TGS has launched a large-scale multi-client 3D seismic project, the Mauritania MegaSurvey, covering over 100,000 square kilometres. This modern data is designed to support exploration across offshore Mauritania and the broader West African Atlantic margin by integrating with TGS's existing seismic library in the region.

Exploration Context in Mauritania

Mauritania currently has no producing oil or gas fields. Past developments, such as the Chinguetti field, have been shut down, and plans for the Walata discovery have failed. However, development of the offshore Banda gas discovery is progressing, targeting a 2028 start-up, while the status of the larger BirAllah discovery remains unclear. Recent exploration, including an unsuccessful well by Shell in 2023, highlights the ongoing activity and need for improved subsurface data.

Purpose and Benefits of the MegaSurvey

The survey aims to create one seamless seismic volume across Mauritania's offshore, from nearshore to ultra-deepwater areas. This allows for a regional interpretation of the full "source to sink" system. The dataset provides regional-scale seismic continuity across multiple exploration plays, which supports robust basin screening, prospect maturation, and informed portfolio decision-making for operators.

Strategic Value for Investment and Licensing

The regional dataset is positioned to support transparent licensing processes and provide international operators with the technical confidence needed to assess investment opportunities offshore Mauritania. By integrating with broader West African subsurface frameworks, the survey offers deeper insight into basin architecture and petroleum systems. This regional perspective enables operators to evaluate Mauritania in the context of neighbouring proven and emerging basins, supporting play fairway analysis and a better understanding of cross-border geological trends.