Modelling of high frequency vibro-impact drilling
Modelling of high frequency vibro-impact drilling
复制标题
高频振动冲击钻孔建模
DOI：
10.1016/j.ijmecsci.2013.08.009
复制
发表时间：
2015
影响因子：
7.3
通讯作者：
Pavlovskaia E
中科院分区：
文献类型：
--
作者：
Pavlovskaia E
本研究对振动冲击钻井系统进行了建模，并给出了两个选定模型之间的数值分析和比较的结果。第一个是现有实验钻机新开发的模型（三质量模型），第二个是简化的低维模型（Pavlovskaia 等人，2001 年 [22]），用于描述钻头和所钻地层之间的动态相互作用。本文根据系统响应分析确定了最佳加载参数，并研究了附加自由度对加载优化策略的影响。考虑三个主要控制参数，即所施加的静力、所施加的动态力的幅度和频率。我们的研究证实，当系统响应是周期性的、响应的频率与所施加的动态力的频率相同、并且静力的值小于所施加的动态激励的幅度时，可以获得最佳的级数率。该结果对于所考虑的两种模型均有效。同样在这两种情况下，对于较低的激励幅度值获得零进展率，并且平均进展随着动态幅度的增加而增加。这两个模型还预测了较高激励频率下的零进展速率。根据所进行的分析，可以得出结论，低维模型可以很好地估计最佳静力和动态力的幅度，并且可以用于钻井系统的操作控制，以在钻穿不同地层时调整加载参数。然而，最佳频率的选择应基于钻井系统更详细模型的预测，因为附加自由度会显着影响内部共振的结构，并且应将其考虑在内。
Modelling of the vibro-impact drilling system is undertaken in this study, and the results of the numerical analysis and comparison between two selected models are presented. The first one is a newly developed model of an existing experimental rig (three masses model) and the second one is a simplified low dimensional model (Pavlovskaia et al., 2001 [22]) created to describe the dynamic interaction between the drill-bit and the drilled formation. The optimal loading parameters are identified in this work based on the analysis of the system responses, and the influence of the additional degrees-of-freedom on the loading optimisation strategy is investigated. Three main control parameters are considered, and they are the applied static force, and the amplitude and the frequency of the applied dynamic force.Our investigations confirm that the best progression rates are achieved when the system response is periodic and the frequency of the response is the same as the frequency of the applied dynamic force, and the value of the static force is smaller than the amplitude of the applied dynamic excitation. This result is valid for both models considered. Also in both cases, zero progression rates are obtained for lower values of the excitation amplitudes and the average progression increases with the increase in the dynamic amplitudes. Both models also predict zero progression rates at the higher excitation frequencies.Based on the analysis undertaken, it can be concluded that the low dimensional model provides good estimates of the optimal static force and the amplitude of the dynamic force, and it could be used for the operational control of the drilling system to adjust the loading parameters while drilling through different formations. The choice of the optimal frequency, however, should be made based on the predictions of the more detailed model of the drilling system as additional degrees of freedom significantly influence the structure of the internal resonances and they should be taken into account.
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DOI：
10.1016/j.ijnonlinmec.2009.11.017
发表时间：
2010-11-01
影响因子：
3.2
作者：
Ajibose, O. K.;Wiercigroch, M.;Akisanya, A. R.
通讯作者：
Akisanya, A. R.
冲击空气钻井现场结果
DOI：
--
发表时间：
1965
期刊：
影响因子：
--
作者：
R. Bates
通讯作者：
R. Bates
影响因子：
4.7
作者：
E. Pavlovskaia;M. Wiercigroch
通讯作者：
E. Pavlovskaia;M. Wiercigroch
低频冲击在硬岩钻进中的作用
DOI：
--
发表时间：
1958
期刊：
影响因子：
--
作者：
E. Topanelian
通讯作者：
E. Topanelian