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首页> 外文期刊>Journal of Mechanical Science and Technology >Vibration analysis of new drill string system with hydro-oscillator in horizontal well
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Vibration analysis of new drill string system with hydro-oscillator in horizontal well

机译：水平井新型带水力振荡器的钻柱系统的振动分析

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摘要

With the growth of oil and gas resource demand, the hydro-oscillator is widely used to enhance the Rate of penetration (ROP) and improve the efficacy in drilling various wells. The vibration model is the key issue of dynamics analysis and optimization of downhole tools. For the vibration analysis of the new drill string system with hydro-oscillator in the horizontal well, based on the design of the new hydro- oscillator and its operation conditions, the kinematics expressions are presented. Combined with the vibration force calculation results of the hydro-oscillator, the dynamics model of the new drill string system is established. Furthermore, the important features of vibration frequency, displacement, velocity and acceleration are discussed in the numerical example calculation results. By comparing the results of the calculation and experiment test, we can verify the correctness of the analysis model. With the hydro-oscillator vibration effect, the static friction between the drill string and wellbore is changed to the dynamic friction, so it can result in a significant increase in run length. At the same time, the ROP can be enhanced with the vibration effect. Moreover, with the parameters' adjustment according to the operation conditions, the analysis method and model can also provide references to the study of similar downhole tools dynamics or mechanical properties.
机译：随着油气资源需求的增长，水力振荡器被广泛用于提高渗透率（ROP）和提高钻探各种井的效率。振动模型是井下工具动力学分析和优化的关键问题。为了对新的水平井中带有水力振荡器的钻柱系统进行振动分析，基于新的水力振荡器的设计及其运行条件，给出了运动学表达式。结合液压振荡器的振动力计算结果，建立了新型钻柱系统的动力学模型。此外，在数值示例计算结果中讨论了振动频率，位移，速度和加速度的重要特征。通过比较计算结果和实验测试的结果，我们可以验证分析模型的正确性。借助水力振荡器的振动效果，钻柱与井眼之间的静摩擦变成了动摩擦，因此可以显着增加行程长度。同时，ROP可以增强振动效果。此外，根据工作条件调整参数，分析方法和模型也可为类似井下工具动力学或力学性能研究提供参考。

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