Oil & Gas in
South America
South America’s oil and gas market is shaped by two different operating systems: Argentina’s Vaca Muerta and the infrastructure required to move its output, and Brazil’s offshore pre-salt platform. Pipelines, LNG, power generation, petrochemicals and industrial demand determine how production becomes durable market value.
Argentina and Brazil dominate the Southern Cone oil and gas map, but their markets cannot be read through the same model. Brazil is an established offshore operating market. Argentina is an unconventional production and infrastructure-expansion market whose next phase depends on domestic pipeline reconfiguration, regional exports and LNG development.
The central commercial question is therefore not the size of the resource base. It is which infrastructure is operating, which capacity is being expanded, which projects are only approved or planned, and which companies control purchasing and execution at each stage.
Market reading: production is only the first layer
Vaca Muerta has moved beyond geological promise and now supports material oil and gas production. Its growing output has also exposed the limits of a transport network designed around older supply geographies, imported Bolivian gas and different domestic flow directions.
Argentina is now rebuilding the commercial meaning of that network. Capacity must be reassigned, expanded or redirected toward domestic demand, thermal power, Chile, Brazil and future LNG exports. Each route has a separate regulatory, financing and construction status.
Two oil and gas systems shape the regional market
Argentina: production plus infrastructure build-out
Vaca Muerta combines operating shale production with constrained transport, new pipeline capacity, Pacific oil exports, regional gas options, LNG development and industrial gas demand.
Brazil: offshore operating platform
Brazil’s market is built around pre-salt fields, FPSOs, deepwater engineering, long operating chains, refining and Petrobras-led procurement at industrial scale.
Chile: export outlet and demand market
Chile matters through the Pacific crude route, LNG infrastructure, industrial consumption and its role as a potential market interface for Argentine energy exports.
Regional integration
Cross-border value depends on interconnectors, transport contracts, private investment, regulation and reliable supply commitments rather than political declarations alone.
Argentina: from Vaca Muerta to an energy and industrial system
Vaca Muerta is the production base, not the entire market. The operating system begins in Neuquén, where wells, gathering, treatment, roads, camps, equipment, local labor and service yards make production possible. It then extends into pipelines, power generation, refining, petrochemicals, fertilizer feedstock and export infrastructure.
Vaca Muerta production
Shale oil and gas create the physical supply base, but field output remains dependent on drilling cycles, treatment, evacuation capacity and operator investment.
Añelo service economy
Roads, logistics, maintenance, accommodation, safety, equipment and specialized labor determine whether the basin can support sustained operations.
Domestic gas transport
The Perito Moreno pipeline and the wider national system connect Neuquén supply with central and northern demand, while capacity and contracts are being reconfigured.
Export corridors
Crude exports to the Pacific, possible gas routes to Brazil and the planned Atlantic LNG chain create different markets with different infrastructure requirements.
Industrial demand
Thermal power, petrochemicals, fertilizer production and specialized industrial facilities convert gas availability into domestic value when projects are technically and commercially viable.
Argentina’s energy opportunity is now an infrastructure-allocation question: which molecules move through which route, under which contract, to which market?
Argentina’s gas-pipeline system is being structurally reconfigured
Resolution 66/2026 describes a permanent change in Argentina’s gas geography. Production from the Neuquén Basin has grown, Northwest Basin supply and Bolivian imports have declined, and historical north-to-south flow assumptions no longer match the present supply system.
The official name of the trunk pipeline formerly known as the Gasoducto Presidente Néstor Kirchner is now the Gasoducto Perito Francisco Pascasio Moreno. Its first section is operating, while later expansion and contractual use must be read separately.
First pipeline section
The Tratayén–Salliqueló section adds physical evacuation capacity, but it does not mean that every element of the former Transport.Ar programme was completed.
14m m³/day
Resolution 676/2026 approved the TGS expansion project under RIGI to create 14 million cubic metres per day of incremental capacity.
Capacity reassignment
Contracts, routes and transport capacity are being adjusted to new production basins and changed flow directions.
Status discipline: an operating first section, an approved expansion and a fully utilized national transport system are three different conditions. They must not be presented as one completed corridor.
