<Tr> <Td> </Td> <Td> This article needs to be updated . Please update this article to reflect recent events or newly available information . (November 2010) </Td> </Tr> <P> This list of oil fields includes some major oil fields of the past and present . </P> <P> The list is incomplete; there are more than 65,000 oil and gas fields of all sizes in the world . However, 94% of known oil is concentrated in fewer than 1500 giant and major fields . Most of the world's largest oilfields are located in the Middle East, but there are also supergiant (> 10 billion bbls) oilfields in Brazil, Mexico, Venezuela, Kazakhstan, and Russia . </P> <P> Amounts listed below, in billions of barrels, are the estimated ultimate recoverable petroleum resources (proved reserves plus cumulative production), given historical production and current extraction technology . Oil shale reserves (perhaps 3 trillion barrels (4.8 × 10 m)) and coal reserves, both of which can be converted to liquid petroleum, are not included in this chart . Other non-conventional liquid fuel sources are similarly excluded from this list . </P>

Where is most oil found in the world