• Theoretical background of rock failure at hydraulic seam fracture and aftereffect analysis 

      Biletskyi, V; Horobets, L; Fyk, M; Al-Sultan, M (National Mining University, 2018-09-30)
      Purpose. Theoretical substantiation of the methodological foundations of possible effects and aftereffects identification of the hydraulic seam fracture (HSF) technology. Methods. The research structure and procedure ...
    • Use of the energy of parametric oscillations to improve drilling indices 

      Svitlytskyi, V; Ohorodnikov, P; Kovalchuk, Yu (National Mining University, 2018-09-30)
      Purpose. Increase of the efficiency of using energy of parametric oscillations within the assembly of drilling string bottom by means of solving nonlinear-parametric equations of a “bit – drive motor – drilled-out rock” ...
    • Ways to improve safety of a pumping-circulatory system of a drilling rig 

      Skitsa, L; Yatsyshyn, T; Liakh, M; Sydorenko, O (National Mining University, 2018-09-30)
      Purpose. To modernize a pumping-circulatory system of a drilling rig in order to improve the environmental safety data, reliability, and convenience during oil well construction. Methods. Methods of system analysis of the ...