Перегляд Volume 12, Issue 3 по назві
Зараз показуються 8-14 з 14
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Power consumption of rock decomposition process during diamond core drilling using pulse flushing
(National Mining University, 2018-09-30)Purpose. To study the impact of pulse flushing on the power consumption of rock decomposition during diamond core drilling. Methods. Theoretical analysis, processing of the obtained experimental data. Findings. The ... -
Reconstruction of the primary organic productivity of Campano-Maastrichtian shales of Nkporo and Aptian-Albian Awi Formations, Calabar Flank using pigment yield index
(National Mining University, 2018-09-30)Purpose. To derive the paleo organic productivity exemplified by the pigment yield index in order to resolve the controversy on the petroleum potentials of Nkporo and Awi Formations in Calabar Flank, Southeastern ... -
Simulation of sample testing under compression with the help of finite-element model of rocks being broken
(National Mining University, 2018-09-30)Purpose of the paper is to develop mathematical model describing nature of argillous and salt samples under compression and to make available microdefects using finite-element method. Methods. To simulate behaviour of ... -
Study of the plasma flow interaction with the borehole surface in the process of its thermal reaming
(National Mining University, 2018-09-30)Purpose. Study of the plasma flow interaction with the borehole surface in the process of its thermal reaming for determination of transient temperature distribution along the borehole surface and the average coefficient ... -
Theoretical background of rock failure at hydraulic seam fracture and aftereffect analysis
(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
(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
(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 ...