Directional drilling technology with mud pulse wireless MWD in underground coal mine
Meikuang Anquan, 2021 The directional drilling technology with mud pulse wireless MWD in coal mine was presented. We introduce the principle of the technology and analyze three key technologies: the wireless MWD with mud pulse, the compound directional drilling and the ...
LI Quanxin, CHU Zhiwei, XU Chao, FANG Jun
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Study of Downhole Lateral Force Measurement Modelling and Devices in Petroleum Exploration
Energies, 2022 Measurement while drilling (MWD) technology is important for obtaining downhole parameters. As an essential parameter in drilling engineering, lateral force provides a powerful reference basis for judging the downhole drilling direction.
Kui Deng +5 more
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Review on the Influence of Complex Stratum on the Drilling Trajectory of the Drilling Robot
Applied Sciences, 2023 A complex stratum formed due to the influence of internal and external dynamic geological processes will lead to extremely complex mining conditions in deep exploration and development of oil, gas, coal and other resources, processes mainly threatened by
Mingxia Kang, Dezheng Hua, Xiaoqiang Guo
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Off-line measurement while drilling system for mine-used slewing drilling rig
Gong-kuang zidonghua, 2019 For inability to directly measure attitude data of drilling tool at hole bottom and draw drilling hole trajectory during drilling process of mine-used slewing drilling rig, an off-line measurement while drilling system for mine-used slewing drilling rig ...
ZHANG Wenjie +2 more
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Mine-used mud pulse wireless measurement while drilling device and its applicatio
Gong-kuang zidonghua, 2019 For problems of wired while drilling device (MWD) which used central cable drilling rig as signal transmission channel such as complex drilling rig structure, limited mechanical behavior, poor anti-interference performance and so on, a mine-used mud ...
FANG Jun +3 more
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Residual stress measurement round robin on an electron beam welded joint between austenitic stainless steel 316L(N) and ferritic steel P91 [PDF]
, 2017 This paper is a research output of DMW-Creep project which is part of a national UK programme through the RCUK Energy programme and India's Department of Atomic Energy.
A.K. Bhaduri +57 more
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High Precision Measurement Technology of Upward Drilling Depth in Coal Mine
Meikuang Anquan, 2020 In view of the problem that the existing measurement technology while drilling cannot solve the borehole depth measurement well, a high precision calculation method is proposed for the measurement depth while drilling of rotary drilling rig. This method
ZHANG Jun, WANG Xinwen
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Model parameters of resistivity measurement while drilling in coal mine
Meikuang Anquan, 2021 In order to obtain the most suitable engineering parameters for the resistivity measurement while drilling in coal mine, and achieve the accurate measurement, the measurement model of the symmetric four-stage device commonly used in the resistivity ...
MA Bin
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A Designed Calibration Approach for the Measurement-While-Drilling Instrument
Applied Sciences, 2022 The Measurement-While-Drilling (MWD) system, composed of a tri-axial magnetometer and a tri-axial accelerometer, is widely used in the Horizontal Directional Drilling machine in coal mines.
Zongwei Liu +4 more
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Defect Analysis and Detection of Cutting Regions in CFRP Machining Using AWJM [PDF]
, 2019 The use of composite materials with a polymeric matrix, concretely carbon fiber reinforced polymer, is undergoing further development owing to the maturity reached by the forming processes and their excellent relationship in terms of specific ...
Batista Ponce, Moisés +3 more
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