Río Negro grants three unconventional hydrocarbon concessions to Tango Energy in eastern Vaca Muerta
Published · Updated
What happened
A provincial decree published as official on June 16 granted three unconventional concessions in Río Negro to Tango Energy Argentina, covering blocks linked to the eastern expansion of Vaca Muerta. The project includes a first pilot investment phase estimated at US$66 million, while Vista Energy keeps half of the shale production rights.
Why it matters
This is a binding upstream licensing and investment step rather than a generic exploration headline, signaling fresh capital deployment and a potential expansion of Argentina's shale frontier beyond its most developed core. It could affect drilling activity, takeaway infrastructure needs and future production growth in a basin already central to regional energy balances.
Río Negro formally approved three non-conventional hydrocarbon concessions for Tango Energy Argentina in Entre Lomas, Jarilla Quemada and Charco del Palenque, according to a decree made official on June 16. The measure opens a new eastward extension of Vaca Muerta and includes an initial pilot commitment of about US$66 million. Vista Energy retains 50% of shale output rights, making the development relevant for near-term upstream investment, infrastructure planning and federal-provincial energy coordination.
Watch for
Boletín Oficial de Río Negro publication of the full concession decree text and annexes on operational terms by 2026-06-20 Secretaría de Energía de la Nación acknowledgement or registry update reflecting the three Río Negro unconventional concessions by 2026-06-20 Tango Energy Argentina filing or company notice confirming the US$66 million pilot work program, including initial wells or capex schedule, by 2026-06-20 Vista Energy investor communication or regulatory filing specifying how its 50% shale output rights will be operationalized in the Río Negro blocks by 2026-06-20
Sources
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