摘要
为深入研究钻井参数对深井钻柱自激粘滑振动规律的影响,本文根据拉格朗日理论建立钻柱系统自激粘滑振动方程,结合Stribeck摩擦曲线给出钻头与地层间摩擦扭矩表达式,采用闭环控制方法给出转盘转速控制方程。利用编制的Matlab程序详细分析了转盘转速、钻柱长度、钻压、摩擦系数及系统粘性阻尼对粘滑振动的影响,并通过室内实验对部分参数模拟结果进行验证。
引文
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