TDI-Brooks International has completed an offshore ‘seep-hunting’ surface geochemical analysis and geotechnical campaign offshore West Africa for client TGS.
TDI-Brooks International has completed an offshore ‘seep-hunting’ surface geochemical analysis and geotechnical campaign offshore West Africa for client TGS.
The campaign stretched across the MSGBC Basin, from Northern Senegal through The Gambia and AGC zone, into Guinea-Bissau down to the Guinea transform fault.
TDI-Brooks’ R/V Gyre acquired 80,000 km2 of high resolution multibeam echo sounder bathymetry and performed the offshore advanced analysis where 80 active hydrocarbon seeps have been detected in the multibeam water column data to date. The R/V Proteus completed phase 2 performing the coring programme, which included 260 piston cores, 23 jumbo piston cores and 23 heat flow measurements. Advanced geochemical analysis of samples is continuing.
The R/V Gyre is currently performing a further geochemistry analysis programme offshore Nigeria. This is Nigeria’s first regional multi-client multibeam and seafloor sampling (MB&SS) study.
After just three days of field operation, two prominent water column anomalies and bubble plumes with associated surface slicks were observed in more than 2000 m water depth. The study will cover an area of approx. 80,000 km2 of the offshore Niger Delta and will incorporate around 150 cores from the seabed, which target multibeam backscatter anomalies.
The RV Gyre has now collected 65,000 km2 of multibeam data and identified 431 water column anomalies in the Nigeria study area.
