OGX bankruptcy: What now for Batista's Brazil projects?
31 October 2013 Last updated at 14:16 GMT
OGX, the Brazilian oil and gas company controlled by the billionaire Eike Batista, has filed for bankruptcy protection in a Rio de Janeiro court.
The move came after OGX said long-running talks with creditors to restructure some of its $5.1bn (£3.2bn) debt failed on Tuesday.
The BBC's Wyre Davies looks at where it leaves some of Mr Batista's big projects.