Azerbaijan International Operating Company (AIOC) produces and develops offshore crude oil reserves in the Caspian Sea from the Azeri-Chirag-Gunashli (ACG) field which Chevron holds an 11.3 per cent interest. The field has been developed in phases. Original total production was 125,000 barrels per day in 1997. In 2010, the AIOC's total daily crude oil production averaged 822,000 barrels.