Exploration of anomaly separation technology of wide-field electromagnetic method

2021 ◽  
Author(s):  
Hong-Jun Tian ◽  
Zhi-Wen Gu ◽  
Guang-Da Zhang ◽  
Dong-Dong Zhao ◽  
Hao Zhou ◽  
...  
Keyword(s):  
Electromagnetic Method ◽  
Wide Field ◽  
Separation Technology

The Development of Near-source Electromagnetic Methods in China

2018 ◽  
Vol 23 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Guo-qiang Xue
Keyword(s):  
High Efficiency ◽  
Academic Research ◽  
Electromagnetic Method ◽  
Detection Accuracy ◽  
Wide Field ◽  
Transient Electromagnetic Method ◽  
Transient Electromagnetic ◽  
Detection Technology ◽  
Deep Depth ◽  
Central Loop

Near-source electromagnetic technology has been developed and applied in the exploration of petroleum, metallic ore, coal, and engineering geology due to its high efficiency, high detection accuracy, and deep depth of investigation. In this paper, research and applications of the frequency-domain electromagnetic sounding method (FDEM), wide-field electromagnetic method (WFEM), modified central-loop transient electromagnetic method (TEM), and short-offset grounded-wire TEM (SOTEM) with obvious near-source characteristics, were reviewed and analyzed. From the 1960s to 1990s, the FDEM method and equipment were extensively developed in China. These methods have played important roles in the exploration of coal resources. Based on controlled source audio-frequency magnetotelluric (CSAMT) and FDEM methods, a new method has been developed by deriving a new expression to calculate apparent resistivity. This method, which is referred to as WFEM, has been studied, applied, and received great attention in China. To increase work efficiency and reduce the influence of local transverse anisotropy on the detection processes, a modified central-loop TEM detection technology based on the central loop transient electromagnetic method was developed in China. The advantages of SOTEM in near-source surveys with high resolution and increased depth detection stimulated academic research interest to further develop grounded-wire TEM techniques. [Figure: see text]

A feasibility study of the wide-field electromagnetic method for hidden ore deposits prospecting

2020 ◽  
Vol 179 ◽  
pp. 104121
Author(s):  
Rong Liu ◽  
Jianxin Liu ◽  
Chunming Liu ◽  
Rongwen Guo ◽  
Hongyu Wang ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Ore Deposits ◽  
Electromagnetic Method ◽  
Wide Field

Application of a wide-field electromagnetic method to shale gas exploration in South China

2017 ◽  
Vol 14 (3) ◽  
pp. 441-448 ◽  
Author(s):  
Xue-Li Yang ◽  
Bo Li ◽  
Chuan-Sheng Peng ◽  
Yang Yang
Keyword(s):  
South China ◽  
Shale Gas ◽  
Electromagnetic Method ◽  
Wide Field

Application of wide-field electromagnetic method in shale gas survey in Eastern Kunlun, Qinghai province, China

2020 ◽  
Vol 27 (11) ◽  
pp. 3388-3397
Author(s):  
Zhong-hong Yu ◽  
Ling-qin Yan ◽  
Zhi-jie Cai ◽  
Jin-hai Wang ◽  
Yong-feng Xu ◽  
...  
Keyword(s):  
Shale Gas ◽  
Electromagnetic Method ◽  
Wide Field ◽  
Qinghai Province
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