Petrobras buys 75% of Oranto and becomes the operator of block 3 in São Tomé and Príncipe, resuming its strategy in Africa to diversify its portfolio and replenish oil and gas reserves.

Written by Carla Teles

Published on 17/04/2026 at 21:51

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Petrobras assumes operation of block 3 offshore São Tomé and Príncipe and says that the movement is part of a portfolio diversification plan and a search for new oil and gas frontiers

Petrobras announced this Friday (17) that it has signed a contract to buy 75% of Oranto’s stake and assume operation of block 3 offshore São Tomé and Príncipe, Africa. The value of the operation was not disclosed.

With the completion of the transaction, the consortium of block 3 will have Petrobras as operator (75%), Oranto (15%), and the National Petroleum Agency of São Tomé and Príncipe (10%), and the state-owned company claims that the movement is part of its strategy for portfolio diversification and recomposition of oil and gas reserves.

What Petrobras is buying and what changes in block 3

Petrobras reported that it has signed a contract to buy a stake from Oranto and, with the completion of the transaction, will operate block 3 in São Tomé and Príncipe.

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How the consortium looks after the transaction

With the operation completed, the consortium of block 3 will consist of:

Petrobras as operator with 75%
Oranto with 15%
National Petroleum Agency of São Tomé and Príncipe (ANP-STP) with 10%

Petrobras emphasized that the value of the transaction was not disclosed.

Why Petrobras is returning to Africa

Petrobras stated that it resumed its operations on the African continent since 2024 and already has stakes in blocks in São Tomé and Príncipe.

In the statement, the company directly relates the movement to its corporate strategy: the operation “reinforces exploratory activity on the African continent” with a focus on portfolio diversification and alignment with the long-term plan to recombine oil and gas reserves through exploration in new frontiers, in partnership with other players.

What this step indicates about the reserve strategy

Petrobras ties the decision to a very specific objective: recomposition of reserves. When the company talks about “new frontiers” and “exploratory activity,” it is pointing to the need to open paths beyond what is already mapped, to sustain future production.

By choosing to operate block 3, Petrobras also takes on more responsibility in the process, which can accelerate decisions and provide more control over the project’s stages.

Do you see Petrobras’s return to Africa more as a natural diversification move, or as a message that the competition for new reserves is becoming tighter?

Petrobras buys 75% of Oranto and becomes the operator of block 3 in São Tomé and Príncipe, resuming its strategy in Africa to diversify its portfolio and replenish oil and gas reserves.

Petrobras assumes operation of block 3 offshore São Tomé and Príncipe and says that the movement is part of a portfolio diversification plan and a search for new oil and gas frontiers

What Petrobras is buying and what changes in block 3

How the consortium looks after the transaction

Why Petrobras is returning to Africa

What this step indicates about the reserve strategy

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Petrobras buys 75% of Oranto and becomes the operator of block 3 in São Tomé and Príncipe, resuming its strategy in Africa to diversify its portfolio and replenish oil and gas reserves.

Petrobras assumes operation of block 3 offshore São Tomé and Príncipe and says that the movement is part of a portfolio diversification plan and a search for new oil and gas frontiers

What Petrobras is buying and what changes in block 3

How the consortium looks after the transaction

Why Petrobras is returning to Africa

What this step indicates about the reserve strategy

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Great Atlantic Sargassum Belt has ceased to be a climatic phenomenon and has become a biological system that feeds on itself, with 8,000 kilometers in length, 37 million tons of algae, and scientists confirm that it is now permanent.

China is building an artificial island in the middle of the sea, covering 20 km², to construct the largest offshore airport in the world, the Dalian Jinzhouwan. This $4.3 billion project is anchored on more than 3,000 pillars embedded in the rock beneath the ocean and is scheduled to open in 2035.

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