Seismic inversion for acoustic impedance is widely used in the industry today mainly due to the ease and accuracy of interpretation of impedance data
Inversion of seismic data to acoustic impedance allows an integrated approach to geological interpretation. TGS offers inversion as the transformation of both
poststack and prestack seismic traces into impedance data.
The low-frequency trend of acoustic impedance is usually derived from
Several different techniques/methodologies are commonly used to perform acoustic impedance inversion.
TGS offers the following types of inversion processes:
Poststack: - band-limited
Prestack: - simultaneous
- joint inversion
This method gives an estimate of the reflectivity series that would approximate the seismic data with a minimum number (sparse) of spikes. Nonuniqueness is taken care of by applying the sparse reflectivity criterion. The maximum likelihood deconvolution and L1 norm algorithms are commonly used.
As the sparse spike inversion method tends to remove the embedded wavelet from the data, the inversion results are broadband for the higher frequencies, maximizing vertical resolution and minimizing the tuning effects.
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