Oil: Proved reserves at end 1990 at end 2000 at end 2009 at end 2010
Thousand Thousand Thousand Thousand Thousand
million million million million million Share R/P
barrels barrels barrels tonnes barrels of total ratio
 
US 33.8 30.4 30.9 3.7 30.9 2.2% 11.3
Canada 11.2 18.3 32.1 5.0 32.1 2.3% 26.3
Mexico 51.3 20.2 11.7 1.6 11.4 0.8% 10.6
Total North America 96.3 68.9 74.6 10.3 74.3 5.4% 14.8
 
Argentina 1.6 3.0 2.5 0.3 2.5 0.2% 10.6
Brazil 4.5 8.5 12.9 2.0 14.2 1.0% 18.3
Colombia 2.0 2.0 1.4 0.3 1.9 0.1% 6.5
Ecuador 1.4 4.6 6.3 0.9 6.2 0.4% 34.1
Peru 0.8 0.9 1.1 0.2 1.2 0.1% 21.6
Trinidad & Tobago 0.6 0.9 0.8 0.1 0.8 0.1% 15.6
Venezuela 60.1 76.8 211.2 30.4 211.2 15.3% *
Other S. & Cent. America 0.6 1.3 1.4 0.2 1.4 0.1% 28.9
Total S. & Cent. America 71.5 97.9 237.6 34.3 239.4 17.3% 93.9
 
Azerbaijan n/a 1.2 7.0 1.0 7.0 0.5% 18.5
Denmark 0.6 1.1 0.9 0.1 0.9 0.1% 9.9
Italy 0.8 0.9 1.0 0.1 1.0 0.1% 25.0
Kazakhstan n/a 25.0 39.8 5.5 39.8 2.9% 62.1
Norway 8.6 11.4 7.1 0.8 6.7 0.5% 8.5
Romania 1.5 1.2 0.5 0.1 0.5 w 14.8
Russian Federation n/a 59.0 76.7 10.6 77.4 5.6% 20.6
Turkmenistan n/a 0.5 0.6 0.1 0.6 w 7.6
United Kingdom 4.0 4.7 2.8 0.4 2.8 0.2% 5.8
Uzbekistan n/a 0.6 0.6 0.1 0.6 w 18.7
Other Europe & Eurasia 65.3 2.3 2.3 0.3 2.4 0.2% 17.5
Total Europe & Eurasia 80.8 107.9 139.2 19.0 139.7 10.1% 21.7
 
Iran 92.9 99.5 137.0 18.8 137.0 9.9% 88.4
Iraq 100.0 112.5 115.0 15.5 115.0 8.3% *
Kuwait 97.0 96.5 101.5 14.0 101.5 7.3% *
Oman 4.4 5.8 5.5 0.7 5.5 0.4% 17.4
Qatar 3.0 16.9 25.9 2.7 25.9 1.9% 45.2
Saudi Arabia 260.3 262.8 264.6 36.3 264.5 19.1% 72.4
Syria 1.9 2.3 2.5 0.3 2.5 0.2% 17.8
United Arab Emirates 98.1 97.8 97.8 13.0 97.8 7.1% 94.1
Yemen 2.0 2.4 2.7 0.3 2.7 0.2% 27.7
Other Middle East 0.1 0.2 0.1 ^ 0.1 w 9.3
Total Middle East 659.6 696.7 752.6 101.8 752.5 54.4% 81.9
 
Algeria 9.2 11.3 12.2 1.5 12.2 0.9% 18.5
Angola 1.6 6.0 13.5 1.8 13.5 1.0% 20.0
Chad - 0.9 1.5 0.2 1.5 0.1% 33.7
Rep. of Congo (Brazzaville) 0.8 1.7 1.9 0.3 1.9 0.1% 18.2
Egypt 3.5 3.6 4.4 0.6 4.5 0.3% 16.7
Equatorial Guinea - 0.8 1.7 0.2 1.7 0.1% 17.1
Gabon 0.9 2.4 3.7 0.5 3.7 0.3% 41.2
Libya 22.8 36.0 46.4 6.0 46.4 3.4% 76.7
Nigeria 17.1 29.0 37.2 5.0 37.2 2.7% 42.4
Sudan 0.3 0.6 6.7 0.9 6.7 0.5% 37.8
Tunisia 1.7 0.4 0.4 0.1 0.4 w 14.6
Other Africa 0.9 0.7 0.7 0.2 2.3 0.2% 44.2
Total Africa 58.7 93.4 130.3 17.4 132.1 9.5% 35.8
 
Australia 3.2 4.9 4.1 0.4 4.1 0.3% 19.9
Brunei 1.1 1.2 1.1 0.1 1.1 0.1% 17.5
China 16.0 15.2 14.8 2.0 14.8 1.1% 9.9
India 5.6 5.3 5.8 1.2 9.0 0.7% 30.0
Indonesia 5.4 5.1 4.3 0.6 4.2 0.3% 11.8
Malaysia 3.6 4.5 5.8 0.8 5.8 0.4% 22.2
Thailand 0.3 0.5 0.4 0.1 0.4 w 3.6
Vietnam 0.2 2.0 4.5 0.6 4.4 0.3% 32.6
Other Asia Pacific 1.0 1.3 1.3 0.2 1.3 0.1% 11.3
Total Asia Pacific 36.3 40.1 42.2 6.0 45.2 3.3% 14.8
 
Total World 1003.2 1104.9 1376.6 188.8 1383.2 100.0% 46.2
of which: OECD 115.4 93.3 92.0 12.4 91.4 6.6% 13.5
                 OPEC 763.4 849.7 1068.6 146.0 1068.4 77.2% 85.3
                 Non-OPEC £ 176.5 168.2 182.6 25.5 188.7 13.6% 15.1
                 European Union # 8.1 8.8 6.2 0.8 6.3 0.5% 8.8
                 Former Soviet Union 63.3 87.1 125.4 17.3 126.1 9.1% 25.6
Canadian oil sands— n/a 163.3 143.1 23.3 143.1    
Proved reserves and oil sands n/a 1268.2 1519.6 212.0 1526.3    
* More than 100 years.
 ^ Less than 0.05.
w Less than 0.05%.
£ Excludes Former Soviet Union.
# Excludes Lithuania and Slovenia in 1990.
—'Remaining established reserves' less reserves 'under active development'.
Notes: Proved reserves of oil - Generally taken to be those quantities that geological and engineering information indicates with reasonable certainty can
be recovered in the future from known reservoirs under existing economic and operating conditions.
Reserves-to-production (R/P) ratio - If the reserves remaining at the end of any year are divided by the production in that year, the result is the length of time
that those remaining reserves would last if production were to continue at that rate.
Source of data - The estimates in this table have been compiled using a combination of primary official sources, third-party data from the OPEC Secretariat, Oil &
Gas Journal and an independent estimate of Russian reserves based on information in the public domain. Canadian proved reserves include an official
estimate of 26.5 billion barrels for oil sands ‘under active development’. Venezuelan reserves are taken from the OPEC Annual Statistical Bulletin,
that noted in 2008 that the figure included "proven reserves of the Magna Reserve Project in the Orinoco Belt, which amounted to 94,168mb"
Reserves include gas condensate and natural gas liquids (NGLs) as well as crude oil.
Annual changes and shares of total are calculated using thousand million barrels figures.