Model Building Services
The quality of the final depth migrated volume is only as good as the velocity / anisotropic model constructed during the model building phase. We devote the majority of the depth imaging process to building an accurate anisotropic model. Our workflow is based on repeated iterations of full volume prestack depth migration where at each iteration the model is updated using the results from the prior depth migrated volume. Every model building iteration is performed using full volume prestack depth migrated data.
GoCad/Skua technology is used for structural modeling. Using GoCad/Skua the detailed interpretations of major layer boundaries is used to construct model surfaces and combine surfaces to form geological bodies. Topology is then added to assign velocity and anisotropic fields functions to the different compartments of the model.
Velocity analysis is done using two tools: reflection tomography and prestack depth migration scans. Both are used to construct full anisotropic models. Combination of the two methods enables us to develop accurate velocity models which are used in prestack depth migration.
Our model building tools are suitable for construction of Gulf of Mexico (GOM) type models with smooth sedimentary velocity functions and detailed salt bodies, as well as layer based models needed for imaging of overthrust and faulted geology.