Since 2019, and in collaboration with Perupetro, CGG GeoSpec have been undertaking new regional 2D seismic reprocessing from field tapes (2D TerraCubePSTM and 2D TerraCubePSDM) to complement a comprehensive, enhanced, workstation ready dataset of 3D seismic, 2D seismic and well data products. With this new and improved dataset, companies will be able to unlock the hydrocarbon potential of the Peruvian offshore by leveraging the best image quality from the reprocessing and the enhanced legacy datasets.

• 2D TerraCubePSTM and 2D TerraCubePSDM comprise over 15,000 km of 2D PSTM and PSDM reprocessing from field tapes covering the whole Peruvian margin. The latest source and receiver deghosting and demultiple techniques developed by CGG’s Seismic Imaging Group dramatically improve imaging of the Mesozoic.

• 3D TerraCubeREGRID with an input of 21,000km2 (39 individual 3D surveys some of them overlapping) covers a total of 18,500 km2 of seismic data that have been enhanced, amplitude and phase matched, zero phased and merged. In addition, structurally orientated noise attenuation filters have been applied to the 3D seismic data compilation to create the 3D TerraCubeXTRA volume which has a significantly improved signal to noise ratio.

• 2D enhanced seismic data from 27 2D seismic surveys totalling 64,920 km of data complements the 3D enhanced dataset. The enhanced 2D data is navigation corrected, with projection and coordinates sourced, corrected and checked, trace headers and SP/CDP corrected and repopulated, and is polarity and phase matched with improved signal to noise ratio.

• TerraCubeWSM comprises 30 newly-analysed wells alongside key re-mastered well data from both the mature northern half of Peru and the less explored southern part. In addition, the biostratigraphic review of some of the wells in the southern Trujillo and Salaverry Basins has identified Oligocene sediments for the first time.

These combined, enhanced datasets provide the best image the subsurface and allow companies to have a better understanding of the evolution of the margin by having a more robust determination of sedimentary package age and tectonic evolution.