Velocity Model Building for Pre-Stack Depth Migration - An Onshore Libya Case Study

Typically, velocity models for land datasets are built using a traditional “blocky” layer-based velocity model. Here we use a dataset from the Masrab field in the Sirte basin south-east of Tripoli, Libya, to compare this traditional way of building depth models with a “smooth”, volumetric velocity model building approach. We show that the volumetric approach provides improved image quality whilst decreasing the turnarund time.