10 December 2018

Two of the key challenges for velocity model building in the North Sea are a heterogeneous overburden (for example, the presence of fluvial and sub-glacial channels) and the presence of strong velocity contrasts (most often introduced by a chalk layer). Two model building techniques have been developed in recent years which address these challenges. Full-waveform inversion (FWI) has been shown to be highly effective in resolving overburden heterogeneity and multi-layer tomography allows us to preserve sharp contrasts in our velocity models. In this EAGE E-Lecture, we present how the combination of these two techniques provides an effective and efficient model building workflow for the North Sea environment.

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