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首页> 外文会议>International Conference on Textile Engineering and Materials >Analysis of the Influences of drilling fluid flow velocity inside and outside the drilling string on drilling string lateral vibration frequency
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Analysis of the Influences of drilling fluid flow velocity inside and outside the drilling string on drilling string lateral vibration frequency

机译：钻孔钻柱内外钻孔流体流速对钻弦横向振动频率的影响分析

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摘要

Drilling string lateral vibration is a severe damage, which is influenced by many complex factors. This paper makes a theoretical analysis of the drilling string lateral vibration frequency caused by drilling fluid flow velocity inside and outside the drilling string, which supplies some evidence for calculating rotation speed of rotary table and reduces the times of drill string resonance. The influence of drilling fluid flow velocity inside the drilling string on lateral vibration frequency is analyzed by Euler method. Besides, through the use of mechanical analysis method and the introduction of additional mass coefficient. A differential equation of drilling string lateral vibration with the consideration of drilling fluid flow velocity inside and outside the drilling string is built up, and a mathematical model of drilling string lateral vibration under the influence of drilling fluid flow velocity is obtained. Field applications indicate that this model is in agreement with the field condition.
机译：钻弦横向振动是严重的损害，这受许多复杂因素的影响。本文对钻柱内外钻井液流速引起的钻弦横向振动频率进行了理论分析，该钻柱钻井速度引起的，这为计算旋转台的转速并减少了钻柱共振的次数来提供一些证据。通过欧拉法分析了钻柱内钻柱内部钻孔流体流速的影响。此外，通过使用机械分析方法和引入额外的质量系数。建立了钻孔横向振动的微分方程，考虑到钻柱内外钻孔流体流速，获得钻孔流体流速影响下的钻柱横向振动的数学模型。字段应用程序表明此模型与现场条件一致。

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