OSLO, Norway – Colombia’s National Hydrocarbon Agency has sent PGS a Surface Prospection Clearance related to a study of the country’s Pacific offshore area.
This authorizes PGS to reprocess 2D lines from different vintages, applying modern imaging techniques and incorporate these lines into a MegaProject covering the Pacific Offshore, in partnership with Servicio Geologico Colombiano.
The reprocessed regional Tumaco basin dataset will support exploration in the Pacific offshore area, improving imaging of the play elements and de-risking prospectivity, TGS said.
It will cover most of the Tumaco offshore region, including the San Juan Basin. The area presents a forearc basin structural style in convergent margins, related to subduction of the Nazca Plate beneath the western part of South America.
Along the South Colombia Pacific margin, thick Cenozoic sedimentary sequences accumulated over blocks of transitional and oceanic crust basement that developed between the Late Cretaceous and Early Cenozoic. The sedimentary fill is mainly of Tertiary age.
According to PGS, the potential petroleum system is connected late Cretaceous/early Tertiary source rocks, which migrated to turbidites fan systems associated with the Miocene interval.
Middle-Upper Miocene shales combined with early-middle Miocene mud offer hydrocarbon-bearing trap and seal potential.