TGS has started work on an enhancement of its Fusion 3D seismic dataset offshore Sierra Leone, with a focus on the undrilled Vega prospect.
The team will employ modern seismic imaging to enhance depth data, targeting clearer subsurface insights for E&P companies seeking to explore the area. Interest in the region is growing, TGS said, following recent discoveries offshore South America.
Sierra Leone, TGS added, could potentially emerge as one of Africa’s leading exploration frontiers, supported by the availability of acreage and good fiscal terms. TGS is working with the Petroleum Directorate of Sierra Leone on the initiative.
Eight wells have been drilled on the country’s continental slope region, investigating submarine fan systems thought to hold reservoir quality at multiple stratigraphic levels. There are unexplored opportunities in various basin-floor fans in the northern Sierra Leone Basin, TGS added, where transpressional events created a syn-rift plateau.
The project will reprocess about 7,500 sq km of 3D seismic data and 16,000 line km of 2D pre-stack depth migrated (PSDM) data, supported by gravity, magnetic and interpretive data products. Final results should be available next summer.
