Use of hydromonitor roller bits for drilling blast boreholes
https://doi.org/10.32454/0016-7762-2025-67-2-134-140
EDN: XSTCQL
Abstract
Background. Blast boreholes can be drilled using various drilling tools. The drilling efficiency of roller bits (up to 30 m per shift in Azerbaijan) is significantly higher than that of other drilling tools (10—15 m per shift), which explains their wider application.
Aim. To improve the technology of blast borehole drilling by applying hydromonitor bits with the purpose of increasing the drilling efficiency.
Material and methods. The process of blast borehole drilling was analyzed, with a focus on changes in the pressure in the borehole under the influence of a high-pressure jet flowing out of the nozzles of a hydromonitor roller bit. When solving the problem of increasing the drilling efficiency of such boreholes, attention is paid to the use of hydromechanical destruction of the borehole bottom.
Results. The conducted analysis showed that sharp changes in the pressure in rock pores lead to compression of the liquid contained therein. This creates a hydraulic shock, which expands the pore walls and destroys them. The introduction of a high-pressure jet of washing fluid in the borehole bottom contributes to improving the control of the drilling process.
About the Authors
R. S. Ibrahimov
Azerbaijan State University of Oil and Industry
Azerbaijan
Competing Interests:
Azerbaijan
Rafiq S. Ibrahimov — Cand. Sci. (Tech.), Assoc. Prof. of Oil and Gas engineering departament, Azerbaijan State Oil and Industrial University.
34, Azadlig Ave., Baku AZ1010
Competing Interests:
None
Sh. O. Bahshalieva
Azerbaijan State University of Oil and Industry
Azerbaijan
Competing Interests:
Azerbaijan
Shirin O. Bahshaliyeva — Cand. Sci. (Tech.), Assoc. Prof. of Oil and Gas engineering departament, Azerbaijan State Oil and Industrial University.
34, Azadlig Ave., Baku AZ1010
Competing Interests:
None
P. V. Suleymanova
Sumgait State University
Azerbaijan
Competing Interests:
Azerbaijan
Parvana V. Suleymanova — PhD in Chemistry, Senior Lecturer of Department of Engineering Chemistry and Ecology, Sumgait State University of Azerbaijan.
1, Baku str., Sumgait AZ5008
Competing Interests:
None
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Review
For citations:
Ibrahimov R.S., Bahshalieva Sh.O., Suleymanova P.V. Use of hydromonitor roller bits for drilling blast boreholes. Proceedings of higher educational establishments. Geology and Exploration. 2025;67(2):134-140. (In Russ.) https://doi.org/10.32454/0016-7762-2025-67-2-134-140. EDN: XSTCQL
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