Citation:
Du, Q. Z., Wang, W. Y., Sun, W. H., and Fu, L.-Y. (2022). Seismic attenuation compensation with spectral-shaping regularization. Earth Planet. Phys., 6(3), 259–274. http://doi.org/10.26464/epp2022024
2022, 6(3): 259-274. doi: 10.26464/epp2022024
Seismic attenuation compensation with spectral-shaping regularization
| 1. | Shandong Provincial Key Laboratory of Deep Oil & Gas, China University of Petroleum (East China), Qingdao 266580, China |
| 2. | Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China |
| 3. | Key Laboratory of Geophysical Prospecting, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266580, China |
| 4. | Department of Physics, University of Alberta, Edmonton, AB, T6G 2EI, Canada |
Because of the viscoelasticity of the subsurface medium, seismic waves will inherently attenuate during propagation, which lowers the resolution of the acquired seismic records. Inverse-Q filtering, as a typical approach to compensating for seismic attenuation, can efficiently recover high-resolution seismic data from attenuation. Whereas most efforts are focused on compensating for high-frequency energy and improving the stability of amplitude compensation by inverse-Q filtering, low-frequency leakage may occur as the high-frequency component is boosted. In this article, we propose a compensation scheme that promotes the preservation of low-frequency energy in the seismic data. We constructed an adaptive shaping operator based on spectral-shaping regularization by tailoring the frequency spectra of the seismic data. We then performed inverse-Q filtering in an inversion scheme. This data-driven shaping operator can regularize and balance the spectral-energy distribution for the compensated records and can maintain the low-frequency ratio by constraining the overcompensation for high-frequency energy. Synthetic tests and applications on prestack common-reflection-point gathers indicated that the proposed method can preserve the relative energy of low-frequency components while fulfilling stable high-frequency compensation.
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