Analysis and Optimize Hydraulic Components of Self-oscillating Rotary Impact Drilling Tool

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (19) : 175-180.

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Analysis and Optimize Hydraulic Components of Self-oscillating Rotary Impact Drilling Tool

Lei Peng, Ni Hong-jian, Wang Rui-he, Song Hui-fang, Wang peng, Song Wei-qiang, Zhong Qiang

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Abstract

Self-oscillating rotary percussion drilling method which based on the knowledge of utilization efficiency of the hydraulic power can improve ROP is proposed, the core of the method is self-oscillating rotary impact drilling tool. Modulation mechanism of the self-oscillating hydraulic components was analyzed by large eddy simulation analysis. Using the orthogonal design, self-oscillation hydraulic components were optimized according to large eddy simulation analysis. Based on this, the self-excited oscillation rotary percussion drilling tool is developed. The field test results showed that the effect was better than the old tool, which indicated that the method of optimization self-excited oscillation hydraulic components is correct and feasible. This method provides a theoretical basis which can promote and accelerate the application of this tool, also provides a basis for the study of a related engineering field. The research has the theory and application value.

Key words

Larger eddy simulation / Structure optimization / Self-oscillating / Improve ROP / field application / Rock breaking methods

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Lei Peng;Ni Hong-jian;Wang Rui-he;Song Hui-fang;Wang peng;Song Wei-qiang;Zhong Qiang. Analysis and Optimize Hydraulic Components of Self-oscillating Rotary Impact Drilling Tool[J]. Journal of Vibration and Shock, 2014, 33(19): 175-180