What is the purpose of wavelet extraction from the seismic trace?

1. What is wavelet extraction?
2. What is a seismic wavelet?
3. Which wavelet phase is most recommended for seismic interpretation?
4. What is a zero phase wavelet?

What is wavelet extraction?

1. n. [Geophysics] A step in seismic processing to determine the shape of the wavelet, also known as the embedded wavelet, that would be produced by a wave train impinging upon an interface with a positive reflection coefficient.

What is a seismic wavelet?

The seismic wavelet is the link between seismic data (traces), interpretations and the geology (reflection coefficients). It must be accurately known (estimated or measured) and quantified in all stages of the seismic cycle (from modelling, acquisition, processing, interpretation, inversion and reservoir work).

Which wavelet phase is most recommended for seismic interpretation?

Over the years, seismic interpreters have decided that the most pleasing wavelet is one having a zero-phase-lag characteristic — namely, the familiar zero-phase wavelet.

What is a zero phase wavelet?

A zero phase wavelet is symmetrical with a maximum at time zero. Zero phase wavelets have energy before time zero, which makes them noncausal, and therefore they are not physically realizable.