Seismic and Well Results Shedding Light on Offshore Atlantic Margin Turbidites

Summary This study evaluates turbiditic reservoirs along Morocco’s Atlantic margin using well results and 3D seismic data analysis. These reservoirs, ranging from Jurassic to Tertiary periods, display diverse depositional environments and characteristics. In the northern Gharb offshore, Mio-Pliocene reservoirs consist of turbiditic channels and sandy lobes deposited in a deep marine environment. Further south near Agadir, thin Albian turbidites in the Rak-1 well provide evidence of deep marine clastic input, supported by coastal and deltaic deposits from the Tan-Tan Formation during the Berriasian to Albian period. Jurassic channels reveal contrasting morphologies; Lower Jurassic erosional features versus Middle Jurassic asymmetrical levees shaped by contour currents. Further to the south, Valanginian-Albian turbidites in Fuerteventura outcrops and DSDP cores suggest sediment infill in salt-influenced mini-basins. In Boujdour-Dakhla offshore, the CB-1 well encountered 14m of gas-bearing Berriasian-Valanginian sandstones, while Albian-Turonian turbidites suggest additional potential. Seismic imaging techniques and attributes, including spectral decomposition, help in mapping turbidite features; however, more well and seismic data are required for a better understanding of the reservoir distribution.