Results 21 to 30 of about 141,733 (202)
Energies, 2022 The oil and gas resources stored in deep strata are an important replacement field of the petroleum industry. Accelerating the exploration and development of deep oil and gas is of great significance to the security of energy strategy.
Yongwang Liu +3 more
doaj +1 more source
Cutting-fluid flow with chip evacuation during deep-hole drilling with twist drills
, 2021 In this study the important aspects of cutting fluid distribution and the chip evacuation during micro twist deep-hole drilling are investigated using 3D multi-physics simulation methods.
A. Baumann +4 more
semanticscholar +1 more source
Effect of ultrasonic vibration on the performance of deep hole drilling process
Procedia Manufacturing, 2021 Deep hole drilling process is extensively used in demanding applications, namely plastic injection moulding, oil and gas industry and automobile engines.
J. Rajaguru, N. Arunachalam
semanticscholar +1 more source
Hole Depth Prediction in a Femtosecond Laser Drilling Process Using Deep Learning
Micromachines, 2023 In high-aspect ratio laser drilling, many laser and optical parameters can be controlled, including the high-laser beam fluence and number of drilling process cycles.
Dong-Wook Lim +5 more
doaj +1 more source
Research and practice of high speed spiral compound drilling technology in complex weak coal seam
Meikuang Anquan, 2022 In view of the difficult problems of drilling and discharging slag and low hole forming rate in complex weak coal seam of Wangpo Coal Mine, the high speed spiral compound drilling technology is studied, and the performance characteristics of ZDY6000LR ...
LI Yingxi
doaj +1 more source
Structural Optimization and Cutting Simulation Analysis of BAT Deep-hole Drilling
Journal of Harbin University of Science and Technology, 2018 BAT deep-hole drill is a typical inner-chip removal drill. Structures and angles of tools are the main factors that influence the machining quality and machining efficiency. Because the processing of deep-hole drilling is not visible，it is very difficult
WU Xue-feng +3 more
doaj +1 more source
Meikuang Anquan, 2023 The geological structure of the deep coal seam in Qinshui Basin is relatively complex, which poses a new challenge to the control of the directional landing site of the horizontal well and the control of the drilling trajectory of the horizontal section,
WANG Yuhong, SUN Tianyu, LI Peng
doaj +1 more source
Simulation Study on Single-Lip Deep Hole Drilling Using Design of Experiments
, 2021 Single-lip deep hole drilling (SLD) is characterized by a high surface quality and compressive residual stress in the subsurface of the drill hole.
Daniel Fandiño +4 more
semanticscholar +1 more source
Core drilling at Syowa Station, Antarctica
Antarctic Record, 1983 The first core drilling at Syowa Station in Antarctica was carried out by the 21st Japanese Antarctic Research Expedition (JARE-21) by a rotary core drilling method using air as the drilling fluid.
Katsutada Kaminuma
doaj +1 more source
The Effects of Guide Pads on Bore Diameter Enlargement Magnitude in Deep Hole Drilling
MATEC Web of Conferences, 2016 Deep hole machining accuracy plays a crucial role in product’s quality. The results of an investigation into the machining accuracy of deep drilling holes which highlights problems of bore diameter enlargement magnitude assessment are presented in this ...
Zhang Huang +4 more
doaj +1 more source