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Wavelet Extraction
Why should I do Well-Based Wavelet Extractions?
Because every use of seismic data is difficult or impossible without a wavelet to allow us to tie to wells. These uses include:
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(you must know which leg to map) (you must know what character changes mean) (see the "Inversion method" of pressure prediction) (you can be sure a well is faulty) (you can know what is wrong) (your amplitudes depend on the wavelet) (your amplitudes depend on the wavelet) |
Why should my Wavelet Extraction be Well-Based?
In the geophysical processing industry, "wavelet extraction" refers to the process of extracting a wavelet from seismic data statistically. This yields an amplitude spectrum that is approximately correct, but does not yield any estimate of the phase spectrum. It is useful in seismic processing, but should not be confused with the well-based wavelet extraction technique, which is useful in seismic modeling, inversion, AVO, and other interpretive techniques.
| Precision of Wavelet Extraction Methods | ||
| Well-Based | Statistical | |
| Amplitude Spectrum | Exact | Approximate |
| Phase Spectrum | Exact | None |
| Spatial Consistency | Measured | Assumed |
