Related by context. Frequent words. (Click for all words.) 87 Cnooc 78 CNOOC Ltd. 74 PetroChina 73 CNPC 72 Sinopec 65 Unocal 63 PetroKazakhstan 62 Offshore Oil 61 Sinochem 60 Tullow 60 PetroChina Co. 59 KNOC 59 Rosneft 58 BHP 57 Petrobras 57 Minmetals 57 Sinosteel 56 Chinalco 56 Statoil 56 Eni 56 BHP Billiton 55 Petronas 55 BG Group 55 ConocoPhillips 54 OVL 54 Shenhua 54 Cairn India 54 Chalco 53 Tullow Oil 53 ONGC 53 StatoilHydro 53 Lukoil 53 CITIC 53 Chevron 52 ChevronTexaco 52 PetroVietnam 52 Exxon Mobil 52 Royal Dutch Shell 52 Geely 52 deepwater 52 Baosteel 52 Exxon 52 Cairn 52 oil 52 Ping An 51 Temasek 51 Inpex 51 PCCW 51 Sonangol 51 Galp 51 LUKoil 51 Repsol YPF 51 Husky Energy 51 ExxonMobil 51 PetroSA 50 Gazprom Neft 50 Gazprom 50 Chevron Corp. 50 LUKOIL 50 China Unicom 50 Cairn Energy 50 Saudi Aramco 50 Aramco 50 BP Plc 50 shale gas 50 Repsol 50 Tengzhong 50 Conoco 49 Huawei 49 Kashagan 49 Ecopetrol 49 Addax Petroleum 49 TNK BP 49 Norsk Hydro 49 BHP Billiton Ltd 49 liquefied natural gas 49 Petrohawk 49 Pertamina 49 LNG 49 China Netcom 48 DP World 48 Talisman Energy Inc. 48 Citic 48 Sonatrach 48 Woodside Petroleum 48 oilfields 48 oil sands 48 Sino Gold 48 Natural Gas Corp 48 Anadarko Petroleum 48 BP 48 Kosmos 48 Anadarko 47 Timor Sea 47 Rio Tinto 47 onshore 47 Huawei Technologies 47 Encana 47 coal seam gas 47 Exxon Mobil Corp 47 Qatar Petroleum