Results 11 to 20 of about 141,212 (290)
Research on the modulation mechanism and rock breaking efficiency of a cuttings waterjet
Energy Science & Engineering, 2019 The feasibility of a cuttings waterjet directly modulated in the bottom hole is discussed from the aspects of cuttings suction and rock‐breaking efficiency.
Peng Wang +5 more
doaj +2 more sources
Energy Science & Engineering, 2020 Jet breaking using a high‐pressure nozzle is one solution for breaking natural gas hydrate (NGH) formations, creating a larger breaking volume and fluidizing broken solid fragments.
Yang Tang +4 more
doaj +2 more sources
Improving the operational efficiency of drilling rock-breaking tools
E3S Web of Conferences, 2023 Improving the quality and volume of drilling is the main condition for advancing the growth of reserves of raw materials of the national economy and industry. Rock-breaking tools are the main and busiest part of drilling equipment. Most of the operational productivity of drilling equipment depends on the operation of a rock-breaking tool, the ...
Juraev Rustam +2 more
openaire +2 more sources
Study on rock breaking efficiency of special shaped cutters
IOP Conference Series: Earth and Environmental Science, 2022 Abstract The optimization of cutter shape has become one of the main innovation direction of PDC bit technology. At present, both domestic and foreign bit manufacturers have put forward various special shaped cutters to improve rock breaking efficiency.
Qi Peng +7 more
openaire +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
The rock damage mechanism of combined rock breaking with saw blade and conical pick
Scientific Reports, 2023 The combined rock breaking method with the saw blade and conical pick is proposed to improve the rock breaking efficiency. The numerical simulation of combined rock breaking with the saw blade and conical pick is established to investigate the rock ...
Zhiwen Wang +5 more
doaj +1 more source
Mechanistic Study of a Microwave Field-Controlled Static Crushing Agent for Efficient Rock Breaking
ACS Omega, 2022 The long reaction time and uncontrollable reaction process of the swelling agent in the process of rock breaking by static crushing agent lead to unsatisfactory efficiency and effect of rock breaking. This paper uses physical experiments to compare and analyze the changes in temperature and pressure of the hydration reaction under different microwave ...
Huabin Liu +5 more
openaire +2 more sources
Drilling performance analysis of impregnated micro bit [PDF]
Mechanical Sciences, 2022 The cutting mechanical properties of impregnated diamond bit depend on the performance of its cutting elements. Aiming at the factors affecting the cutting element performance of impregnated diamond bit, the laboratory rock breaking experiment of ...
D. Song +11 more
doaj +1 more source
Efficient 3D Visual Perception for Robotic Rock Breaking
2019 IEEE 15th International Conference on Automation Science and Engineering (CASE), 2019 In recent years, underground mining automation (e.g., the heavy-duty robots carrying rock breaker tools for secondary breaking) has drawn substantial interest. This breaking process is needed only when over-sized rocks threaten to jam the mine material flow.
Niu, Longchuan +3 more
openaire +2 more sources
Experimental study of the thermal reaming of the borehole by axial plasmatron [PDF]
, 2019 Purpose. To study rock spallation dynamics in the process of the borehole thermal reaming and analyze energy consumption of the borehole thermal reaming process by plasma jets of the axial plasmatron. Methods. Field experimental study of rock spallation
Dhunnoo, N +6 more
core +1 more source