Auxiliary Sensor-Based Borehole Transient Electromagnetic System for the Nondestructive Inspection of Multipipe Strings [PDF]
Sensors, 2017 Transient electromagnetic (TEM) techniques are widely used in the field of geophysical prospecting. In borehole detection, the nondestructive inspection (NDI) of a metal pipe can be performed efficiently using the properties of eddy currents.
Bo Dang +6 more
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A Uniform Linear Multi-Coil Array-Based Borehole Transient Electromagnetic System for Non-Destructive Evaluations of Downhole Casings [PDF]
Sensors, 2018 Borehole transient electromagnetic (TEM) techniques have been proven to be efficient for nondestructive evaluations (NDEs) of metal casings using eddy-current properties.
Bo Dang +6 more
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Frontiers in Earth ScienceThe borehole-ground transient electromagnetic method enhances the detection range and resolution by placing the transmitter electrode within the borehole, allowing for close-proximity excitation of subsurface targets and compensating for the shortcomings
Weihao Zhang +7 more
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Double-transmitting and Sextuple-receiving Borehole Transient Electromagnetic Method and Experimental Study [PDF]
Earth Sciences Research Journal, 2017 With the continuous improvement of precision requirements for borehole geophysical exploration, the application of transient electromagnetic method (from now on referred to as TEM) in a borehole has become a hot spot.
Bo Wang +3 more
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New method for denoising borehole transient electromagnetic data with discrete wavelet transform [PDF]
Journal of Applied Geophysics, 2019 Abstract Discrete wavelet transform (DWT) has been widely used as a useful tool in denoising geophysical data for its outstanding feature of detecting singularities and transients. In this paper, we develop a new strategy of denoising borehole transient electromagnetic (BHTEM) data.
Li Zhen Cheng +2 more
exaly +5 more sources
Research on borehole transient electromagnetic positioning method of azimuthal coil scanning detection [PDF]
Meitan xuebaoThe borehole transient electromagnetic method is used to detect the long-range water-bearing bodies around the borehole wall by using the advanced water exploration borehole in the heading roadway, which avoids the “one’s opinion in one hole” because the
Jiulong CHENG +3 more
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Physical simulation on directional shielding of receiving coil in borehole transient electromagnetic method [PDF]
Meitan xuebaoBorehole transient electromagnetic(BTEM)scanning detection method uses the advanced exploration boreholes in the roadway to scan and detect the hidden geological anomalies outside the borehole wall by rotating the transceiver coil inside the borehole ...
Chengtao XIN +3 more
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Study on the resolution capability of borehole transient electromagnetic method
Scientific ReportsWater hazards present a significant challenge in the construction of coal mine tunnels. The borehole transient electromagnetic method (BTEM) is a detection technique that positions both the transmitter and receiver coils within a borehole, effectively ...
Tao Fan +9 more
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IEEE Access, 2020 Borehole transient electromagnetic (TEM) array has proven to be efficient for the downhole nondestructive testing (NDT) of metal casings through the eddy-current property.
Changzan Liu +8 more
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Calculation of borehole transient electromagnetic apparent resistivity and dip in anisotropic medium
河南理工大学学报. 自然科学版In the fields of resource exploration and development， as well as geological disaster prevention and control， the electromagnetic method of borehole is an effective tool for monitoring subsurface fluid distribution， particularly in evaluating the ...
ZHAO Ning +4 more
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