TotalEnergies has agreed to sell a 40 percent stake in Nigerian offshore block OPL257 to South Atlantic Petroleum Ltd., known as SAPETRO, under a farm-out agreement that will allow the companies to jointly assess a significant oil discovery straddling the boundary between two adjacent blocks. When the transaction closes, TotalEnergies will maintain a 50 percent interest and remain the operator, while SAPETRO will hold 40 percent and Conoil the remaining 10 percent. The company did not disclose financial terms. Block OPL257 is located roughly 150 kilometers off the Nigerian coast and sits next to block PPL261, where TotalEnergies holds 24 percent and where the Egina South field was discovered in 2005.
The discovery spans the boundary between the two blocks, meaning the portion lying within OPL257 must be assessed before its size or economic viability can be determined. Appraisal work is scheduled for the coming months. If results prove commercial, the partners plan to develop Egina South as a tie-back to the Egina floating production, storage and offloading vessel located about 30 kilometers away. A tie-back connects a new field to an existing platform or vessel, generally representing one of the more cost-effective approaches to bringing offshore oil to market.
According to Mike Sangster, senior vice president for Africa exploration and production at TotalEnergies, the transaction consolidates the company's long-term partnership with SAPETRO, which is already a partner in the adjacent PPL261 block. Sangster said the deal aligns with TotalEnergies' strategy of developing low-cost, low-emission resources while leveraging existing infrastructure. Completion remains subject to customary conditions, including regulatory approvals, though the company provided no timeline for closing or for drilling the first appraisal well.
The arrangement reflects broader trends in West Africa's offshore sector, where large international energy companies have been reducing or restructuring positions in some assets to concentrate capital on projects using existing infrastructure that offer lower costs and reduced emissions per barrel. Local and regional companies have increasingly assumed early-stage exposure alongside experienced operators. For TotalEnergies, the sale reduces its exposure to an unproven resource while preserving operatorship and a controlling stake. For SAPETRO, the deal expands its position in a familiar area, increasing its potential stake in any eventual Egina South development.
Nigeria remains one of Africa's largest oil producers, and deepwater fields have been vital to reversing years of production decline and disruption in onshore and shallow-water areas. Regulatory approval from Nigerian authorities will be required before the interest transfer takes effect. The appraisal results will determine whether the OPL257 portion of Egina South contains sufficient recoverable oil to justify a tie-back development. Sangster's reference to a success case indicates no investment decision has been made and that appraisal could still yield disappointing results.