The San Matías corridor gives LNG a concrete infrastructure layer
Argentina’s LNG strategy is no longer only a broad ambition. Resolution 873/2026 approved the San Matías Pipeline project under RIGI. The planned dedicated line would run approximately 480 kilometres from Tratayén to San Antonio Oeste, use a 36-inch diameter and carry up to 27 million cubic metres of gas per day toward future liquefaction installations.
The project creates a defined corridor between Vaca Muerta and Atlantic LNG infrastructure. Its current status remains a project with an approved investment framework and stated design. RIGI approval is not evidence of completed construction, commissioning, stable gas delivery or commercial LNG exports.
Supply
Upstream producers must provide sustained gas volumes under contracts that justify dedicated transport and liquefaction investment.
Pipeline
Construction, compression, route execution and operating reliability determine whether the 27m m³/day design becomes usable capacity.
Liquefaction
Pipeline completion does not by itself create LNG exports; liquefaction trains, marine infrastructure and commissioning are separate stages.
Market
Long-term sales, shipping, pricing and financing determine whether the export chain becomes commercially durable.
Argentina–Brazil gas integration remains a route-selection problem
The bilateral technical report completed in April 2026 assessed alternatives for firm Argentine gas exports to Brazil through Bolivia, Paraguay, Uruguay and a direct connection. It also identified Brazil’s industrial demand as a potential anchor for deeper regional integration.
The report is evidence of technical evaluation and political coordination. It is not evidence that one route has secured financing, capacity, customers or a final investment decision. All options require additional transport infrastructure in Argentina to evacuate larger volumes from Vaca Muerta.
Commercial threshold: a feasible interconnection becomes a gas market only when transport rights, price, volume, duration, credit, regulation and construction responsibility are aligned.
Argentina company and infrastructure cases
YPF
YPF links Vaca Muerta production with national energy policy, pipeline development, refining, fuel markets and the emerging LNG export chain.
Read YPF company insight →Vista Energy
Vista represents the focused shale-oil model: concentrated Vaca Muerta execution, production growth, cost discipline and increasing exposure to export routes.
Read Vista Energy insight →Pampa Energía
Pampa connects upstream gas with electricity generation and petrochemicals, making it a central case for domestic gas monetization beyond the wellhead.
Read Pampa Energía insight →Pluspetrol
Pluspetrol combines Argentine unconventional exposure with a broader regional upstream portfolio and operating model.
Read Pluspetrol company insight →These companies do not share one procurement structure. Operator purchasing, project-company procurement, pipeline EPC, LNG development, power generation and petrochemical demand create separate qualification paths and decision centres.
Brazil is the operating offshore benchmark
Brazil’s oil and gas position is built around active deepwater production rather than a future resource-conversion story. Petrobras reported total oil and natural-gas production of 2.99 million barrels of oil equivalent per day in 2025. Pre-salt output represented 82 percent of total company production.
New FPSOs, ramp-up performance, subsea systems, offshore support, maintenance, reservoir management and long supplier chains define the Brazilian market. This creates a different opportunity profile from Argentina: more recurring operational demand, but also mature qualification requirements and complex operator structures.
Petrobras
Petrobras is the central operating platform for Brazil’s offshore production, refining, gas systems and long-term investment programme.
Read Petrobras company insight →Brazil green gas
Brazil’s gas market also includes biomethane and low-carbon gas, connecting regulation, industrial demand and existing distribution infrastructure.
Read Brazil green-gas analysis →Gas monetization also depends on domestic industrial demand
Export infrastructure receives most attention, but domestic gas value also depends on thermal power, petrochemicals, fertilizer feedstock and specialized industrial systems. These users can stabilize demand and deepen local value creation, although each project has its own capital, technology and operating risks.
Power generation
Gas availability affects thermal dispatch, electricity costs and the replacement of liquid fuels. Pipeline allocation therefore has direct power-market consequences.
Fertilizer feedstock
Urea and ammonia projects require reliable gas supply, competitive pricing, financing and operating infrastructure. Resource availability alone does not guarantee fertilizer output.
Petrochemicals
Integrated companies can connect gas production with petrochemical demand, but economics depend on product markets, plant reliability and long-term feedstock conditions.
