Abstract:The earth resistivity observation data of Longnan Hanwang deep well are obviously interfered by the surface and have poor seismic reflection ability. In order to suppress the interference, improve the quality of observation data, and reflect the efficiency of deep wells, we make full use of the spatial distribution of electrodes in the original well holes to optimize the observation electrode distribution, abandon the use of ground electrodes, apply intermediate electrodes instead, and build a new observation device system. The results show that the signal-to-noise ratio of observation data of the optimized device is significantly improved, the amplitude of seasonal change becomes smaller, and the discrete current generated by natural environment interference and human activities is suppressed, making the data change identification more intuitive.
LI Wuquan,GAO Shude,YANG Yixuan et al. Experimental Analysis of Different Observation Methods in Hanwang Earth Resistivity Well in Longnan[J]. jgg, 2022, 42(4): 436-440.