Changes

==AVO inversion==

==AVO inversion==

[[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.

[[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 [http://en.wikipedia.org/wiki/Poisson%27s_ratio 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 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

* The [[lithology]], [[porosity]], and [[fluid content]] of a given layer

* The [[lithology]], [[porosity]], and fluid content of a given layer

==See also==

==See also==