As an example of inversion applied to real data, let's consider a 3-D case study that was done in the Taber area of southern Alberta, Canada, by Western Geophysical. [[:file:seismic-inversion_fig4.png|Figure 4]] shows a schematic interpretation of the geology of a river channel zone. The area of interest is the Glauconitic Formation of the lower Cretaceous upper Mannville Group, which is characterized by rapidly changing lithological facies. The reservoirs are sandstones with porosities of 15% surrounded by impermeable siltstone. | As an example of inversion applied to real data, let's consider a 3-D case study that was done in the Taber area of southern Alberta, Canada, by Western Geophysical. [[:file:seismic-inversion_fig4.png|Figure 4]] shows a schematic interpretation of the geology of a river channel zone. The area of interest is the Glauconitic Formation of the lower Cretaceous upper Mannville Group, which is characterized by rapidly changing lithological facies. The reservoirs are sandstones with porosities of 15% surrounded by impermeable siltstone. |