Enhancement of Margrave deconvolution of seismic signals in highly attenuating media using the modified S-transform
Document Type
Presentation
Publication Date
10-2016
Department
Department of Geological and Mining Engineering and Sciences
Abstract
We evaluate the performance of the Margrave deconvolution using three approaches of the Gabor, S-, and modified S transforms in a high attenuating media where the quality factor changes with depth dramatically. Our results substantiate that the modified S-transform deconvolution is more robust in terms of generating fewer artifacts and providing better estimates of reflectivities over the Gabor and S transforms. This improvement in the estimates of reflectivities in the modified S-transform is due to the enhancement of the time-frequency decomposition obtained by launching the frequency in the Gaussian window on a linear function. The coefficients of this linear function control the time-frequency localization by expanding the Gaussian window in low frequencies and tightening it in high frequencies. Thus, the modified S-transform provides a better time-frequency decomposition over the Gabor and S transforms. We show the efficiency of the modified S-transform deconvolution by synthetic and field data examples.
Publication Title
SEG Technical Program Expanded Abstracts 2016
Recommended Citation
Djeffal, A.,
Pennington, W.,
&
Askari, R.
(2016).
Enhancement of Margrave deconvolution of seismic signals in highly attenuating media using the modified S-transform.
SEG Technical Program Expanded Abstracts 2016, 5654.
http://doi.org/10.1190/segam2016-13971963.1
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/1599