oa Generating a 3D Velocity Model - the GOCAD Approach

Both of the Overthrust and the Salt Dome (SEG/EAEG) models have been built synthetically from a set of cross sections, into a set of surfaces, then converted into 3D velocity grids. In both cases, the GOCAD software has been intensively used for these operations, and the goal of this presentation is to focuse mainly on the grid generation step, more specifically taking the example of the Overthrust model. It must be said that the methods that will be discussed here are very general, and has also been with success to the salt dome model.