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World's biggest oil and gas companies
ExxonMobil
M arket cap: $406.3 billion
Ranking (2010) : 1
Share price change : 16 per cent
Country : The United States
PetroChina
M arket cap: $276.6 billion
Ranking (2010) : 2
Share price change : -9 per cent
Country : China
Royal Dutch Shell
M arket cap: $234.6 billion
Ranking (2010) : 4
Share price change : 10 per cent
Country : Netherlands
Chevron
M arket cap: $211.9 billion
Ranking (2010) : 3
Share price change : 17 per cent
Country : The United States
Petrobras
M arket cap: $156.3 billion
Ranking (2010) : 3
Share price change : -33 per cent
Country : Brazil
BP
M arket cap: $135.5 billion
Ranking (2010) : 7
Share price change : -2 per cent
Country : The United Kingdom
Gazprom
M arket cap: $122.6 billion
Ranking (2010) : 6
Share price change : -19 per cent
Country : Russia
TOTAL
M arket cap: $121.0 billion
Ranking (2010) : 8
Share price change : -3 per cent
Country : France
Sinopec
M arket cap: $97.4 billion
Ranking (2010) : 11
Share price change : -7 per cent
Country : China
ConocoPhillips
M arket cap: $96.8 billion
Ranking (2010) : 12
Share price change : 7 per cent
Country : The United States
Schlumberger
M arket cap: $91.7 billion
Ranking (2010) : 9
Share price change : -18 per cent
Country : The United States
Ecopetrol
M arket cap: $88.0 billion
Ranking (2010) : 13
Share price change : 1 per cent
Country : Colombia
Eni
M arket cap: $83.1 billion
Ranking (2010) : 14
Share price change : -4 per cent
Country : Italy
Statoil
M arket cap: $81.9 billion
Ranking (2010) : 19
Share price change : 9 per cent
Country : Norway
CNOOC
M arket cap: $78.1 billion
Ranking (2010): 10
Share price change : -26 per cent
Country : China
BG
M arket cap: $72.5 billion
Ranking (2010) : 20
Share price change : 6 per cent
Country : The United Kingdom
GDF Suez
M arket cap: $61.7 billion
Ranking (2010) : 15
Share price change : -24 per cent
Country : France
Suncor
M arket cap: $45.5 billion
Ranking (2010) : 23
Share price change : -25 per cent
Country : Canada