Argentina’s Vaca Muerta Now Produces 70% of National Oil as LNG Pipeline Wins US$900 Million
ARGENTINA · ENERGY
Key Facts
—What happened: Southern Energy has secured close to US$900 million in bank financing for Argentina’s first dedicated LNG pipeline.
—How big: The San Matías Pipeline will run 478 kilometres from Vaca Muerta to the Río Negro coast and cost US$1.3 billion in total.
—The real story: Vaca Muerta shale now delivers around 70 percent of Argentina’s oil, and export hardware is finally catching up with the wells.
—The catch: The loan is structured but not yet formally closed, and the first LNG cargoes are only due in late 2027.
—Who is behind it: Pan American Energy, YPF, Pampa Energía, Harbour Energy and Golar LNG hold equal shares in Southern Energy.
—What comes next: Two liquefaction ships arrive in 2027 and 2028, targeting combined sales of 6 million tonnes of LNG per year.
Vaca Muerta now produces around 70 percent of Argentina’s oil, and the Southern Energy consortium has secured close to US$900 million to build the gas pipeline that will carry the shale boom to world markets as LNG.
A shale field that now carries Argentina’s oil output
Argentina produced 874,662 barrels of oil per day in January 2026, according to the national Energy Secretariat. Neuquén province, which sits on the formation, delivered 610,715 of them, almost 70 percent of the national total.
The pattern has held through the year. Shale wells in Vaca Muerta keep growing while the mature basins of Santa Cruz and Chubut decline, pushing the shale share past the 70 percent line.
Natural gas tells the same story. Argentina averaged 130.9 million cubic metres per day in January, and Neuquén supplied about 91.3 million of that, again close to 70 percent.
The state-controlled oil company YPF plans to invest US$6 billion in 2026, its largest programme in years. About 70 percent of that money is earmarked for Vaca Muerta.
YPF’s strategy chief Maia Goldin told Congress in July that the field now matches or beats the best US shale operations. Production standards and costs, she said, are equal to or better than those of large American producers.
The US$900 million loan behind the San Matías Pipeline
The new financing is a syndicated loan of close to US$900 million for the San Matías Pipeline. Citi, JP Morgan, Itaú and Santander structured the deal, with a banking group of ten to twelve institutions.
The credit is project finance, meaning repayment comes from the pipeline’s future revenues rather than the owners’ balance sheets. Total investment in the duct is estimated at US$1.3 billion, with the partners covering the difference as equity.
The pipeline will run 478 kilometres with a diameter of 36 inches. It connects Tratayén, the gas hub at the heart of Vaca Muerta, with the San Matías Gulf on the Río Negro coast.
Construction was awarded to the Víctor Contreras–SICIM joint venture, pairing an Argentine builder with an Italian pipeline specialist. A 46,000-horsepower compression plant in Río Negro completes the system.
Financial close is expected within days, according to Argentine press reports this week. The first steel pipes are already arriving, and welding is scheduled to begin in November.
Five partners, two ships and one German buyer
Southern Energy is owned in equal parts by Pan American Energy, YPF, Pampa Energía, Harbour Energy and Golar LNG. Its plan is to chill Vaca Muerta gas into liquid form offshore and sell it abroad.
LNG, or liquefied natural gas, is gas cooled to minus 162 degrees Celsius so it can travel by ship. Two floating liquefaction vessels will do the work, with a combined capacity of 6 million tonnes per year.
The first vessel, the Hilli Episeyo, arrives in 2027, and production is scheduled to start late that year. The second unit, known as MK II, follows in 2028.
The anchor customer is Securing Energy for Europe, or SEFE, the German state-owned energy company. It agreed to buy 2 million tonnes per year for eight years starting in late 2027.
Why one pipeline matters for the whole country
Argentina holds the world’s second-largest shale gas resource, yet it has never exported LNG at scale. The missing piece was never the geology but the hardware to move gas to the sea.
The export push is already visible in the numbers. Argentina’s energy trade balance posted a US$611 million surplus in June, and the 2026 balance has improved by US$2.2 billion over the same period last year, according to the IARAF fiscal institute.
On the oil side, the US$3 billion Vaca Muerta Oil Sur pipeline to Punta Colorada is more than 70 percent built. First crude exports from that Atlantic terminal are expected between late 2026 and early 2027.
Southern Energy also faces a rival scheme, Argentina LNG, backed by YPF, Italy’s Eni and Abu Dhabi’s XRG. That project targets start-up around 2031 and an investment of roughly US$25 billion.
For the government of President Javier Milei, every pipeline is a proof point. His deregulation drive and the RIGI investment incentive regime were designed to attract exactly this kind of private energy financing.
What to watch from here
The first test is financial close, because a structured loan is not a funded one until every bank signs. That signature round is expected in the coming days.
The second test is the construction calendar through the Argentine winter of 2027. Any slip pushes back first cargoes and delays the export dollars the treasury is counting on.
The third is the price of gas in Europe and Asia when the ships finally sail. The economics of the project rest on exports earning more than gas sold at home.
Frequently Asked Questions
What is the San Matías Pipeline?
It is a 478-kilometre gas pipeline from Tratayén in Neuquén to the San Matías Gulf in Río Negro, built to feed two floating LNG plants. Total investment is estimated at US$1.3 billion.
Who is financing the US$900 million loan?
Citi, JP Morgan, Itaú and Santander structured the syndicated credit, with ten to twelve banks in the group. Repayment comes from the project’s future revenues, not the owners’ balance sheets.
Who owns Southern Energy?
Pan American Energy, YPF, Pampa Energía, Harbour Energy and Golar LNG hold equal shares. The consortium plans to export LNG from late 2027.
How much of Argentina’s oil comes from Vaca Muerta?
Around 70 percent. In January 2026, Neuquén province produced 610,715 of Argentina’s 874,662 barrels per day, and the shale share has held near or above that level since.
When will Argentina export LNG again?
The first liquefaction vessel arrives in 2027, with production planned for late that year. A second vessel joins in 2028, taking combined capacity to 6 million tonnes per year.
Connected Coverage
We covered the road network feeding the field in Argentina’s Neuquen maps 750 kilometres of roads to take Vaca Muerta west to Chile, the gas-processing build-out in Argentina approves US$365 million RIGI project to expand Mega gas complex and new American capital in the play in Continental Resources joins a US$4 billion Argentina shale venture.
Sources: La Nación, Diario Río Negro, Comunicaciones Mineras, Secretaría de Energía de la Nación, IARAF.
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