Experimental research into the effect of some operation factors and rock properties on the rate of penetration [PDF]
, 2020 Purpose. The purpose of this research is to investigate the effect of weight on bit (WOB), rotary speed (RPM), and some rock properties on the rate of penetration (ROP). Methods.
Ali, Mahrous A.M. +4 more
core +1 more source
Evaluation of many load tests of passive rock bolts in the Czech Republic [PDF]
, 2017 Within the research project "FR-TI4/329 Research and development - creating an application system for the design and analysis of soil and rock anchors including the development of monitoring elements", an extensive stage of field load tests of rock bolts
Holý, Ondřej
core +2 more sources
Determination of the suitable drilling operating parameters in different geological formations El-Sharara Oil Field (South-Western Libya) [PDF]
, 2018 Purpose. The objective of this study is to determine the best operating conditions for the most notable drilling parameters (i.e. weight on bit (WOB), rotary drilling speed (RPM), and characteristics of drilling fluid) using field data obtained from El-
Abdellah, W, Boghdady, G, Sayed, M
core +1 more source
Bionic design and test of polycrystalline diamond compact bit for hard rock drilling in coal mine
, 2020 For hard rock drilling in coal mine, the drilling efficiency and service life of polycrystalline diamond compact bit are very low. To overcome these shortcomings, the bionic technology is applied to the design and processing of polycrystalline diamond ...
Chuanli Wang
semanticscholar +1 more source
Mathematics, 2022 Accurate, rapid and effective analysis of rock drillability is very important for mining, civil and petroleum engineering. In this study, a method of rock drillability evaluation based on drilling process monitoring (DPM) parameters is proposed by using ...
Shaofeng Wang +4 more
semanticscholar +1 more source
Use of the energy of parametric oscillations to improve drilling indices [PDF]
, 2011 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” system to improve drilling indices.
Bakenov +11 more
core +2 more sources
Improvment of safety conditions of unstable rock slopes through the use of explosives [PDF]
, 2008 The paper discusses operations aimed at creating a safer natural or man made rock slope by artificially inducing the displacement of unstable elements by blasting.
Casale, M. +2 more
core +3 more sources
Method for calculation of drilling-and-blasting operations parameters for emulsion explosives [PDF]
, 2019 Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well as physical and mechanical ...
Khomenko, O +3 more
core +1 more source
Study on the influence of drilling fluid filtration on stability of coalbed wellbore
Meikuang Anquan, 2021 Coal rock has many porous characteristics, such as cleavage, pore and so on. Drilling fluid is easy to invade into coal bed rock, which is easy to cause wellbore instability.
ZHANG Yi, CHEN Dong, ZHANG Hui, LIU Mengmeng, LIU Fu, WEI Kai
doaj +1 more source
Improvement of hole drilling technology for ore drawing intensification [PDF]
, 2018 Purpose. The improvement of hole drilling for increasing the mineral recovery ratio by ore drawing improvement through blasting. Methods. The drilling parameters were examined for rock dumps.
Gaponenko, I +3 more
core +1 more source