Oil - proved reserves: 523.2 million bbl (1 January 2012 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 December 6, 2013See Also
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