PIAP
PIAP is a heavy-water industrial facility, not a fertilizer plant. Its reactivation illustrates the separate challenge of restoring specialized, energy-dependent industrial infrastructure.
Execution and procurement follow the asset and project stage
A useful supplier map begins with the buyer and the project status. Upstream operators, pipeline concessionaires, dedicated project companies, LNG developers, power generators and industrial users purchase through different systems.
Operator procurement
Drilling, completions, production equipment, maintenance, safety and field logistics are controlled by operators and their approved service chains.
Pipeline projects
Compression, valves, steel, control systems, civil works and O&M may be purchased through a concessionaire, project vehicle, EPC contractor or financing structure.
LNG development
Liquefaction, marine works, storage, shipping and commissioning form a separate procurement chain from upstream production and pipeline construction.
Industrial users
Power, petrochemicals, fertilizer and specialized plants buy around process reliability, feedstock conditions, maintenance and plant-specific compliance.
Supplier registration is not an order. Market access requires identifying the asset owner, operating company, project vehicle, EPC structure, project stage and technical qualification path.
Sources and status references
- Argentina Secretaría de Energía — Vaca Muerta: official resource positioning and formation overview.
- Resolution 66/2026: structural reconfiguration of the national gas-transport system and changed supply flows.
- Resolution 676/2026: RIGI approval for 14m m³/day of incremental Perito Moreno pipeline capacity.
- Resolution 873/2026: San Matías dedicated LNG-export pipeline design and RIGI approval.
- Argentina–Brazil bilateral gas report: route alternatives, infrastructure conditions and regional integration.
- Petrobras 2025 production update: total production, pre-salt output and 82-percent production share.
- Econosur company and infrastructure analysis for YPF, Vista Energy, Pampa Energía, Pluspetrol, Petrobras, PIAP, Añelo and regional export corridors.
Frequently asked questions about South American oil and gas
Why does oil and gas still matter in South America?
Oil and gas shape electricity costs, industrial feedstock, transport, fiscal revenue, export capacity and infrastructure investment. Their market value depends on the systems connecting production with domestic users and external buyers.
How is Vaca Muerta changing Argentina’s gas system?
Vaca Muerta is shifting supply toward the Neuquén Basin while Northwest Basin output and Bolivian imports have declined. Argentina is therefore reallocating pipeline capacity, modifying historical flow directions and building new domestic and export routes.
What is the Gasoducto Perito Francisco Pascasio Moreno?
It is the current official name of the trunk pipeline originally inaugurated as the Gasoducto Presidente Néstor Kirchner. Its first section links Tratayén and Salliqueló, and a 2026 RIGI project is designed to add 14 million cubic metres per day of capacity.
What is the San Matías LNG pipeline project?
The approved RIGI project is a planned dedicated 480-kilometre, 36-inch pipeline from Tratayén to San Antonio Oeste with design capacity of 27 million cubic metres per day for future liquefaction and LNG exports. Approval is not construction completion or LNG production.
Can Argentina already export large LNG volumes?
No. Argentina has concrete pipeline, liquefaction and export-development projects, but planned capacity, RIGI approval and investment announcements must be separated from completed construction, commissioning and commercial LNG exports.
Which routes could carry Argentine gas to Brazil?
The 2026 bilateral technical work examined alternatives through Bolivia, Paraguay, Uruguay and a direct connection. Each option still depends on transport expansion, commercial agreements, regulation and private investment.
How do YPF, Vista Energy, Pampa Energía and Pluspetrol differ?
YPF is the broad national platform linking upstream, pipelines, refining and LNG development. Vista Energy is a focused shale-oil growth operator. Pampa Energía connects gas production with electricity and petrochemicals. Pluspetrol brings a wider upstream and regional operating portfolio.
How does Brazil differ from Argentina?
Brazil is an operating offshore and pre-salt market built around deepwater production, FPSOs and industrial scale. Argentina is an onshore unconventional and infrastructure-expansion market in which pipelines, LNG, regional corridors and domestic industrial demand determine how Vaca Muerta is monetized.
Oil and gas analysis beyond reserve headlines
Econosur connects operators, pipeline systems, LNG projects, industrial demand, regulatory status and regional export routes. Reports and custom analysis distinguish operating assets from expansion projects, approvals and long-term plans.
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