Ivanhoe Energy Inc. says it is bankrupt after restructuring talks with creditors proved unsuccessful.
The company had been working with Ernst & Young to reach a viable restructuring proposal and had already extended the deadline for filing a proposal by a month.
The Vancouver-based heavy oil company has projects in Ecuador and Mongolia and was working to develop a proprietary upgrading process for heavy oil.
The Toronto Stock Exchange and the Nasdaq delisted the company's shares in February.
Ivanhoe Energy is one of several companies backed by Robert Friedland, a mining promoter who has played key roles in developing the Voisey's Bay nickel deposit in Labrador and the Oyu Tolgoi copper and gold deposit in Mongolia.