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Research of Dynamic Azimuth Gamma Instrument while Drilling for Mine [PDF]
E3S Web of Conferences, 2020 In view of the problems that the existing gamma logging instruments in coal mines can only carry out static fixed-point measurement and are not suitable for rotary drilling, this paper, based on the analysis of the characteristics of measurement while ...
Long Chen, Gang Chen
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地质科技通报, 2021 Through the self-developed and designed no-dig Logging While Drilling(LWD) system, it can collect the parameters of no-dig drilling, identify the real-time formation lithology of no-dig drilling, and provide safety information guarantee for no-dig ...
Han Xu +8 more
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Mechanically oscillating sample under magnetic field gradients: MOS-NMR
Journal of Magnetic Resonance Open, 2022 Nuclear Magnetic Resonance (NMR) has been widely used in Petroleum Science and Engineering to study geological formations (porous media) in laboratories or under well-logging conditions.
Everton Lucas-Oliveira +6 more
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Geofluids, 2017 The underbalanced drilling (UBD) technology has been widely implemented due to its advantages in drilling efficiency improvement and cost reduction. However, this advanced technology requires very special equipment and operational mechanism, which raises
Hao Wu +6 more
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A lithology identification method while drilling based on KAN neural network
Meitan xuebaoLithology identification while drilling is an important geological guarantee means for transparent detection of coal mine geology. The traditional lithology identification method mainly relies on manual judgment, which relies on the accumulation of ...
Bo WANG +6 more
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Study on the azimuth sensitivity of azimuthal γ ray logging while drilling
He jishu, 2021 BackgroundThe response of azimuth gamma well logging in multiple sectors around the well cannot reflect the actual radioactive distribution of the formation.PurposeThis study aims to obtain the contribution factors of different sectors around the ...
YU Huawei +6 more
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Design of Excitation Circuit for Logging While Drilling Ultrasonic Array Logging Tool
Cejing jishuThrough the wellbore reflection characteristics obtained by ultrasonic array logging tool while drilling, the wellbore profile is studied in real time, and the fractured formation information is obtained.
WANG Yining +5 more
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Multi-Parameter Step-by-Step Inversion of Resistivity Anisotropy and Application
Cejing jishu, 2023 Electromagnetic resistivity logging while drilling is widely used, which has become a required item in the inclined and horizontal offshore wells. However, due to the comprehensive influence of reservoir anisotropy, drilling fluid invasion and other ...
HU Wenliang +4 more
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Drilling azimuth gamma embedded design
MATEC Web of Conferences, 2016 Embedded drilling azimuth gamma design, the use of radioactive measuring principle embedded gamma measurement while drilling a short section analysis. Monte Carlo method, in response to the density of horizontal well logging numerical simulation of 16 ...
Zhou Yi Ren +3 more
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Advanced Engineering Materials, EarlyView.The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi +3 more
wiley +1 more source