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Halliburton said Friday, October 2, that it and its subsidiaries will not perform work on the Sea Lion offshore oil project near the Falkland Islands, and do not participate in hydrocarbon exploration or production in or around the islands. The oilfield-services company said it had been in contact with Argentine federal authorities, who raised questions about enforcement of current and proposed laws and rules governing companies’ right to contract.
The statement clarifies Halliburton’s position as Argentina intensifies legal and regulatory pressure over oil development in waters around the British-controlled archipelago, which Argentina calls the Malvinas. Halliburton’s announcement does not describe a project contract being terminated; instead, it says the company will not conduct work there. The project’s developers, Israel’s Navitas Petroleum and Britain’s Rockhopper Exploration, have said they intend to proceed despite Argentina’s objections.
Halliburton’s statement follows Argentine authorities’ questions
In its October 2 update, Halliburton said Argentine federal authorities had raised questions concerning criminal and civil enforcement of existing legislation, pending criminal and civil legislation, and right-to-contract certification regulations. It did not specify what communications took place, identify any particular legislation or say that it had been engaged to provide services to Sea Lion.
The wording is significant because it distinguishes the company’s decision from a withdrawal of an existing project role. Halliburton said it “will not conduct any work” on Sea Lion and does not participate in exploration or production in the area. The company’s notice characterized the update as relating to its Argentina operations.
Halliburton had already indicated in September that it was not participating in Sea Lion, according to contemporaneous Argentine reporting. The October statement gives a more explicit company confirmation after Argentine authorities contacted it about potential involvement and legal exposure.
Sea Lion remains a major offshore development
Sea Lion is located about 220 kilometers, or 140 miles, north of the Falkland Islands in the South Atlantic. Navitas’ project information lists the field as under development and identifies the company as operator, with a 65% working interest; Rockhopper is its partner. The companies’ project is separate from Halliburton’s announced position as an oilfield-services provider.
The partners have said they expect commercial production to begin in 2028. The development has drawn attention both for its potential economic importance to the islands and because Argentina contests the licensing and sovereignty context in which it is advancing. Halliburton’s statement does not say whether its absence will change the project schedule, costs or the operators’ plans to secure other suppliers.
Argentina has escalated its legal and political response
President Javier Milei has made the oil project a focus of Argentina’s renewed campaign to assert sovereignty over the Falklands. In late September, he said Argentina would pursue international legal action against the United Kingdom if work on Sea Lion did not stop. Argentina has also pursued proposed measures to penalize companies involved in oil activities around the islands.
A separate legal challenge has already produced an Argentine federal judge’s order seeking to halt Sea Lion development pending an environmental review. The Associated Press reported that the judge’s order targeted drilling, offshore installations and port construction, while acknowledging that enforcement depended on international cooperation and the conduct of the companies. That dispute is distinct from Halliburton’s announcement, which concerns the services company’s own participation.
Britain administers the islands and rejects Argentina’s sovereignty claim. Argentina maintains that the islands and surrounding natural resources belong to it. The competing claims have made Sea Lion’s development a source of diplomatic friction in addition to a commercial project involving offshore infrastructure and oilfield services.
Operators’ timetable and the project’s impact remain open questions
Navitas and Rockhopper have previously maintained that they would continue with Sea Lion despite Argentine threats, and reported that developments would not materially affect their schedule. Halliburton’s confirmation removes it as a potential source of services, but the public statement does not identify which work packages might be affected or whether the operators had planned to use the company.
Nor did Halliburton announce a financial impact, provide an estimate of any foregone revenue, or describe a change to its broader Argentina business. The company’s statement says it does not participate in hydrocarbon exploration or production around the islands; it does not quantify the scale or nature of its operations elsewhere in Argentina.
The next developments to watch are the Argentine legal and regulatory steps, any response from the Sea Lion partners, and whether the companies maintain their stated production timetable. Neither Halliburton’s notice nor the reporting available Friday established that the project had been suspended or that its 2028 target had changed.
