Marval O’Farrell Mairal is frequently sought after for counsel on transformative energy developments, including Argentina’s first floating LNG facility, the expansion of natural gas processing plants, and cross-border infrastructure projects involving the reversal of gas pipeline flows. The practice is also active in upstream transactions, such as the sale of mature oil and gas fields, and regularly advises on offshore projects, from seismic surveying to the installation of production platforms in the South Atlantic. The team’s advice spans all regulatory, contractual, tax, permitting, and environmental issues across the life cycle of its clients’ projects. Oil and gas practice head Francisco Macías leads on major LNG infrastructure projects, while of counsel Arturo Pera is an industry veteran who brings decades of experience to the ‘responsive and engaged’ team. Soledad Riera is highly experienced across upstream, midstream, and downstream regulatory frameworks, while Agustina Ranieri focuses her practice on corporate and M&A and commercial arbitrations within the oil and gas sector.
Legal 500 Editorial commentary
Accolades
Client satisfaction
Testimonials
Collated independently by Legal 500 research team.
‘The firm is full-service, so they always have someone in their firm who can assist. They are very responsive and engaged. Our points of contact all have very good levels of English.'
'Marval is top-notch in Argentina and knows the energy sector in and out. They are a sophisticated firm with the resources, responsiveness and thoughtfulness you'd expect from a firm that is on the top of their market. They provide sound commercial advice.'
'Agustina Ranieri continues to be a reference and resource for us in the country in matters involving energy.'
'Agustina Ranieri's responsiveness, speed and availability make her a dependable, business-oriented lawyer.'
'Lawyers with in-depth knowledge and experience in oil and gas matters.'
'Arturo Pera is one of the lawyers with the greatest knowledge of both national and provincial hydrocarbon legislation and a long professional career in companies in the sector.'
Key clients
- Compañía Mega (joint venture between YPF, Petrobras and Dow)
- Compañía General de Combustibles (CGC)
- Engie (formerly GDF Suez)
- TotalEnergies (which includes Total Austral)
- Petrobras
- Transportadora de Gas del Sur (TGS)
- Noble Corporation
- C3Plus
- TGS / Spectrum
- Tecpetrol
- Air Drilling Associates (ADA)
- Weatherford
Work highlights
Advising YPF and Petronas on Argentina's largest LNG project and the largest infrastructure project in the Argentine oil and gas sector since YPF’s privatisation, valued at $300bn.
Advising YPF in connection with Project Andes, which consists of the sale of 55 mature production blocks located in five provinces.
Advising Golar LNG on a $6bn project, involving regulatory, tax, customs, corporate and foreign exchange analysis.
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.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
Francisco Macías
Other key lawyers
Arturo Pera; Soledad Riera; Agustina Ranieri