Synthetic dataset

The Amoco 2.5-D dataset juxtaposes the complex folding of the Carpathian mountains with the classic salt structures of the North Sea. A 2-D slice of the velocity model can be seen in Figure . This slice can be replicated along a third dimension to create the 2.5-D velocity model. Naturally, the second dimension is the dip direction and the third dimension is the strike direction.

The data for this synthetic model were created by finite difference modeling. It was done as a 3-D survey shot in the dip direction. Since this modeling was done over a 2.5-D velocity structure, it is a simple matter to manipulate the data to generate a strike line survey as well, although the inline and crossline geometries will be different from the dip line survey.

 

vel
Figure 1 Velocity model for the Carpathians over the North Sea.