Oil & Gas

Energy data and intelligence provider TGS has launched a large-scale multi-client 3D seismic initiative offshore Mauritania and across the wider West African Atlantic Margin, known as the Mauritania MegaSurvey.

The project represents a major expansion of TGS’ offshore Mauritania coverage and is designed to support regional-scale exploration and subsurface analysis.

Through the MegaSurvey, TGS has secured more than 100,000 contiguous square kilometers of modern seismic data, significantly enhancing its existing multi-client library. The dataset is strategically positioned for seamless extension and integration, enabling operators to access comprehensive seismic coverage across Mauritania’s offshore areas and undertake full source-to-sink interpretations from nearshore zones to ultra-deepwater settings.

The harmonized 3D seismic dataset allows operators to interpret complex regional geology with improved continuity across multiple exploration plays. By reducing geological uncertainty and strengthening structural and stratigraphic understanding, the MegaSurvey supports robust basin screening, prospect maturation, and informed portfolio decision-making, while helping companies de-risk acreage evaluation ahead of drilling or licensing commitments.

TGS’ offshore activities in Mauritania are supported by the Mauritanian Ministry, reflecting confidence in the quality and value of its advanced datasets. According to David Hajovsky, Executive Vice President of Multi-Client at TGS, the MegaSurvey delivers strategic regional insight by integrating Mauritania into broader West African subsurface frameworks, strengthening play fairway analysis and reinforcing TGS’ leadership in multi-client seismic solutions across offshore West Africa.