PGS completes 3D survey offshore Ivory Coast

PGS has completed a 900 km2 multi-azimuth broadband seismic survey of the prolific upper Cretaceous Plays in Block CI-706 offshore Ivory Coast. 

Recently completed final depth processing has improved illumination of the block, adding a second azimuth to existing GeoStreamer data. The latest north-south acquisition, which covers the majority of the block, was processed with the underlying east-west-acquired data. The combined azimuths benefit from the GeoStreamer broadband frequency bandwidth and a comprehensive depth imaging flow. 

The combination of two data azimuths has resulted in increased resolution of complex faulting in the syn-transform section, to enable a greater understanding of the distribution of Albian sandstone targets hosted in tilted fault blocks. The imaging of the prolific Upper Cretaceous play is also improved, with a clearer delineation of turbidite channel and fan complexes. Heightened imaging of the geomorphology of stratigraphic pinch-out traps can also reduce the risks associated with hydrocarbon migration and trap integrity. 

A further 7000 km2 of GeoStreamer broadband data will be available this month. 

Meanwhile, a recent expansion of PGS’ Gabon MegaSurvey coverage has significantly increased access to 3D seismic data over the 35 open blocks on offer. Gabon’s Direction Generale des Hydrocarbures (DGH) and PGS are now offering more than 65,000 km2 of 3D seismic and more than 21,000 km of 2D seismic data. 

An extension to the tender submission deadline for the Gabon 12th Offshore Licensing Round provides further opportunity to integrate new data into evaluations of open blocks, said PGS. 

In addition to the seismic data, well data is now available for 167 wells within the MegaSurvey area, to support the evaluation of the blocks on offer. Value-added composite logs used in conjunction with the regional seismic dataset will help with the assessment of prospectivity and play evaluation.