The distortion correction of magnetotelluric sounding curves is critical to magnetotelluric exploration. Based on the comparison between the resistivity logging curves of basin D and the basin's inversed sounding curves before and after being corrected through magnetotelluric sounding translation, this study constructed a transformation function and calibrated magnetotelluric sounding curves using logging curves. The magnetotelluric inversion results improved using the calibration technology proposed in this study are highly consistent with the verification boreholes. Finally, this study effectively revealed the structural characteristics of basin D by combining drilling, seismic, gravitational, and magnetic data.
Sun J, Jin G W, Bai D H, et al. The noise interference of magnetotelluric sounding data[J]. Geophysical and Geochemical Exploration, 2000, 24(2): 119-127.
[2]
陈乐寿, 王光锷. 大地电磁测深法[M]. 北京: 地震出版社, 1987.
[2]
Chen L S, Wang G E. Magnetotelluric sounding[M]. Beijing: Seismological Press, 1987.
[3]
王家映. 关于大地电磁的静校正问题[J]. 地质科技情报, 1992, 11(1):69-76.
[3]
Wang J Y. Problem about static correction in magnetotellurics[J]. Geological Science and Technology Information, 1992, 11(1): 69-76.
Su F, Tang J T, He J S, et al. Analysis of false anomaly of apparent resistivity in electromagnetic sounding[J]. Chinese Journal of Nonferrous Metals, 1995, 5(4): 14-16.
Wang Y T, Bai G X. The distortion of magnetotelluric sounding curves and its correction[J]. Geophysical Prospecting for Petroleum, 1997, 36(1): 95-106.
Zhang X, Hu W B, Yan L J, et al. Application of wavelet transform in magnetotelluric sounding static correction[J]. Journal of Jianghan Petroleum Institute, 2002, 24(2): 40-41.
Yao Z L, Wang Q Y, Hu Y P, et al. Technical problems of MT static-shift using TEM sounding correction[J]. Seismology and Geology, 2001, 23(2): 257-263.
Chen Q L, Hu W B, Li J M, et al. The application of surface resistivity to the correction of magnetotelluric static migration[J]. Geophysical and Geochemical Exploration, 1999, 23(4): 50-56.
Lyu Q Y, Zhang X B, Qiu G G, et al. An experimental study of the correction of the statistical averaging method of frequency points in the first branch of magnetotelluric sounding in the static displacement zone[J]. Geophysical and Geochemical Exploration, 2020, 44(3):677-684.
Li G R, Xi Z Z, Long X. Static displacement correction for frequency domain electromagnetic method based on second electrostatic field[J]. Geophysical and Geochemical Exploration, 2017, 41(4): 730-735.
Li A Y, Tang D C, Yang S. Static modification method to directly eliminate the static effect of electric field component[J]. Oil Geophysical Prospecting, 2004, 39(S1): 96-98,169.
Gao H W, Zhang S Y. Study of correction for static shift: The decomposition of magnetotelluric impedance tensors[J]. Geological Science and Technology Information, 1998, 17(1): 92-97.
Liu J C. Study on de static method of time domain topological processing of magnetotelluric sounding[D]. Beijing: China University of Geosciences(Beijing), 2011.
Liu G M, Ma W, Liu J C, et al. Spatial domain topological processing technique for studying static effect in magnetotelluric sounding[J]. Geophysical and Geochemical Exploration, 2018, 42(1): 118-126.
Hua X R, Xi Z Z, Hu S G, et al. Noise suppression of high frequency magnetotelluric method[J]. Geophysical and Geochemical Exploration, 2017, 41(2): 328-332.
Wang D Y, Zhu W, Fan C S, et al. Noise processing methods and application study of MT in the ore concentration area[J]. Geophysical and Geochemical Exploration, 2015, 39(4): 823-829.
[21]
郭振宇. 大地电磁测深时间域标定、阻抗估计及去噪技术研究[D]. 长春: 吉林大学, 2020.
[21]
Guo Z Y. Research on time domain calibration, impedance estimation and denoising technology of magnetotelluric sounding[D]. Changchun: Jilin University, 2020.
Luo W, Wang X B, Wang K P, et al. Study on the characteristics of magnetotelluric source effects and its correction[J]. Chinese Journal of Geophysics, 2021, 64(8): 2952-2964.
Peng Y, Zhang X B, Zhang J, et al. The application of magnetotelluric sounding method to oil-gas geological survey and evaluation of the western slope area of Binbei[J]. Geophysical and Geochemical Exploration, 2020, 44(3): 656-664.
Xu Y P, Xiao L Y, Sun C Z, et al. Seismic data processing technology and application in the near surface volcanic rock coverage area of Dayangshu Basin[J]. Natural Gas Industry, 2007, 27(S1): 147-149.
Zhang X D, Wang Z J, Xu Q X. Analysis of three-dimensional CEMP electrical exploration effect in volcanic covered Basins: Taking Dayangshu basin as an example[C]// Proceedings of 2019 academic annual meeting on oil and gas geophysics. 2019:154-161.
[26]
吴河勇. 大杨树盆地成藏条件及含油气系统研究[D]. 北京: 中国地质大学(北京), 2003.
[26]
Wu H Y. Research of pool-forming condition and pe-troleum system in Dayangshu Basin[D]. Beijing: China University of Geosciences, 2003.
[27]
金成志. 大杨树盆地含油气远景综合评价[D]. 北京: 中国地质大学(北京), 2007.
[27]
Jin C Z. Comprehensive evaluation of the oil and gas exploration prospect in Dayangshu Basin[D]. Beijing: China University of Geosciences(Beijing). 2007.
Feng D S, Wang X. Magnetotelluric finite element method forward based on biquadratic interpolation and least squares regularization joint inversion[J]. The Chinese Journal of Nonferrous Metals, 2013, 23(9): 2524-2531.
Qiu G G, Zhang X B, Pei F G, et al. Effectiveness of magnetotelluric sounding inversion technique[J]. Geophysical and Geochemical Exploration, 2015, 39(1): 118-124.