
Pérez Alati, Grondona, Benites & Arntsen stands out for its work on important transactions, regulatory matters, and disputes within Argentina’s oil and gas industry. The practice conducts thorough due diligence in relation to the acquisition of concession rights, exploration permits, and stakes in midstream energy projects. The team also advises on the divestment of oil and gas assets and represents clients in local and international litigation and arbitration involving global energy players. Practice heads Francisco Romano and Alan Arntsen excel in negotiating cross-border corporate transactions, including M&A, joint ventures, and financing arrangements. They are joined by counsel Tomás Fernández Madero, who advises on corporate investment agreements within the oil and gas sector.
Legal 500 Editorial commentary
Key clients
- <p>Mercuria Energy Group (and affiliates and subsidiaries)</p>
- <p>Phoenix Global Resources (and affiliates and subsidiaries)</p>
- <p>Petrolera El Trébol</p>
- <p>Pampa Energía</p>
- <p>Dow Chemical</p>
- <p>Trafigura</p>
- <p>IFC</p>
- <p>YPF</p>
- <p>Wintershall Energía</p>
- <p>Equinor</p>
- <p>Shell</p>
- <p>Albanesi</p>
Work highlights
Advised YPF on the acquisition of Vaca Muerta assets for $300m.
Advised Neuss on the acquisition of YPF assets under the Andes Project and in the Province of Santa Cruz.
Advised Mercuria and Phoenix on the acquisition of a stake in the new midstream VMOS project (crude oil transportation from Vaca Muerta to the Rio Negro coast for exports).
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Practice head
Francisco Romano; Alan Arntsen
Other key lawyers
Tomás Fernández Madero
