Key figures
- 50,000 b/dplanned phase-one capacity of the Sea Lion field.Baird Maritime
- 27executives and directors identified in Argentina's expanded criminal complaints.La Voz de San Justo
- Q1 2028first oil target for Sea Lion, according to Rockhopper.The Rio Times
What is the Sea Lion project?
Sea Lion is an oil field about 220 km north of the Falkland Islands, in production licences PL032 and PL004b [2]. Israel's Navitas Petroleum operates it with a 65% stake through its UK subsidiary, and Britain's Rockhopper Exploration, which discovered the field in 2010, holds 35% [1,4]. The partners took a final investment decision on the northern development, with 11 subsea wells tied back to a redeployed floating production vessel and a second phase of 12 wells about three years after first oil [2]. Phase one is planned at 50,000 barrels a day [1].
Rockhopper chief executive Samuel Moody said first oil "remains targeted for Q1 2028" [4]. Rockhopper's share holds 110 million barrels of proven and probable reserves, according to Netherland, Sewell & Associates, and the company raised US$200 million in August, which it says funds it to mid-2028 [4].
What has Argentina done?
Argentina, which claims sovereignty over the islands it calls the Malvinas, has moved against the companies. On 3 September President Javier Milei said he would sanction oil companies drilling around the islands and send Congress a bill raising penalties, with sanctions extending to shareholders, directors and suppliers [2]. Foreign Minister Pablo Quirno filed a criminal complaint against Navitas subsidiaries and partners [1].
On 10 September the government expanded the complaints and identified 27 executives and directors linked to Navitas, Eco (Atlantic) Oil & Gas and Borders & Southern; Rockhopper entities were among the companies named [3]. The filings say that being named is not an automatic charge [3]. Earlier administrative proceedings covered 60 people and companies [3]. A federal judge in Río Grande ordered the companies to halt the project in mid-September, an order The Rio Times notes has no force in the islands, and Argentina said it would seek emergency measures at the UN sea tribunal in Hamburg [4].
How have the UK and the companies responded?
The UK and Falkland Islands governments called Argentina's measures "illegitimate and without legal justification" [4]. Downing Street said the islands will remain a British Overseas Territory "for as long as the Islanders wish" [2]. The companies say the project holds valid licences from the Falkland Islands government and do not expect a material impact on the timetable [1,4].
What to watch
- The sovereignty-defence bill in Argentina's Congress and how it treats suppliers and lenders [2].
- The UN sea tribunal. Whether Argentina files for emergency measures [4].
- Drilling. The first-phase wells are due to start early in 2027 [4].
Alupetra reports on upstream projects neutrally and takes no position on territorial disputes.
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Sources
- Baird Maritime (Reuters) — Navitas Petroleum faces charges as Argentina asserts Falklands claim (8 September 2026). bairdmaritime.com (opens in a new tab)
- Offshore Technology — Sea Lion: Argentine sanctions and Falklands oil (4 September 2026). offshore-technology.com (opens in a new tab)
- La Voz de San Justo (Infobae) — Malvinas: el Gobierno amplió las denuncias e identificó a 27 empresarios y directivos vinculados con las petroleras (10 September 2026). lavozdesanjusto.com.ar (opens in a new tab)
- The Rio Times — Falklands oil firm defies Argentina sanctions (30 September 2026). riotimesonline.com (opens in a new tab)
This article is for information only and is not investment, legal or trading advice. Figures are as reported by the sources cited on the date of publication.
