French company Viridien has announced the launch of a new multi-client seismic reimaging programme over block 22, located offshore Angola. Covering an area of 4,300 square kilometres, the project aims to deliver updated data to operators ahead of the country’s upcoming licensing round. Fast-track results are expected in the first quarter of 2026, with final deliverables scheduled between the third and fourth quarters of the same year.
Proprietary technologies applied to the Atlantic margin
The reimaging will be carried out using Viridien’s latest proprietary technologies, including Time-Lag Full Waveform Inversion (FWI), Q-FWI, Q-Kirchhoff, and advanced deghosting and demultiple techniques. Block 22 is located in a geologically promising zone aligned with the same trend that hosts the proven Cameia and Golfinho fields.
This initiative forms part of Viridien’s broader regional strategy, with an existing 2,900 square kilometre dataset over adjacent block 20/11. Combined, the two areas represent over 7,200 square kilometres of modern broadband Pre-Stack Depth Migration (PSDM) data. This regional coverage will allow operators to conduct detailed evaluations of both pre-salt and post-salt petroleum systems in the Kwanza Basin.
Strengthening ties with the ANPG
Viridien stated that the new programme reflects its long-term commitment to Angola and reinforces its collaboration with the Agência Nacional de Petróleo, Gás e Biocombustíveis (ANPG). The company highlighted the added value of this updated database for operators seeking to secure blocks in the upcoming licensing round.
According to Viridien’s Head of Earth Data, the quality of the reprocessed data will provide operators with critical insight for optimising exploration strategies in this underexplored region. The Kwanza Basin remains one of the most promising offshore areas along the southern Atlantic margin, particularly for pre-salt plays.
