水力振荡器关键力学参数变化规律的研究

发布时间：2018-10-26 14:57

【摘要】：为了解决水平井、大位移井等复杂井钻进过程中出现的大摩阻、钻压拖拽等问题,设计了一种新型水力振荡器。根据水力振荡器的内部结构和工作特性,结合流体力学原理,对水力振荡器过流面积、压降、总轴向力关键力学参数的变化规律进行理论分析。选取某一规格水力振荡器的不同静阀孔径进行算例分析,结果表明在水力振荡器输入流量和入口压力一定时,静阀孔径大小与过流面积呈正比,与压降、总的轴向力呈反比;此外,通过改变流量至25L/s,进一步分析水力振荡器关键参数的变化规律。研究结论可为水力振荡器轴向振动分析提供理论支撑,为实现水力振荡器减摩降阻的功能提供技术指导。
[Abstract]:A new type of hydraulic oscillator is designed to solve the problems of large friction and drag of drilling pressure in complex wells such as horizontal wells and extended reach wells. According to the internal structure and working characteristics of the hydraulic oscillator and the principle of hydrodynamics, the variation law of the key mechanical parameters of the hydraulic oscillator such as the overcurrent area, the pressure drop and the total axial force is analyzed theoretically. The results show that when the input flow rate and inlet pressure of the hydraulic oscillator are constant, the diameter of the static valve is proportional to the overflowing area, inversely proportional to the pressure drop, and the total axial force is inversely proportional to the pressure drop. In addition, by changing the flow rate to 25 L / s, the variation of key parameters of the hydraulic oscillator is further analyzed. The conclusion can provide theoretical support for the analysis of the axial vibration of the hydraulic oscillator and provide technical guidance for the realization of the function of reducing friction and resistance of the hydraulic oscillator.
【作者单位】：中石化石油工程机械有限公司研究院;中石化石油机械装备重点实验室;西南石油大学机电工程学院;
【基金】：基金项目:中石化集团公司先导科技项目—水力振荡器工具先导性试验(JPJ11003)
【分类号】：TE927

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