Results 41 to 50 of about 143,249 (287)
Numerical Simulation of Rotary Impact Rock-Breaking Process of a Full-Size Drill Bit
Shiyou jixie, 2023 As the key fundamental aspect of rotary impact drilling technology, the mechanism of rock breaking has not been well demonstrated, which limits the application of this technology.To illustrate the rotary impact rock-breaking process, the numerical ...
Yan Yan +5 more
doaj
Ultrasonic-Assisted Rock-Breaking Technology and Oil and Gas Drilling Applications: A Review
Energies, 2022 High-efficiency rock-breaking is a problem that has long been studied in the oil- and gas-drilling industry. The successful use of ultrasonic technology in related fields has prompted us to study how to introduce ultrasonic technology into rock-breaking ...
Jinyu Feng +3 more
doaj +1 more source
A modern vision of simulation modelling in mining and near mining activity [PDF]
, 2018 The paper represents the creation of the software simulation system, which reproduce the basic processes of mining and near production. It presents the consideration of such systems for both traditional and non-traditional
Cabana, Edgar +12 more
core +1 more source
Applied Sciences, 2023 Button cutters are commonly used in hard rock drilling because the inserted carbide buttons provide exceptional wear resistance, impact resistance, and high strength in challenging geological formations.
Yanan Ma +4 more
doaj +1 more source
The rock cutting simulation of heterogeneous granite using FDEM method
PetroleumMany advanced rock breaking methods are emerged form improving the ROP in deep formation drilling in recent years, such as electric pulse rock breaking, ultrasonic rock breaking and hydraulic rock breaking.
Weiji Liu +4 more
doaj +1 more source
The rock breaking and ROP increase mechanisms for single-tooth torsional impact cutting using DEM
Petroleum Science, 2019 Torsional impact drilling is a new technology which has the advantages of high rock-breaking efficiency and a high rate of penetration (ROP). So far, there is no in-depth understanding of the rock-breaking mechanism for the ROP increase from torsional ...
Xiao-Hua Zhu, Yun-Xu Luo, Wei-ji Liu
doaj +1 more source
Substantial bulk photovoltaic effect enhancement via nanolayering. [PDF]
, 2016 Spontaneous polarization and inversion symmetry breaking in ferroelectric materials lead to their use as photovoltaic devices. However, further advancement of their applications are hindered by the paucity of ways of reducing bandgaps and enhancing ...
Grinberg, Ilya +4 more
core +1 more source
Numerical Simulation Study on Characteristics of Tight Hard Sand Broken by Axe-shaped PDC Cutter
Shiyou jixie, 2021 The study on the specific rock breaking mechanism of axe-shaped PDC cutter in the existing literatures is relatively less, the rock breaking characteristic test data are mostly for field application data, and there is short of theoretical basis of tooth ...
Zhao Runqi +5 more
doaj
Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes
Advanced Functional Materials, EarlyView.Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng +8 more
wiley +1 more source
Forming peculiarities and manifestation of tectonic faults in soft rocks [PDF]
, 2012 Features of distribution of tectonic structures in soft rocks confirm the presence of horizontal tectonic forces in the formation of faults and are based on the manifestation of their morphological features.
Austgen, M. +7 more
core +1 more source