首页> 外文会议>International Conference on Offshore Mechanics and Arctic Engineering 2007(OMAE2007) vol.2; 20070610-15; San Deigo,CA(US) >Using Active Circuits to Model Drillstrings and Analyze the Effect of Phase Shift on Stability Analysis
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Using Active Circuits to Model Drillstrings and Analyze the Effect of Phase Shift on Stability Analysis

机译:使用有源电路对钻柱建模并分析相移对稳定性分析的影响

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摘要

In recent years, deeper wells are drilled in order to reach untapped reserves. The long drillstrings needed for such wells are more susceptible to vibrations induced by instability. To study these vibrations, test rigs are employed. These rigs must represent the dynamics of the drillstring to be effective at predicting bit vibrations. In this paper, we show that active circuits can be used to simulate drillstring dynamics and study bit vibration characteristics. A circuit representing one such vibration mode was used to study the effect of phase shift on bit stability. It is also shown that such circuits can be incorporated in test rigs to provide real-time input to actuators replicating bit displacement.
机译:近年来,为了达到未开发的储量,已经钻了更深的井。这种井所需的长钻柱更容易受到不稳定引起的振动的影响。为了研究这些振动,采用了试验台。这些钻机必须代表钻柱的动力学,才能有效预测钻头的振动。在本文中,我们表明有源电路可用于模拟钻柱动力学和研究钻头振动特性。使用代表一种这样的振动模式的电路来研究相移对位稳定性的影响。还显示了可以将这些电路并入测试装置中以向执行器提供实时输入,以复制位位移。

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