Seismic Imaging

TGS wins rights to reprocess 11,000 km2 of Guinea-Bissau 3D seismic

TGS wins rights to reprocess 11,000 km2 of Guinea-Bissau 3D seismic

Oslo – October 15, 2026 -- TGS has secured multi-client rights from state agency PetroGuin to reprocess more than 11,000 km2 of JAAN 3D seismic data across Guinea-Bissau, with final products due in Q4 2027.

TGS builds on 2019 reprocessing with new imaging tools

The agreement builds on the parties' previous 2019 PSDM reprocessing. TGS will apply elastic dynamic-matching full waveform inversion (E-DMFWI) and Kirchhoff pre-stack depth migration (KPSDM). The company expects a significant uplift in image quality compared with the existing data.

Improved imaging targets clastic and carbonate plays

The upgraded images are meant to improve assessment of both clastic and carbonate targets across the margin. TGS says this will give explorers greater confidence in evaluating prospectivity as they plan future exploration activity in Guinea-Bissau.

TGS Reprocesses 514 km2 Seismic Data Over PETRONAS Megah Find

TGS Reprocesses 514 km2 Seismic Data Over PETRONAS Megah Find

OSLO – October 11, 2026 -- TGS has launched a 514-square-kilometer 3D PSDM Multi-Parameter-FWI reprocessing project over PETRONAS' 2025 Megah discovery in Block SB-3K, offshore Sabah, Malaysia, with final products due in April 2027.

TGS applies elastic full waveform inversion to its 2017 Sabah dataset

The project applies TGS' Elastic Multi-Parameter Full Waveform Inversion and depth imaging technologies to the company's own legacy Geostreamer Sabah multi-client 3D Phase 2 dataset, acquired in 2017. TGS aims to deliver an improved dataset built on a high-resolution velocity model and diffraction imaging across the Megah Field.

Processing began in July 2026 and runs to April 2027

Work started in July 2026. Final products are scheduled for April 2027, roughly nine months after the project began.