Minieiev S., Pazynich A., Hankevich V., Kiba V., Livak O., Akulinin D., Pronina H. Improving the performance properties of drill rods for drilling and blasting operations

Details
Parent Category: Geo-Technical Mechanics, 2025
Category: Geo-Technical Mechanics, 2025, Issue 172

Geoteh. meh. 2024, 172, 5-15

 

IMPROVING THE PERFORMANCEPROPERTIESOFDRILLRODSFOR DRILLING AND BLASTING OPERATIONS

 1Minieiev S.

1Pazynich A.

2Hankevich V.

3Kiba V.

 4Livak O.

 3Akulinin D.

 4Pronina H.

1M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine

2Branch for Physics of Mining Processes of the M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine

3Dnipro University of Technology

4Ukrainian State University of Science and Technologies

UDC 622.24.05;62-752

Language: English

Abstract. The article examines the operating conditions of drilling equipment, particularly drill pipes. The purpose of this study is to develop drill pipes based on the load they experience and the material they are made of. Factors influencing the wear of drill pipes are identified, including friction at pipe joints, thermal wear, abrasive wear, oxidative wear, and others. The working conditions and loads on drill pipes under various drilling scenarios are analyzed, including the maximum loads encountered during the drilling of hard rock using roller bits. The functions of drill pipes are considered, such as transmitting axial force and torque, transporting drilling fluid to the drilling site, removing rock debris from the wellbore. The study justifies and selects materials for drill pipes that balance strength and cost while meeting the requirements of drilling equipment. To achieve this goal, the stress-strain state of drill rods during rotary drilling under operational loads was studied, considering the displacement of working loads or the misalignment of the drill rod and bit axes. Mathematical calculations and data processing are performed using the engineering software package MATHCAD for drill pipes with an outer diameter of DD and an inner diameter of dd, depending on the physical and mechanical properties of the pipe material, axial load on the drill string, and the torque transmitted by the drill pipes. The article provides calculations for drill pipes used in roller drilling of 200 mm diameter wells in hard rock. Connections between drill pipes are analyzed, particularly a specialized locking threaded connection with an increased thread profile height. The study reviews designs used in international practice and domestic drilling equipment manufacturing. A design and calculation of the threaded connection for drill pipes made of 40X steel are presented, along with drawings of the calculated thread profile.

The operating conditions of drilling equipment and factors affecting the wear of drill pipes are examined, and recommendations for extending their service life are provided, which can be utilized in the design of new drilling equipment. Suggestions and structural solutions to enhance the performance characteristics of drill pipes are proposed, allowing the selection of optimal material parameters and structural elements of drill pipes based on the operating conditions of the drill string.

Keywords: drill pipe, drill string, roller drilling, critical loads, threaded connection.

REFERENCES

1. Biletskyi, V. S. (ed.) (2004), Mala hirnycha entsyklopediia v triokh tomakh [Concise Mining Encyclopedia in 3 volumes], Donetsk, Donbas, Ukraine.

2. Rymchuk, D. V., Ponomarenko, V. V., and Shudryk, O. L. (2019), Obladnanniadliaburinniasverdlovynivydobutkunaftytahazu [Equipment for drilling wells and oil and gas production], KhNADU, Kharkiv, Ukraine, available at: http://library.kpi.kharkov.ua/files/new_postupleniya/obdbsv.pdf (Accassed 17 October 2024).

3. Mysliuk, M. A., Rybchych, I. Y., and Yaremiichuk, R. S. (2002), Burinnia sverdlovyn [Well drilling], Kyiv, Ukraine.

4. Bondarenko, A. O. (2017), Hirnychi mashyny dlia vidkrytykh hirnychykh robit [Mining machines for surface mining], National Mining University, Dnipro, Ukraine, available at: https://ir.nmu.org.ua/server/api/core/bitstreams/0261f721-9659-4735-8b1e-c0d49337e2c6/content (Accassed 17 October 2024).

5. Nazarov, O., Hankevych, V., Pashchenko, O., and Kiba, V. (2020), “Shliakhy zmenshennia enerhoiemnosti i pidvyshchennia produktyvnosti pry burinni sverdlovyn” [Ways to reduce energy consumption and increase productivity in well drilling]. Metallurgical and Mining Industry, no. 2, pp. 10–19, https://doi.org/10.34185/0543-5749.2020-2-10-19.

6. Hankevych, V. F., Pashchenko, O. A., Livak, O. V., and Kiba, V. Ya. (2023), “Udoskonalennia tekhnichnykh rishen v umovakh voiennoi ahresii na prykladi zastosuvannia hidroudarnykiv v burinni”[Improvement of technical solutions under conditions of military aggression on the example of hydraulic impact tools in drilling], InternationalScientificConference,National TU Dnipro Polytechnic, Dnipro, Ukraine, 11–13 October 2023, pp. 54–56.

7. Minieiev, S. P., Antonchyk, V. Ye., Hankevych, V. F., Livak, O. V., Kiba, V. Ya., Kuts, O. V. and Zakharova, D. R. (2022), “Poshuk metodiv pidvyshchennia produktyvnosti burinnia sverdlovyn u mitsnykh hirskykh porodakh” [Search for methods to increase well drilling performance in hard rocks], Collection of Scientific Papers of the Iron and Steel Institute of Z.I. Nekrasov of NAS of Ukraine, no. 36, pp. 499–506, https://doi.org/10.52150/2522-9117-2022-36-499-506.

8. Pysarenko, H. S., Kvitka, O. L. and Umanskyi, Ye. S. (2004), Opir materialiv [Strength of materials], Vyshcha shkola, Kyiv, Ukraine, available at: https://btpm.nmu.org.ua/ua/download/%D0%9F%D0%B8%D1%81%D0%B0%D1%80%D0%B5%D0%BD% D0%BA%D0%BE%20%D0%93.%D0%A1.%20%D0%9E%D0%BF%D1%96%D1%80%20%D0%BC%D0%B0%D1%82%D0%B5%D1%80%D1%96%D0%B0%D0%BB%D1%96%D0%B2.pdf  (Accassed 17 October 2024).

9. Stachowiak, G.W. and Batchelor, A.W. (2019), Engineering Tribology, 4th ed., Butterworth-Heinemann, Elsevier, Oxford, UK.

10. Kostetskyi, B. I. (1984), Treniye, smazka i iznos v mashinakh [Friction, lubrication and wear in machines], Naukova dumka, Kiev, Ukraine.

 

About the authors:

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 under 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 0000-0002-4594-0915

Pazynich Artem,M.Sc., 1st category engineer, M.S. Poliakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine ORCID 0009-0003-6408-6800

Hankevich Valentin,Candidate of Technical Sciences (Ph.D.), Associate Professor at the Branch for Physics of Mining Processes of the M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID 0000-0002-8535-6318

Kiba Viacheslav, Senior Lecturer at the Department of Mechanical and Biomedical Engineering, Dnipro University of Technology, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID 0000-0003-3033-6106

Livak Oksana,Candidate of Technical Sciences (Ph.D.), Associate Professor at the 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. (Corresponding author) ORCID 0000-0002-5552-6531

Danylo Akulinin, Student, Faculty of Mechanical Engineering, Dnipro University of Technology, Dnipro, Ukraine, ORCID 0009-0003-6751-8533

Pronina Hanna, Candidate of Philological Sciences (Ph.D.), Associate Professor at the Department of Translation and Foreign Languages, 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 0000-0002-9057-1071