US oil major ConocoPhillips is trying to take over Venezuelan counterpart PDVSA's assets in the Caribbean as part of a nationalisation row.
Reuters cited sources familiar with the matter as saying the company wants to enforce a $2bn arbitration award arising from PDVSA nationalising its assets in Venezuela.
ConocoPhillips is targeting export refineries on the islands of Curacao, Bonaire and St Eustatius.