By Brazil Stock Guide – While Petrobras is still waiting for an Ibama license to drill in Brazil’s Equatorial Margin, the country is already turning its eyes elsewhere. The National Petroleum Agency (ANP) is expanding its exploration map — from the far north of Roraima to the interior of Minas Gerais — in a move that marks the beginning of a “post-Equatorial Margin” era: less dependent on mega offshore projects and more open to new players and cleaner energy sources.
At a public hearing on October 9, the ANP detailed its proposal to add 275 new exploratory blocks and five marginal accumulation areas to the Permanent Concession Offer (OPC). The update brings the total to 451 areas under concession, spread across 11 sedimentary basins. ANP director Pietro Mendes called the measure “fundamental for rebuilding Brazil’s exploration portfolio and strengthening competitiveness in the sector.”
Tacutu: Brazil’s northern frontier
Among the new areas, the Tacutu Basin, located in Roraima on the border with Guyana, stands out as the symbol of this new phase. It is the first time Brazil has ever offered blocks in this region, which shares the same geological system that made Guyana one of the world’s most productive oil provinces, thanks to discoveries by ExxonMobil, Hess, and CNOOC.
ANP’s Superintendent of Licensing Promotion, Marina Abelha, noted during the hearing that “recent discoveries on the Guyanese side indicate strong exploratory potential in Brazil’s portion as well.” The proximity to the Guiana discoveries could attract new investors seeking frontier opportunities.
Parnaíba and São Francisco: gas and hydrogen potential
Further south, two onshore basins are taking the spotlight: Parnaíba and São Francisco.
The Parnaíba Basin, located between the states of Maranhão and Piauí, is the heart of the reservoir-to-wire (R2W) model used by Eneva, which converts extracted natural gas directly into power generation. According to Abelha, 24 new blocks have been added to the area, considered highly “gas-prone” and strategically important to reduce Brazil’s dependence on oil-fired thermal plants.
The São Francisco Basin, spanning Minas Gerais and Bahia, received 36 new exploratory blocks. ANP’s Environmental Superintendent Vanessa Lemos explained that technical adjustments were made to exclude environmentally sensitive areas and reduce potential conflicts with local communities. “São Francisco is emerging not only as a gas frontier but also as a promising region for natural hydrogen exploration,” she said.
The ANP and the Ministry of Mines and Energy (MME) confirmed they are drafting a decree to regulate natural hydrogen exploration, referring to hydrogen that is spontaneously generated in underground geological formations. Mendes said the ANP is expected to become the regulatory authority for this new activity, “paving the way for a more diversified and secure energy future.”
Mature basins and new players
In addition to the new frontiers, the ANP is reopening opportunities in mature basins such as Recôncavo (Bahia) and Potiguar (Rio Grande do Norte). These areas have lower operating costs and existing infrastructure, making them ideal for small and mid-sized operators.
The Recôncavo Basin includes 57 new blocks, while the Potiguar Basin adds 33 new blocks and one marginal accumulation area. The aim is to empower independent and mid-cap operators, such as PetroReconcavo, 3R Petroleum, and Origem, which have been expanding onshore production over the past three years.
Planning Coordinator Vitor Bourbon said the updated offer “seeks to expand geological knowledge and attract companies with different profiles and investment capacities.”
The terms are flexible: minimum guarantees start at R$10,000, and signing bonuses range from R$50,000 to R$47 million, depending on block type and depth. The Permanent Offer model allows companies to declare interest at any time, without waiting for a formal bid round — a mechanism that keeps the upstream sector active even amid regulatory uncertainty.
The Equatorial impasse
While new frontiers open up, the Equatorial Margin remains in limbo. Petrobras has already completed emergency-response simulations and technical assessments in the Foz do Amazonas Basin, but final environmental authorization is still pending. Ibama continues to analyze the conditions for drilling in Block FZA-M-59, the most controversial in the area.
The government faces a balancing act: ensuring future oil and gas supply while honoring its climate commitments. By moving forward with the Permanent Offer, the ANP provides a regulatory “release valve” — keeping investments flowing while the environmental debate unfolds.
Between carbon and hydrogen
The ANP’s new exploration map outlines a broader Brazil — from Tacutu to São Francisco, via Parnaíba, Recôncavo, and Potiguar. It’s a strategy built on pragmatism: the country still needs oil and gas, but it’s also beginning to explore the limits of natural hydrogen and new onshore energy corridors. The Equatorial Margin may still become Brazil’s next major production hub — if it gets the license.
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