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- W2183659046 abstract "It has been observed that the amplitudes of seismic waves decay faster than predicted by geometrical spreading of the wave fronts. The attenuation of seismic waves due to inelastic nature of medium is described by quality factor, Q. The reliable estimates of Q are required to design an inverse Q filter which removes the absorption and dispersion effects from the recorded seismic data. This is useful for meaningful amplitude inversion and reservoir characterization. The classical log-log spectral ratio method may give biased Q estimation due to log transformation of data. A non-linear (Gauss-Newton) technique has been presented here to estimate seismic Q. The validity of the technique has been demonstrated by estimating Q from the reflection data. We found that the Q values estimated using Gauss-Newton method are lower than those of estimated using classical spectral ratio method. The estimated frequency independent Q values (21 – 32) indicate the presence of water saturated sand in the region (Jannsen et al, 1985). The method can be applied to more number of traces of same section to infer more information about the region." @default.
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- W2183659046 date "2011-01-01" @default.
- W2183659046 modified "2023-09-24" @default.
- W2183659046 title "Estimation of Seismic Q Using a Non-Linear (Gauss-Newton) Regression" @default.
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