Lista include companiile Alon (Statele Unite), Conoco Philips (Marea Britanie), Eni (Italia), Gazprom (Rusia), Glencore (Elveţia), Hellenic Petroleum (Grecia), MOL (Ungaria), Occidental Oil and Gas Holding Corporation (Statele Unite), OMV (Austria), PKN Orlen (Polonia) şi TNK-BP (Statele Unite).
Listede Alon (ABD), Conoco Philips (İngiltere), Eni (İtalya), Gazprom (Rusya), Glencore (İsviçre), Hellenic Petroleum (Yunanistan), MOL (Macaristan), Occidental Oil and Gas Holding Corporation (ABD), OMV (Austria), PKN Orlen (Polonya) ve TNK-BP (ABD) yer alıyor.