小。
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Key words
Jet,Low-pressure pulse,Modulator,Simulation,Vibration characteristics
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