Changes

==AVO inversion==

==AVO inversion==

Amplitude versus offset anomalies at sites in the vicinity of previous detailed modeling can be inverted to obtain acoustic parameter information. Using the layered model from the previous step as the starting point for the inversion process, the final compressional velocity, density, and Poisson's ratio information can be found. This is then used to predict the probable geological circumstances at the inversion site.

[[Amplitude]] versus [[offset]] anomalies at sites in the vicinity of previous detailed modeling can be [[Seismic inversion|inverted]] to obtain acoustic parameter information. Using the layered model from the previous step as the starting point for the inversion process, the final [[compressional velocity]], [[density]], and [[Poisson's ratio]] information can be found. This is then used to predict the probable geological circumstances at the inversion site.

A successful inversion of an AVO response provides the following:

A successful inversion of an AVO response provides the following:

* The origin of the anomaly, such as acoustic response, rigidity contrast, or AVO interference

* The origin of the anomaly, such as [[acoustic response]], [[rigidity contrast]], or AVO interference

* The thickness of the pay zone

* The thickness of the pay zone

* The value of Poisson's ratios near the anomaly

* The value of Poisson's ratios near the anomaly