Petrobras enter Gulf of Guinea as Arthur Eze sell 75% stake for Sao Tome oil block

Brazil state-owned oil giant Petrobras don expand im reach for West Africa after acquiring 75% operating stake for Block 3 wey dey offshore Sao Tome and Principe from Arthur Eze him Oranto Petroleum.

The agreement wey dem announce on April 17 go make Petrobras take over operatorship of the block from Oranto, wey currently hold 90% stake. National Petroleum Agency of Sao Tome and Principe still retain im 10% interest.

Wetin go happen after everything finish na say Petrobras go hold 75%, Oranto go hold 15%, and ANP-STP go hold 10%, but all these ones dey subject to regulatory approvals.

This deal align with Petrobras 2026–2030 strategy to diversify im portfolio and replenish reserves through frontier exploration. E also mark another step for the company renewed push into Africa after dem scale back international operations for early 2010s following Operation Car Wash fallout.

Since Petrobras return to the continent for 2024, the company don build growing portfolio across Gulf of Guinea and southern Africa, including stakes for multiple offshore blocks for Sao Tome and Principe, Namibia, and South Africa.

The region dey attractive because of geological similarities with Brazil pre-salt basins, wey don drive im domestic oil boom.

For Oranto side, the transaction reflect familiar strategy. Arthur Eze found the company, and e don build pan-African exploration portfolio by securing early-stage licences and partnering with larger operators to develop them.

Meanwhile, Oranto Petroleum don face growing challenges across key jurisdictions, particularly for Senegal and Equatorial Guinea, as governments and operators tighten oversight of oil licences and strategic projects.

For Senegal, authorities don revoke one of the company offshore exploration licences after citing failure to meet financial guarantees and limited exploration activity over several years.

For Equatorial Guinea, Atlas Oranto affiliate lose im stake for key offshore block following dispute with operator Chevron over funding obligations, wey dey show the risks wey minority partners dey face for capital-intensive projects.

This transaction bring Brazil state oil giant into Gulf of Guinea and e dey one of the most significant upstream transactions for the region this year.

Arthur Eze, wey don build one of the largest privately held exploration portfolios for Africa through Oranto and im subsidiary Atlas Petroleum, retain minority position while handing operational control to company with deepwater expertise wey few African independents fit match.

Oranto and Atlas Petroleum hold exploration licences across multiple African countries and dem don dey among the most active indigenous operators for frontier basins.