The company identified the two blocks as shallow-water fields near the coast of Nigeria's Bayelsa state, which sits in the country's oil-rich Niger Delta. The company did not disclose what the estimated oil and gas reserves were for the fields, which include the Anyala, Ato North and Madu plays.
Chevron described the sell-off as part of its Nigerian subsidiary's "continuous process of portfolio evaluation and business prioritization." The company offered no other details.
Chevron has a 40 per cent interest in the stakes up for auction, with the state-run Nigerian National Petroleum Corp. holding the majority 60 per cent. The Nigerian government would have to approve any potential sell-off.
The sites Chevron wants to sell off are near the offshore field where Chevron had a gas rig explode in January 2012, killing two workers.
For years, Nigerian lawmakers have been debating passing the Petroleum Industry Bill, a sweeping overhaul of how Africa's most populous nation deals with oil revenues and foreign firms. Analysts say the bill, if passed, would sharply reduce the profits of foreign companies like Chevron, ExxonMobil Corp, Eni SpA, Royal Dutch Shell PLC and Total SA.