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Modeling of drilling tool vibration in the process of drilling blast wells

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Category: Content №5 2024

Last Updated on 29 October 2024

Published on 30 November -0001

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Authors:

V.S.Morkun, orcid.org/0000-0003-1506-9759, University of Bayreuth, Bayreuth, Federal Republic of Germany, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

N.V.Morkun, orcid.org/0000-0002-1261-1170, University of Bayreuth, Bayreuth, Federal Republic of Germany, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

S.М.Hryshchenko*, orcid.org/0000-0003-4957-0904, State Tax University, Irpin, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Ye.Ye.Bobrov, orcid.org/0000-0002-9275-3768, Kryvyi Rih National University, Kryvyi Rih, Ukraine

A.A.Haponenko, orcid.org/0000-0003-1128-5163, Kryvyi Rih National University, Kryvyi Rih, Ukraine

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2024, (5): 012 - 018

https://doi.org/10.33271/nvngu/2024-5/012

Abstract:

Purpose. To determine the characteristic features and model bit vibration during its interaction with rock in the process of drilling technical (blast) wells in open pit mines.

Methodology. The following methods were used in the work: analysis of scientific and practical solutions; statistical methods for processing the results of experimental studies; methods of analytical synthesis; computer modeling methods for synthesis and analysis of mathematical models.

Findings. The process of interaction between a drill bit and a rock was analyzed. The conditions and causes of vibration of drilling equipment are determined. The spectral analysis of the vibration signal, the formation and analysis of the map of the order of rotation of the rotating parts of the drilling rig during the drilling of technical (blast) wells were performed to identify the bit in the frequency domain of the measured concomitant integrated vibration signal as a source of high-amplitude vibration. The modulated signal measured in the time domain at the specified frequency carries information about the physical and mechanical characteristics of the drilled rock and the state of the bit. The analysis of the experimental studies and modeling of the process of interaction of the bit with the rock allows us to conclude that the obtained statistical indicators of the accompanying vibration signal really adequately characterize the process of well drilling.

Originality. A method for determining the characteristics of the interaction of a drill bit with rock in the process of drilling technical (blast) wells based on measuring the parameters of the accompanying vibration signal is proposed. The method differs from the known ones in the fact that in the process of changing the operating mode of the drive of the rotating parts of the drilling rig, an order map is formed over the entire range of its revolutions, the frequency of high-amplitude vibration of the bit is determined, which corresponds to a certain peak order of revolutions, and at this frequency the statistical parameters of changes are measured.

Practical value. This approach to the process of drilling wells in open pit mines makes it possible to quickly determine the physical and mechanical characteristics of the drilled rock and adjust the process parameters accordingly to increase its productivity and energy saving.

Keywords: mine working, well drilling, chisel, vibration, parameters, modeling

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