Marcelo Galvani

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According to the World Factbook, published by the CIA, and before confirmation by Petrobras of reserves from 5 to 8 billion barrels found in the Tupi field, the world's largest proven reserves of oil were:
Rank Country Oil - proved reserves (bbl)
1 World 1,312,000,000,000
2 Saudi Arabia 264,200,000,000
3 Canada 178,800,000,000
4 Iran 138,400,000,000
5 Iraq 112,500,000,000
6 Kuwait 101,500,000,000
7 Arab Emirates 97,800,000,000
8 Venezuela 78,770,000,000
9 Russia 74,400,000,000
10 Libya 41,460,000,000
11 Nigeria 36,250,000,000
12 United States 21,370,000,000
13 China 16,300,000,000
14 Qatar 15,200,000,000
15 Algeria 14,560,000,000
16 Mexico 12,510,000,000
17 Brazil 12,220,000,000
18 Kazakhstan 9,000,000,000
19 Norway 8,500,000,000
20 Azerbaijan 7,000,000,000
21 European Union 6,933,000,000
According to an article published in UOL, the president of Petrobras said that the reserves [...]