Abstract：Inverse Q-filter and time-frequency domain deconvolution can improve the resolution of attenuated traces.However,coefficient gain causes inverse Q-filter very instable,and how to accurately estimate Q value is another key issue.Time-frequency domain deconvolution can well adapt to instable seismic records.However,due to the phase distortion of seismic wavelets during the propagating process,time-frequency domain deconvolution can only remove the influence of wavelet amplitude spectra,but cannot accurately extract wavelet phase spectra,affecting the deconvolution result.We propose to optimize the basic conditions of deconvolution by correcting the phase of attenuated seismic records,and then we can achieve deconvolution in S domain through improved generalized S transform.Applications to model and actual seismic data have proved that phase-corrected S-domain deconvolution can get more accurate results,and it is an effective method to identify thin layers and describe stratigraphic pinch-out points.
周东红, 谭辉煌, 王伟. 相位校正S域反褶积方法及应用[J]. 石油地球物理勘探, 2020, 55(6): 1245-1252.
ZHOU Donghong, TAN Huihuang, WANG Wei. Deconvolution in S domain with phase correction and its application. Oil Geophysical Prospecting, 2020, 55(6): 1245-1252.
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