The influence of seismic wavelet phase on reflection coefficient inversion results
Zhang, Y., Dai, Y., Ding, J., Zhang, M. and Wang, R., 2014. The influence of seismic wavelet phase on reflection coefficient inversion results. Journal of Seismic Exploration, 23: 131-152. To research the influence of seismic wavelet phase on reflection coefficient inversion, an Autoregressive Moving Average (ARMA) model was used to describe the seismic wavelet, the wavelets with the same amplitude spectrum and different phase spectra were constructed by symmetrical mapping Pole-Zeros of the ARMA model in the z-domain, and spectrum division was used to implement reflection coefficient inversion. The theoretical analysis shows that a phase-only filter was remained after reflection coefficient inversion in the condition of inaccurate seismic wavelet phase estimation, and the phase spectrum of the phase-only filter was the phase spectrum difference between real wavelet and constructed wavelet. The real or accurate reflection coefficient sequences were identified in inversion results by the evaluation methods of Kurtosis and Variation. Simulation and actual seismic data processing results also verified the law of the wavelet phase influence on reflection coefficient inversion and the effectiveness of the evaluation methods. Research interest for enhancing the precision of reflection coefficient inversion results was indicated.
- Cui, Q.H., Rui, Y.J. and Shang, X.M., 2011. Mixed-phase seismic wavelet extraction and its
- application. Geophys. Prosp. for Petrol., 50: 481-486.
- Dai, Y.S., Wang, J.L. and Wang, W.W., 2008. Seismic wavelet extraction via cumulant-based
- ARMA model approach with linear and nonlinear combination. Chin. J. Geophys. (in
- Chinese), 51: 1851-1859.
- Levy, S. and Oldenburg, D.W., 1982. The deconvolution of phase-shifted wavelets. Geophysics,
- 47: 1285-1294. :
- Levy, S. and Oldenburg, D.W., 1987. Automatic phase correction of common-midpoint stacked
- data. Geophysics, 52: 51-59.
- Liang, G.H., 1998. On the methods of seismic wavelet extraction. Geophys. Prosp. for Petrol. (in
- Chinese), 37: 31-39.
- Robinson, E.A., 1967. Predictive decomposition of time series with application to seismic
- exploration. Geophysics, 32: 418-484.
- Sacchi, M.D., 1997. Re-weighting strategies in seismic deconvolution. Geophys. J. Internat., 12:
- 651-656.
- Tang, B. and Yin, C., 2001. Non-minimum phase seismic wavelet reconstruction based on higher
- order statistics. Chin. J. Geophys. (in Chinese), 44: 404-410.
- Wang, Y.H., 2003. A stable and efficient approach of inverse Q filtering. Geophysics, 67: 657-663.
- Wang, Y.H., 2006. Inverse Q filter for seismic resolution enhancement. Geophysics, 71: 51-60.
- Wiggins, R., 1978. Minimum entropy deconvolution. Geoexplor., 16: 21-35.
- Wiggins, R., 1983. Entropy guided deconvolution. Geophysics, 50: 2720-2726.
- Wu, Z.Y., 2004. Digital signal processing. Higher Education Press, Beijing.
- Yi, Z.L. and Wang, R.Q., 2006. A new mixed phase deconvolution method. Oil Geophys. Prosp.,
- 41: 266-270.
- Yuan, S.Y. and Wang, S.X., 2010. Noise attenuation without spatial assumptions about seismic
- coherent events. Expanded Abstr, 80th Ann. Internat. SEG Mtg., Denver: 3524-3528.
- Yuan, S.Y. and Wang, S.X., 2011. Influence of inaccurate wavelet phase estimation on seismic
- inversion. Appl. Geophys., 8: 48-59.
- 152 ZHANG, DAI, DING, ZHANG & WANG
- Zhang, G.Z., Liu, H. and Yin, X.Y., 2005. Method for fine picking up seismic wavelet at up-hole
- trace. Oil Geophys. Prosp., 40: 158-162.
- Zhang, K., Li, Y.D. and Liu, G.Z., 1999. Multiresolution seismic signal deconvolution. Chin. J.
- Geophys. (in Chinese), 42: 529-535.
- Zhang, R. and Castagna, J., 2011. Seismic sparse-layer reflectivity inversion using basis pursuit
- decomposition. Geophysics, 76: 147-158.
