一种新型流体附壁自激式水力振荡器及其射流振荡特性

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摘要为了降低钻进过程钻柱与井壁间的摩阻，有效改善托压、卡钻现象及提高有效钻压，设计了一种流体附壁自激式水力振荡器，其可使钻柱发生周期性轴向振动，改变钻柱与井壁间的摩擦形式，提高作业效率。通过理论分析和数值模拟方法阐述了装置原理，利用理论力学分析和Matlab编程方法建立轴向振动工况下管柱摩擦力数学模型；采用有限元数值模拟方法对振荡器进行参数敏感性分析，利用全尺寸物模试验对不同排量下装置的振动特性进行实测分析，并在连续油管加深钻进工程应用中验证了装置的振动减阻效果。结果表明：进出口比对装置入口压力的变化较为敏感，振荡腔腔长和排量对装置入口压力及频率均较为敏感；进出口比和排量的变化对减阻效率影响明显，进出口比与减阻效率呈负相关，排量与减阻效率呈正相关；装置入口压力极值、幅值随排量增大呈增长趋势，装置轴向振动位移幅度与泵注排量呈正相关；该装置可使连续油管钻井进尺速度提高128.6%，提速效果明显。研究结果可为流体附壁自激式水力振荡器的工业化应用提供依据。

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	艾白布?阿不力米提1
	2
	刘永红1
	庞德新2
	焦文付2
	郭新维2

关键词 ：自激脉冲, 附壁效应, 敏感性分析, 全尺寸试验, 现场应用

Abstract：In order to reduce the friction between the drill string and the borehole wall during the drilling process, effectively improve the back pressure and sticking phenomenon and increase the effective WOB, a fluid-attached self-excited hydraulic oscillator was designed, which can make the drill string cycle The axial vibration can change the form of friction between the drill string and the well wall and improve operation efficiency. The principle of the device is explained through theoretical analysis and numerical simulation. The mathematical model of the friction force of the pipe string under axial vibration is established by theoretical mechanics analysis and Matlab programming method; the finite element numerical simulation method is used to analyze the parameter sensitivity of the oscillator, using The full-scale physical model test conducted actual measurement and analysis of the vibration characteristics of the device under different displacements, and verified the vibration drag reduction effect of the device in the application of coiled tubing deepening drilling. The results show that the inlet/outlet ratio is more sensitive to the change in the inlet pressure of the device, and the cavity length and displacement of the oscillation cavity are more sensitive to the inlet pressure and frequency of the device; changes in the inlet/outlet ratio and displacement have a significant impact on the drag reduction efficiency. It is negatively correlated with drag reduction efficiency, and the displacement is positively correlated with drag reduction efficiency; the extreme value and amplitude of the device inlet pressure increase with the increase of displacement, and the axial vibration displacement amplitude of the device is positively correlated with the pump displacement; the device The footage speed of coiled tubing drilling can be increased by 128.6%, and the speed-increasing effect is obvious. The research results can provide a basis for the industrial application of fluid-attached self-excited hydraulic oscillators.
Key words:Self-excited pulsed; Conda effect; Sensitivity analysis; The full-size test; Field application

Key words： Self-excited pulsed Conda effect Sensitivity analysis The full-size test Field application

收稿日期: 2021-08-25 出版日期: 2022-09-15

引用本文:

艾白布?阿不力米提1,2,刘永红1,庞德新2,焦文付2,郭新维2. 一种新型流体附壁自激式水力振荡器及其射流振荡特性[J]. 振动与冲击, 2022, 41(17): 193-203.
ABULIMITI Aibaibu1,2, LIU Yonghong1, PANG Dexin2, JIAO Wenfu2, GUO Xinwei2. A new type of fluid wall attached self-excited hydraulic oscillator and its jet oscillation characteristics. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(17): 193-203.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I17/193

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