Antonchik V., Hankevych V., Maltseva V., Pashchenko O., Minieiev S., Kiba V, Livak O., Velihina N. Universal hydropneumatic shock absorber for drill column

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Parent Category: Geo-Technical Mechanics, 2024
Category: Geo-Technical Mechanics, 2024, Issue 168

Geoteh. meh. 2023, 168, 5-16 

UNIVERSAL HYDROPNEUMATIC SHOCK ABSORBER FOR DRILL COLUMN

1Antonchik V., 2Hankevych V., 1Maltseva V., 2Pashchenko O., 1Minieiev S., 2Kiba V, 3Livak O., 2Velihina N.

1M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine
2Dnipro University of Technology
3Ukrainian State University of Science and Technologies

UDC 622.24.05;62-752

Language: English

Abstract. This article addresses the protection of drill column and drilling equipment from mechanical vibrations transmitted from the drilling bit during rock drilling. Axial and tangential vibrations can exceed the axial feed force by four times, and their frequency can be three times higher than the rotation frequency of the drill bit. These fluctuations can lead to equipment wear, improper hole formation, reduced work safety, and decreased overall productivity of drilling operations. Therefore, understanding the issue and implementing a vibration control system are crucial for achieving optimal productivity and ensuring safety in drilling operations.

The purpose of this article is to develop a shock absorber that reduces forces from both axial and tangential vibrations of the drilling pond during rock drilling, whether using roller bits or cutters.

To achieve this goal, an analysis of known methods and mechanisms for damping these vibrations was conducted, considering both the axial pressure of the drilling tool on the bottomhole and the torque applied to the drilling tool. The shortcomings of existing devices for damping axial and circumferential vibrations were identified. The duration of the bottomhole pulse impact and the duration of the full cycle of oscillations of the bit and shock absorber resulting from compression and expansion of the spring were calculated. It was determined that the shock absorber prolongs the duration of the bottomhole impulse, smoothly increasing and decreasing the force from the axial load. The article explores means of damping mechanical vibrations in drilling equipment and suggests potential avenues for development. A design for a universal hydropneumatic shock absorber was developed to maximize damping of both axial and circumferential vibrations, suitable for drilling with both ball bits, where significant axial load predominates, and cutting bits, where significant torque is applied along with the axial load. The advantages of this hydropneumatic shock absorber's operation method and its ability to work using both compressed air and liquid pressure for vibration damping and removal of debris are described."

Keywords: hydropneumatic shock absorber, drill column, drilling bit, longitudinal and tangential vibrations, elastic element.

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About the authors:

Antonchik Volodymyr, Chief Designer of the Department of Dynamic Machines for Mining Pressure Manifestations, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0002-4161-9112.

Hankevуch Valentyn, Candidate of Technical Sciences (Ph.D.), Associate Professor at the Department of Engineering and Design in Mechanical Engineering, Dnipro University of Technology, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. ,
ORCID 0000-0002-8535-6318.

Maltseva Vira, Leading Engineer of the Department of Management at Dynamic Manifestations of Rock Pressure, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine.

Minieiev Serhii, Doctor of Technical Sciences (D.Sc.), Professor, Head of the Department of Management of Dynamic Manifestations of Rock Pressure, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID: 0000-0003-1056-3352.

Kiba Viacheslav, Senior Lecturer of the Department of Construction, Theoretical and Applied Mechanics, Dnipro University of Technology, Dnipro, Ukraine.

Livak Oksana, Candidate of Technical Sciences (Ph.D.), Associate Professor in Department of Materials Science, Ukrainian State University of Science and Technologies (USUST), Dnipro, Ukraine,  This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0002-5552-6531.

Velihina Nataliia, Candidate of Philology (Ph.D.), Associate Professor in Department of Foreign Languages, Dnipro University of Technology, Dnipro, Ukraine,  This email address is being protected from spambots. You need JavaScript enabled to view it. .