This paper analyzed the practical situation of drilling string lateral vibration during drilling, established mechanical model.

文章针对钻井工程中钻柱横向振动的实际情况, 建立力学模型.

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Decreasing friction of drilling string is a key to finish drilling in slim hole.

减少钻柱扭矩,防止套管磨损的方法之一是使用非旋转钻杆保护器.

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At present, axial load and excited origin of drilling string lateral vibration is usually neglected.

目前对钻柱横向振动的研究基本上忽略了横向振动的激发来源和轴向力的存在.

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Dynamic vibration equation of drilling string is established based on the theory of dynamics.

根据动力学理论建立钻柱动力学振动方程.

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