Russia 's biggest independent oil producer OAO Lukoil Holdings (LKOH.RS) said Thursday its proven reserves fell to 17.3 billion barrels of oil equivalent at the end of 2010.

Lukoil's proven reserves stood at 17.5 billion barrels of oil equivalent at the end of 2009.

Lukoil's proved reserves included 13.3 billion barrels of oil and 23.6 trillion cubic feet of gas, in accordance with the U.S. Securities and Exchange Commission standards.