Adnoc
Adnoc
http://www.adnoc.ae
BP
BP
http://www.bp.com
Chevron
Chevron
http://www.chevron.com
Conoco Philip
Conoco Philip
http://www.conocophillips.com/Pages/default.aspx
Corporate
Corporate
http://corporate.exxonmobil.com/en/
ENI
ENI
http://www.eni.com/en_IT/home.page
Enoc
Enoc
http://www.enoc.com/EN/Pages/default.aspx
Lukoil
Lukoil
http://www.lukoil.com
NAM
NAM
http://www.nam.nl
Nioc
Nioc
http://en.nioc.ir/Portal/Home/
Petrobas
Petrobas
http://www.petrobras.com.br/pt/
Petronas
Petronas
http://www.petronas.com.my/Pages/default.aspx
Q8
Q8
http://www.q8.com
Saudiramaco
Saudiramaco
http://www.saudiaramco.com/en/home.html
Shell
Shell
http://www.shell.com
Statoil
Statoil
http://www.statoil.com/en.html
Total
Total
http://www.total.com/en
Wikipedia
Wikipedia
http://en.wikipedia.org/wiki/List_of_oil_exploration_and_production_companies