Related by context. Frequent words. (Click for all words.) 65 CNOOC 60 Chevron 57 ChevronTexaco 54 CNPC 54 Kerr McGee 53 PetroChina 52 Exxon Mobil 50 Chevron Corp. 49 Exxon 49 ExxonMobil 48 Conoco 48 Sinopec 47 ConocoPhillips 47 oil 47 Occidental 46 Offshore Oil 45 Grey Wolf 45 Encana 45 Rosneft 45 BHP 44 EnCana 44 Phelps Dodge 44 TNK BP 44 Royal Dutch Shell 43 OVL 43 XTO 43 Airgas 43 Shell 43 Kinder Morgan 42 Lukoil 42 oilfields 42 Sinochem 42 Exxon Mobil Corp. 42 natural gas 41 Agrium 41 BG Group 41 Petroleum 41 Aramco 41 Eni 41 Calpine 41 Talisman 41 crude oil 40 Dynegy 40 Chesapeake Energy 40 Inco 40 Petro Canada 40 BP 40 gas 40 Mirant 40 Placer Dome 40 Halliburton 40 LNG 40 Chinalco 40 Nexen 40 Tillerson 40 CF Industries 40 Gazprom 40 liquefied natural gas 40 Statoil 39 Dollar Thrifty 39 PXP 39 Tullow 39 Alibaba 39 BHP Billiton 39 3Par 39 Cairn India 39 Sempra 39 Alinta 39 3Com 39 Lyondell 39 TXU 39 Cairn 39 Anadarko 39 ONGC 39 Anadarko Petroleum Corp. 38 Calpers 38 Petronas 38 PotashCorp 38 Yuganskneftegaz 38 Tracinda 38 Marathon Oil 38 Potash Corp 38 Texaco 38 Woodside 38 MOL 38 petroleum 38 Newmont 37 Potash Corp. 37 Natural Gas 37 Vornado 37 Asarco 37 BP Plc 37 Knight Ridder 37 Cairn Energy 37 oilfield 37 TransCanada 37 Schlumberger 37 KKR 37 oil sands 37 coalbed methane 37 ANWR