Related by context. Frequent words. (Click for all words.) 78 CNOOC 76 Cnooc 65 PetroChina Co. 64 PetroChina 63 Unocal Corp. 61 CNPC 60 PetroKazakhstan 60 Sinopec 58 Petrochina 58 Offshore Oil 56 Unocal 54 Yanzhou Coal Mining 53 Sinochem 52 Huaneng Power International 52 Addax Petroleum 52 Petroleo Brasileiro SA 51 Dana Petroleum 51 Woodside Petroleum Ltd. 51 Talisman Energy Inc. 51 Rosneft 50 Kosmos Energy 50 Aluminum Corp 50 Statoil ASA 50 Royal Dutch Shell 50 Natural Gas Corp 50 BP Plc 49 Bohai Bay 49 Chevron Corp. 49 KNOC 49 BG Group 48 Reliance Industries Ltd. 48 Cairn India 48 ONGC Videsh 48 Petrobras 48 Cairn Energy 48 ConocoPhillips COP 48 Chinalco 47 BP PLC BP 47 China Minmetals 47 Malaysia Petronas 47 OAO Gazprom 47 XTO Energy Inc. 47 China Shenhua Energy 47 Tullow Oil 47 Husky Energy 47 BP BP.L 47 Exxon Mobil Corp 47 Exxon Mobil 46 Exxon Mobil XOM 46 Zijin Mining 46 oil 46 Huaneng 46 BHP Billiton Ltd 46 Chevron NYSE CVX 46 ConocoPhillips 46 Sonangol 46 Repsol YPF SA 46 Anadarko Petroleum 46 Hyperdynamics 46 Petronas 46 Tullow 46 Inpex Corp. 45 BHP Billiton 45 OML 45 Eni 45 Afren 45 deepwater exploration 45 Chalco 45 Verenex 44 PetroSA 44 Petroleum Exploration 44 Minmetals 44 Sinosteel 44 Exxon Mobil Corp. 44 Chesapeake Energy 44 ChevronTexaco Corp. 44 Repsol YPF 44 BHP Billiton Ltd. 44 gas monopoly Gazprom 44 sovereign wealth fund 44 refiner 44 Jiangxi Copper 44 giant Gazprom 44 Niko Resources 44 Krishna Godavari basin 44 EOG Resources Inc. 44 Ultra Petroleum 44 Alibaba Group 44 Dubai Ports World 44 Ecopetrol 44 Energy XXI 44 Shenhua 44 TPAO 44 GNPC 44 Zijin 43 StatoilHydro 43 BHP Billiton BHP 43 deepwater 43 Eni SpA 43 ONGC 43 Norsk Hydro ASA