Study on the resolution capability of borehole transient electromagnetic method [PDF]
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
doaj +5 more sources
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
doaj +7 more sources
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
doaj +7 more sources
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
doaj +4 more sources
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
doaj +4 more sources
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
doaj +4 more sources
Anomaly Field Extraction Based on Layered-Earth Model and Equivalent Eddy Current Inversion: A Case Study of Borehole zk506 in Baishiquan, Xinjiang [PDF]
SensorsBased on the concept of an equivalent eddy current, anomaly field inversion provides an efficient and rapid inversion method for borehole transient electromagnetic (BHTEM) measurements. It enables the utilization of the equivalent eddy current to rapidly
Yi Yang +7 more
doaj +2 more sources
A Combined Method of Seismic Monitoring and Transient Electromagnetic Detection for the Evaluation of Hydraulic Fracturing Effect in Coal Burst Prevention [PDF]
SensorsIn order to mitigate the risk of roof-dominated coal burst in underground coal mining, horizontal long borehole staged hydraulic fracturing technology has been prevailingly employed to facilitate the weakening treatment of the hard roof in advance.
Jiang Bian +8 more
doaj +2 more sources
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 +3 more sources
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
doaj +2 more sources