Brazil creates the National Petroleum Council (CNP) to regulate oil exploration and production, laying institutional groundwork for a national oil policy

Petrobras (Petróleo Brasileiro S.A.) is established by federal law under President Getúlio Vargas, institutionalizing the “O petróleo é nosso” nationalist movement

Petrobras is formed as a state-controlled integrated oil company, with the federal government as controlling shareholder

Expansion of domestic refining and distribution to reduce dependence on imports

Early upstream focuses on onshore and shallow-water basins; Brazil remains structurally import-dependent for crude

Petrobras scales refining capacity and downstream logistics, supporting Brazil’s industrialization

Offshore technical competence begins as Brazil investigates continental shelf potential

Systematic exploration programs and basin mapping expand resource understanding, preparing for deeper offshore work

Global oil crisis sharply increases Brazil’s import bill, intensifying urgency for domestic production

Petrobras accelerates offshore exploration and technology development

Major offshore discoveries (notably Campos Basin) shift Brazil toward offshore production as a strategic pillar

Petrobras becomes a global reference in deepwater engineering, building practices for harsher offshore environments

Deepwater development and production growth continue in Campos Basin

Integrated operations strengthen: upstream growth supports refineries and fuels supply amid volatile markets

Brazil begins broader economic reforms; Petrobras adapts from monopoly-style operator toward a more competitive, governance-driven model

New petroleum legislation liberalizes the sector, effectively ending Petrobras’ legal monopoly and creating a competitive upstream framework

Modern regulatory regime forms, with concession-based licensing rounds opening space for private and international operators

Internal reorganization to compete under liberalization while retaining strong state control and national strategic importance

Petrobras’ common shares begin trading on the NYSE (ADR), increasing access to global capital and disclosure/governance expectations

Selective international expansion while maintaining Brazil-focused growth, especially offshore

Petrobras grows as an integrated energy company: upstream scale rises, downstream modernization continues, and natural gas gains importance

International projects expand in selected regions (Americas, Africa), reflecting broader ambitions

Brazil announces near oil self-sufficiency (symbolic milestone; balances vary by product and year)

Discovery and appraisal of the pre-salt petroleum systems (ultra-deepwater beneath thick salt) transform the resource base for Petrobras and Brazil

Large-scale pre-salt development concepts advance, requiring advanced subsea systems, new FPSOs, and complex logistics

New pre-salt governance model introduced (including production-sharing in designated areas); Petrobras takes central operating roles in key projects

Massive equity capitalization completed to help fund pre-salt development and reinforce global deepwater leadership

Pre-salt production scales up as capex surges across upstream and downstream megaprojects

Financial pressures grow: high investment needs, rising debt, and domestic fuel pricing policies compress margins

Operation Car Wash (Lava Jato) exposes extensive corruption and procurement fraud tied to Petrobras contracts and political networks

Governance shock triggers reputational damage and major financial restatements/impairments

Deleveraging and strategic refocus begin; stronger compliance and governance frameworks implemented

Asset divestment plans start to reduce debt and concentrate on higher-return areas

Pivot intensifies: prioritize pre-salt upstream and financial discipline; reduce exposure to non-core assets

Divestments and partnerships accelerate to monetize mature fields and reallocate capital to pre-salt

Pre-salt growth improves lifting costs and efficiency, strengthening cash generation

Major asset sales and new upstream arrangements reshape the portfolio; Petrobras positions as a leaner operator with stronger balance sheet metrics

Pre-salt becomes the dominant production engine, boosting competitiveness among offshore producers

COVID-19 shock and oil price collapse drive capital discipline and operational adjustments

Divestment and cost optimization programs continue

High oil prices and pre-salt productivity drive strong cash flow; debt reduction and shareholder distributions continue

Public debate intensifies on fuel pricing, dividends, and balancing state aims with minority shareholder returns

Continued focus on pre-salt with selective investments; energy transition attention grows around gas, efficiency, and lower-carbon options

Updated direction signals greater emphasis on energy transition investments alongside core oil and gas, still centered on high-return pre-salt assets

Portfolio debate broadens to refining/downstream roles in energy security alongside decarbonization planning

Balancing pre-salt growth as a globally significant deepwater base

Maintaining capital discipline and meeting governance expectations from global investors

Clarifying an energy transition pathway: lower-carbon operations, gas, and emerging renewables/biofuels initiatives depending on plan updates

Ongoing evolution toward a broader integrated energy company identity: sustaining offshore leadership while responding to decarbonization pressures, Brazilian policy priorities, and global market dynamics