TGS Launches 2D Seismic Data Reprocessing Program Off São Tomé and Príncipe

Norwegian energy data and intelligence company TGS has initiated an exciting new phase in hydrocarbon exploration off the west coast of Africa, specifically around São Tomé and Príncipe. The company is diving into a comprehensive 2D seismic data reprocessing program aimed at uncovering hidden potential in the region’s underexplored offshore basin.

Overview of the Project

In collaboration with the Agência Nacional do Petróleo de São Tomé e Príncipe (ANP-STP), TGS is embarking on the São Tomé and Príncipe 2D PSDM reprocessing project. This ambitious initiative encompasses a full reprocessing of 14,651 kilometers of 2D seismic data, which includes four original surveys that TGS acquired between 1999 and 2005. The reprocessing aims to enhance the understanding of subsurface geology, crucial for future exploration activities.

Advanced Technology for Enhanced Imaging

The current project builds on a previous data reprocessing effort from 2014, but with a modern twist. Leveraging advanced technology, TGS employs a comprehensive workflow that includes:

• Velocity Model Building via Dynamic Matching Elastic Full Waveform Inversion (E-DMFWI): This method improves the accuracy of seismic data interpretations, allowing for better subsurface imaging.

• Kirchhoff Prestack Depth Migration (KPSDM): This technique ensures that the final seismic images are not just clearer but also more geologically consistent.

The result? A significant enhancement in imaging quality, providing higher confidence in geological interpretations that are vital for prospective explorations.

Commitment to Exploration Success

David Hajovsky, the Executive Vice President of Multi-Client at TGS, noted the company’s unwavering commitment to the exploration potential of São Tomé and Príncipe’s offshore basin. He stated, “By applying our most advanced imaging technology to this dataset, we are giving operators the subsurface clarity needed to confidently assess subsurface prospectivity.” This commitment resonates strongly within the energy community, emphasizing a drive not just for profit, but also for sustainable and responsible exploration.

Addressing Geological Challenges

The offshore area surrounding São Tomé and Príncipe is not devoid of challenges. Its complex geological landscape features active volcanic processes, shallow channelization, and complications from mass transport complexes. Historically, these factors have made clear imaging and accurate depth positioning of seismic targets difficult.

TGS’s enhanced reprocessing project aims to tackle these issues head-on, promising a clearer view of the subsurface in areas where older datasets failed to meet the imaging demands. This clarity is particularly crucial for operators looking to identify and mature new prospects confidently.

Facilitating Investment Decisions

By improving image quality in these challenging environments, TGS is positioning the reprocessed data as a valuable resource for potential investors and stakeholders. Such advancements are expected to lay a stronger technical foundation for the identification and maturation of promising oil and gas prospects, thereby supporting more informed investment decisions ahead of anticipated licensing activity in the region.

Timeline for Project Completion

The project is set on an ambitious timeline, with TGS emphasizing that a prioritized subset of imaging lines will be delivered within just seven months. The complete dataset is anticipated to be finalized by Q3 2027, supported by industry funding. This rapid turnaround signifies TGS’s dedication to advancing industry knowledge and exploration readiness in the region.

Recent Developments

The commencement of this seismic reprocessing project follows TGS’s recent achievement of securing a 4D streamer acquisition contract in Australian waters. This showcases the company’s expanding footprint and innovative capacity in the global energy sector, reinforcing its role as a leader in geophysical intelligence.

In this dynamic landscape of energy exploration, TGS is not only enhancing its datasets but also contributing to the broader efforts of making responsible use of natural resources in regions rich with potential. The expectation is that these reprocessed data sets will invigorate the energy exploration scene in São Tomé and Príncipe, paving the way for both national growth and energy security.