Technical Library

Deghosting a hydrophone-only measurement requires accurate description of seismic wavefield scattering at the sea surface. In recent years, attempts have been made to deghost hydrophone-only data...

The PGS model uncertainty analysis tool helps mitigate the risk associated with target positioning and volumetrics. The workflow quantifies the uncertainty inherent in a final velocity model and the...

Full Waveform Inversion (FWI) is a methodology that seeks to find a high-resolution, high fidelity velocity model of the subsurface capable of matching individual synthetic seismic waveforms with an...

Complete Wavefield Imaging (CWI) is a processing flow developed by PGS which integrates advanced technology for high-resolution velocity model building and depth imaging using reflections,...

This paper develops a fast and efficient large-scale anisotropic inversion technique for towed streamer electromagnetic (EM) data, which incorporates seismic constraints. The inversion algorithm is...

A case study was carried out over the Oseberg East Field where 2015 acquired multi-component broadband seismic data is being used to demonstrate potential improvement of structural interpretation. In...

Barnacles have been hampering the seismic industry since the start of the offshore seismic era. They attach to the streamer and impact signal to noise. Particularly in the areas close to the equator,...

In the shallow water environment found in parts of the Barents Sea, conventional imaging struggles to provide good imaging of the near surface. This is due to the lack of near offsets (angles) in...

In this case study from the Barents Sea, we have used refraction based Full Waveform Inversion (FWI) in an extreme anisotropy regime without the support from well information. We reveal our...

We propose a new acquisition design based on blended crossline sources. In contrast to existing blended-acquisition designs that only blend in 2D (inline direction and time), this design blends...