OSLO, Norway, [December, 19, 2025] – TGS, a global leader in energy data and intelligence, has launched the Mauritania MegaSurvey, a large-scale multi-client 3D seismic project designed to support exploration across offshore Mauritania and the wider West African Atlantic Margin.
The Mauritania MegaSurvey comprises over 100,000 contiguous square kilometers of modern seismic data, strategically positioned to extend and integrate with TGS’ existing offshore Mauritania multi-client library. This survey will generate one seamless volume across the offshore of Mauritania allowing regional interpretation of the full source to sink from nearshore to the ultradeep.
The MegaSurvey provides operators with regional-scale seismic continuity across multiple exploration plays, supporting robust basin screening, prospect maturation, and informed portfolio decision-making. By delivering a harmonized 3D seismic dataset over a large contiguous area, the survey enables more confident geological interpretation, improved understanding of structural and stratigraphic frameworks, and reduced exploration uncertainty. Access to this data allows companies to allocate exploration capital more efficiently by de-risking acreage evaluation prior to committing drilling or licensing decisions.
The survey also reflects TGS’ continued commitment to supporting Mauritania’s offshore energy development. Through close collaboration with the Mauritanian Ministry, TGS is contributing to the promotion of the country’s offshore potential by establishing a modern, accessible subsurface data foundation. This regional dataset supports transparent licensing processes and provides international operators with the technical confidence needed to assess investment opportunities offshore Mauritania.
David Hajovsky, Executive Vice President of Multi-Client at TGS, commented, “The Mauritania MegaSurvey delivers strategic regional value for our customers. By integrating with broader West African subsurface frameworks, the survey provides deeper insight into basin architecture and petroleum systems along the Atlantic Margin. This regional perspective enables operators to assess Mauritania in the context of neighboring proven and emerging basins, supporting play fairway analysis and a more robust understanding of cross-border geological trends.”
The Mauritania MegaSurvey further strengthens TGS’ multi-client leadership offshore West Africa and complements the company’s extensive portfolio of 2D seismic, 3D seismic, and well data across the region.
For more information about the Mauritania MegaSurvey or to discuss data licensing opportunities, please contact us at www.tgs.com.
About TGS
TGS provides advanced data and intelligence to companies active in the energy sector. With leading-edge technology and solutions spanning the entire energy value chain, TGS offers a comprehensive range of insights to help clients make better decisions. Our broad range of products and advanced data technologies, coupled with a global, extensive and diverse energy data library, make TGS a trusted partner in supporting the exploration and production of energy resources worldwide. For further information, please visit www.tgs.com (https://www.tgs.com/).
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