Geology

The complete dataset will be available for licensing from Q2 2026. (Image source: Metatek)

United Kingdom-based geophysical company, Metatek-Group Ltd, deployed its modern technology to conduct an airborne survey of the Kwanza Basin onshore Angola 

Full Tensor Gravity Gradiometry (eFTG), scalar gravity, magnetic and LiDAR data not only offered new insights into the subsurface but also identified precise locations that hold the most potential for future drilling programmes. Data accuracy from near-surface through to deep basement is covered by eFTG, which is known to be the highest-resolution airborne gravity gradiometry technology.

When operators are planning surface access, geomorphological interpretation and environmental baselining, they can resort to high-resolution terrain models generated by LiDAR data.

The gravity and magnetic data captured enables enhanced imaging of the Basin’s architecture, including fault and transfer zone geometries and regional structural domains, alongside more detailed analysis of sediment thickness and the distribution of salt, carbonate and volcanic bodies. 

Hydrocarbon resources besides, critical minerals could also be identified from selected priority areas flown at higher resolution. This will especially support the Angolan state-owned oil company Sonangol's diversification plans to critical minerals.  

Conducted in partnership with Angolan-based upstream consultancy Striped Horse and the Agencia Nacional de Petroleo, Gas e Biocombustiveis (ANPG), the survey captures the full Kwanza Basin, with over 36,000 kilometres flown.

The complete dataset - together with optional interpretation products including block viability ranking - will be available for licensing from Q2 2026 under a multi-client model.

Mark Davies, CEO of Metatek, said, “This survey represents a step-change in regional and prospect-scale subsurface understanding of the onshore Kwanza Basin. The integration of eFTG, gravity, magnetics and LiDAR deliver a robust, basin-wide framework enabling more informed exploration and de-risking seismic planning and acreage decisions.”

The Nigeria Laide multi-client 3D survey. (Image source: TGS)

As Nigeria continues to build its domestic industry to attract global investors, seismic surveys remain an integral part of the process 

The latest research comes from the eastern Niger Delta, which is considered one of the country's most prolific hydrocarbon regions, covering approximately 11,700 sq kms. The Nigerian Upstream Petroleum Regulatory Commission has partnered with TGS and SeaSeis Geophysical Limited to announce the Nigeria Laide multi-client 3D survey, which focuses within the outer fold and thrust belt of the deepwater eastern Niger Delta. This area is marked with complex geological challenges such as stacked toe-thrust structures, elongate anticlines (e.g. Bolia–Chota), inner fold-and-thrust-belt geometries, and shale diapirs/mud volcanoes. 

These are addressed with the help of GeoStreamer dual-sensor system, long offsets, wide tow, and a triple-source configuration that are capable of generating modern broadband seismic data to support full-integrity PSTM and Q-PSDM through advanced Elastic FWI-driven velocity model building. This makes it easy for operators and explorers to finalise the next steps based on precisely acquired insights from otherwise inaccessible and challenging zones. 

"Nigeria continues to play a crucial role in the global supply of oil and gas. The expansion of our multi-client library in Nigeria in partnership with the government through the Laide 3D showcases our commitment to furthering hydrocarbon exploration in the region. By utilising industry-trusted acquisition solutions, TGS provides insights that accelerate exploration activity and allow operators to fulfil their exploration ambitions," said Kristian Johansen, CEO of TGS. 

The modern, high-fidelity Nigeria Laide multi-client 3D survey is backed by industry funding, and comes soon after a survey in the western Niger Delta Basin that was announced by Shearwater last December. 

The survey spans approximately 12,600 line kilometers. (Image source: TGS)

Energy data and intelligence provider, TGS, has announced the Ultra Profundo multi-client 2D survey offshore Angola

The survey spans approximately 12,600 line kilometers, and Ramform Victory began operations earlier in Q1. Data acquisition is likely to be completed in around 100 days, with fast-track products available in Q3. Full data processing is scheduled for completion in Q2 2027.

The Ultra Profundo multi-client 2D survey marks the first 2D multi-client acquisition over Angola’s ultra deep-water areas since 2015 and aims to reach previously underexplored region. The survey delivers modern, long-offset seismic data critical for imaging complex pre-salt and top-salt structures as well as basin floor channel systems, significantly enhancing regional geological understanding.

Kristian Johansen, CEO of TGS, said, “Angola’s ultra deep-water margin represents one of the most exciting frontier exploration opportunities in West Africa. Our Ultra Profundo multi-client 2D program delivers high-quality seismic coverage needed to unlock pre-salt and sub-salt potential. By leveraging TGS’ acquisition and imaging capabilities, we will provide high-quality data supporting future exploration activities.”

TGS has secured more than 100,000 contiguous sq km of modern seismic data.

Energy data and intelligence provider, TGS, has tapped offshore Mauritania and the wider West African Atlantic Margin for a large-scale multi-client 3D seismic project called the Mauritania MegaSurvey 

With this initiative, TGS has secured more than 100,000 contiguous square kilometers of modern seismic data, which will add to its existing offshore Mauritania multi-client library. Strategically positioned for extension and integration, the move will allow TGS to give operators easy and one-stop access across the offshore of Mauritania, making possible the regional interpretation of the full source to sink from nearshore to the ultradeep.

For an informed portfolio decision-making, operators can interpret complex regional-scale seismic with continuity across multiple exploration plays, simplifying robust basin screening and prospect maturation. The MegaSurvey's harmonised 3D seismic dataset over a large contiguous area eliminates uncertainties by ensuring confident geological interpretation backed by the clarity of structural and stratigraphic frameworks. Companies can leverage the survey for de-risking acreage evaluation before going ahead with drilling or licensing decisions.

TGS’ interests in the Mauritanian offshore is supported by the Mauritanian Ministry as its advanced datasets make the region attractive for exploration investment opportunities.

David Hajovsky, executive vice president of Multi-Client at TGS, said, “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.