TGS, NOCAL sign data reprocessing deal offshore Liberia

Energy data and intelligence provider TGS has collaborated with the National Oil Company of Liberia (NOCAL) to expand data access offshore Liberia

TGS will work to rejuvenate the existing legacy 2D and 3D datasets in Liberia's prospective Liberia and Harper Basins, aspiring to reach high subsurface clarity. 

This will help build a unified velocity model in depth, utilising cutting-edge imaging algorithms to produce the final migrated seismic data, which can prove crucial for prospectivity studies in Liberia's offshores.

The company has initiated this campaign since 2022, after the Liberia Petroleum Regulatory Authority (LPRA), in cooperation with NOCAL, opened direct exploration licensing negotiations for all offshore blocks over the Harper and Liberia basins in 2021. An already reprocessed 2D legacy seismic of approximately 12,097 kms is available for industry licensing.

Benefitting exploration

"At TGS, we are proud of our longstanding and successful partnership with Liberia, which we believe presents considerable offshore hydrocarbon opportunities. This high-quality 2D seismic data will be essential in promoting future licensing rounds offshore Liberia under a direct negotiation approach. It also allows E&P companies to further evaluate exploration opportunities in an under-explored but proven petroleum system adjacent to prolific hydrocarbon provinces," said David Hajovsky, executive vice-president of global multi-client at TGS.

Since Liberia's Petroleum Law came into effect in 2019, investment conditions were relaxed and more time frame for exploration was allowed. The reprocessed products by TGS add to the exploration prospects in the region with its consistent, continuous data set of several vintages, providing uninterrupted seismic attributes of higher confidence at target levels across the entire margin.

TGS has now taken on to the second phase to reprocess an additional 12,675 line kms over the Liberia and Harper Basins, bringing the total to over 24,700 kms.

Additionally, the company plans to reprocess approximately 15,616 sq kms of legacy 3D seismic data in the Liberia Basin.