Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter

Abstract Compound percussive drilling technology is a new method to improve the rock‐breaking efficiency in deep hard formation. In order to study the rock‐breaking mechanism of compound impact drilling, the thermal‐structure coupling simulation of the dynamic rock‐breaking process with a single PDC...

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Autores principales:	Wei Wang, Gonghui Liu, Jun Li, Chunqing Zha, Wei Lian, Reyu Gao
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	compound percussive drilling cutting temperature MSE PDC cutter rock‐breaking efficiency Technology T Science Q
Acceso en línea:	https://doaj.org/article/f81b31e534ba42a7b7438da41bc9b113
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spelling	oai:doaj.org-article:f81b31e534ba42a7b7438da41bc9b1132021-12-02T05:24:30ZNumerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter2050-050510.1002/ese3.990https://doaj.org/article/f81b31e534ba42a7b7438da41bc9b1132021-12-01T00:00:00Zhttps://doi.org/10.1002/ese3.990https://doaj.org/toc/2050-0505Abstract Compound percussive drilling technology is a new method to improve the rock‐breaking efficiency in deep hard formation. In order to study the rock‐breaking mechanism of compound impact drilling, the thermal‐structure coupling simulation of the dynamic rock‐breaking process with a single PDC cutter was investigated by using ABAQUS software. The influence of impact parameters on the rock‐breaking performance and cutting temperature was analyzed. The results proved that the compound impact load changes the rock failure mode and improves the rock‐breaking efficiency. Compared with steady load cutting, the rock broken volume under compound impact increased by 7.5%, and the mechanical specific energy (MSE) decreased by 12.3%. As the axial impact load amplitude increases, the MSE increases gradually. With an increase in torsional impact load amplitude and impact frequency, the MSE decreases first and then increases, and the optimal torsional static load ratio is 0.3, and the optimal impact frequency is 30 Hz. In addition, the cutting temperature of the compound percussive drilling is higher than that of the steady load cutting, and it increases with the impact load amplitude and decreases with the frequency. For the three impact load waveforms—sine, triangle, and square in this paper, the rock‐breaking efficiency under the condition of sine waveform is the largest when the dynamic amplitude of the pulse force is fixed, and the cutting temperature under the condition of square waveform is the highest. Finally, based on the analysis of the rock‐breaking mechanism, a novel compound percussive drilling tool was designed and tested in the field.Wei WangGonghui LiuJun LiChunqing ZhaWei LianReyu GaoWileyarticlecompound percussive drillingcutting temperatureMSEPDC cutterrock‐breaking efficiencyTechnologyTScienceQENEnergy Science & Engineering, Vol 9, Iss 12, Pp 2364-2379 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	compound percussive drilling cutting temperature MSE PDC cutter rock‐breaking efficiency Technology T Science Q
spellingShingle	compound percussive drilling cutting temperature MSE PDC cutter rock‐breaking efficiency Technology T Science Q Wei Wang Gonghui Liu Jun Li Chunqing Zha Wei Lian Reyu Gao Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter
description	Abstract Compound percussive drilling technology is a new method to improve the rock‐breaking efficiency in deep hard formation. In order to study the rock‐breaking mechanism of compound impact drilling, the thermal‐structure coupling simulation of the dynamic rock‐breaking process with a single PDC cutter was investigated by using ABAQUS software. The influence of impact parameters on the rock‐breaking performance and cutting temperature was analyzed. The results proved that the compound impact load changes the rock failure mode and improves the rock‐breaking efficiency. Compared with steady load cutting, the rock broken volume under compound impact increased by 7.5%, and the mechanical specific energy (MSE) decreased by 12.3%. As the axial impact load amplitude increases, the MSE increases gradually. With an increase in torsional impact load amplitude and impact frequency, the MSE decreases first and then increases, and the optimal torsional static load ratio is 0.3, and the optimal impact frequency is 30 Hz. In addition, the cutting temperature of the compound percussive drilling is higher than that of the steady load cutting, and it increases with the impact load amplitude and decreases with the frequency. For the three impact load waveforms—sine, triangle, and square in this paper, the rock‐breaking efficiency under the condition of sine waveform is the largest when the dynamic amplitude of the pulse force is fixed, and the cutting temperature under the condition of square waveform is the highest. Finally, based on the analysis of the rock‐breaking mechanism, a novel compound percussive drilling tool was designed and tested in the field.
format	article
author	Wei Wang Gonghui Liu Jun Li Chunqing Zha Wei Lian Reyu Gao
author_facet	Wei Wang Gonghui Liu Jun Li Chunqing Zha Wei Lian Reyu Gao
author_sort	Wei Wang
title	Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter
title_short	Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter
title_full	Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter
title_fullStr	Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter
title_full_unstemmed	Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter
title_sort	numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single pdc cutter
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/f81b31e534ba42a7b7438da41bc9b113
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_version_	1718400449627815936

Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter

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