PGS launches advanced reprocessing project in Angola’s Lower Congo Basin

PGS, a leader in seismic exploration technology, has initiated a comprehensive depth reprocessing project of the ANG Block 16 MC3D GeoStreamer dataset in Angola’s Lower Congo Basin, targeting deeper exploration prospects. Set to deliver final results in Q3 2024, this initiative marks a significant step in revitalizing deepwater exploration in the region.

Exploration Revival in the Lower Congo Basin

The Lower Congo Basin has witnessed a resurgence in exploration activity, characterized by numerous substantial discoveries and rapid development. This revival is attributed to a strategic review of past drilling results and hydrocarbon-charged reservoirs, particularly in the Lower Miocene and Oligocene post-salt plays. This analysis has unveiled potential overlooked hydrocarbon shows in the younger stratigraphy.

Adjacent blocks have demonstrated that deeper exploration successes often lie beneath non-commercial Upper Miocene reservoirs, suggesting untapped potential in similar structures.

Uncovering Block 16’s Hidden Gems

Block 16, which has been relatively dormant in terms of exploration since the early 2010s, is now under the spotlight. The most recent exploration well in this block was drilled in 2013. The earlier Bengo (1994) and Longa (1995) Upper Miocene discoveries in the northern part of Block 16 were the only known oil and gas finds until a recent re-evaluation. This re-evaluation has revealed that oil was also recovered from Upper Miocene reservoirs in the southern part of the survey area, indicating broader exploration prospects.

Innovative Reprocessing Techniques

PGS, in collaboration with its partners, including Angola’s National Oil, Gas and Biofuels Agency (ANPG), is employing modern depth imaging techniques for the reprocessing. These techniques are similar to those used in the neighboring Block 1/14 GeoStreamer MC3D survey, which yielded a more detailed view of the deeper post-salt section. The proximity of hydrocarbon accumulations in older reservoirs, along with evidence of oil charge to Upper Miocene units, offers promising indications for future exploration successes from the reprocessed ANG Block 16 dataset.

This reprocessing project by PGS is not just a technical exercise but a strategic move to unlock the hidden potential of Angola’s Lower Congo Basin, contributing to the dynamism of the global oil and gas industry.