United States Oil - proved reserves

Oil - proved reserves: 21.76 billion bbl (1 January 2006 est.)

Year	Oil - proved reserves	Rank	Percent Change	Date of Information
2003	22,450,000,000	12		January 2002 est.
2004	22,450,000,000	11	0.00 %	1 January 2002
2005	22,450,000,000	14	0.00 %	1 January 2002
2006	22,450,000,000	14	0.00 %	1 January 2002
2007	22,450,000,000	13	0.00 %	1 January 2002
2008	21,760,000,000	11	-3.07 %	1 January 2006 est.

Definition: This entry is the stock of proved reserves of crude oil in barrels (bbl). Proved reserves are those quantities of petroleum which, by analysis of geological and engineering data, can be estimated with a high degree of confidence to be commercially recoverable from a given date forward, from known reservoirs and under current economic conditions.

Source: CIA World Factbook - Unless otherwise noted, information in this page is accurate as of May 16, 2008

See Also

Oil - proved reserves rank chart
Oil - proved reserves - comparative map