Related by context. Frequent words. (Click for all words.) 87 CNOOC 76 CNOOC Ltd. 71 PetroChina 67 Sinopec 66 CNPC 64 PetroChina Co. 59 Offshore Oil 58 BHP 57 Unocal 57 PetroKazakhstan 56 BHP Billiton 56 KNOC 56 ConocoPhillips 56 Sinochem 56 Tullow 55 Chalco 55 Petrobras 55 Chevron Corp. 55 Inpex 54 Minmetals 54 Exxon Mobil 53 Chevron 53 Rosneft 53 Sinosteel 53 Chinalco 53 Shenhua 53 Tullow Oil 52 Eni 52 OVL 52 BP Plc 52 ChevronTexaco 52 Royal Dutch Shell 51 BG Group 51 Exxon 51 CITIC 51 Ecopetrol 50 Lukoil 50 ONGC 50 Woodside Petroleum 50 Petroleo Brasileiro SA 50 Galp 50 Cairn India 50 Ping An 50 BHP Billiton Ltd 50 Statoil 49 Conoco 49 Cairn Energy 49 Rio Tinto 49 Sino Gold 49 BHP Billiton Ltd. 49 Exxon Mobil Corp 49 TNK BP 49 LUKoil 48 Repsol 48 Temasek 48 Petronas 48 Cairn 48 Exxon Mobil Corp. 48 Citic 48 Nexen 48 oil 48 ExxonMobil 47 Geely 47 Potash Corp. 47 Anadarko Petroleum 47 Repsol YPF 47 Gazprom Neft 47 oil sands 47 Anadarko 47 Sonangol 47 Addax Petroleum 47 Gazprom 47 Aramco 47 Rio Tinto Ltd 47 Ivanhoe Energy 47 PetroSA 47 deepwater 46 StatoilHydro 46 China Unicom 46 Husky Energy 46 AngloGold 46 Billiton 46 PCCW 46 Encana 46 miner Rio Tinto 46 shale gas 46 Natural Gas Corp 46 China Netcom 46 oilfields 46 Tengzhong 46 BP 45 PetroVietnam 45 refiners 45 Oxiana 45 Baidu.com 45 Baosteel 45 Petrohawk 45 Nippon Oil 45 HSBC Holdings 45 Alibaba 45 Kashagan