Related by context. Frequent words. (Click for all words.) 74 Occidental Petroleum Corp. 61 Exxon Mobil 59 Occidental 59 ConocoPhillips 58 Exxon Mobil Corp. 58 Chevron 57 Exxon Mobil Corp 56 Chevron Corp. 56 ChevronTexaco 55 Anadarko Petroleum 55 ExxonMobil 54 ConocoPhillips COP 52 Pioneer Natural Resources 51 ChevronTexaco Corp. 51 Anadarko Petroleum Corp. 51 Exxon 51 Repsol YPF 50 Exxon Mobil XOM 50 EnCana Corp. 50 Royal Dutch Shell 49 CVX 49 Conoco Phillips 49 Repsol 49 Talisman Energy 48 Diamond Offshore Drilling 48 EnCana 48 XTO Energy 48 Conoco 48 Kerr McGee 48 Marathon Oil 47 Newmont Mining 47 Schlumberger 47 Chesapeake Energy 47 XTO 47 Nexen 47 Ecopetrol 47 Anadarko 46 Suncor Energy 46 oilfield 46 Statoil 46 Talisman Energy Inc. 45 Statoil ASA 45 Petro Canada 45 Halliburton 45 Barrick Gold 45 Venoco 45 XOM 45 National Oilwell Varco 44 Schlumberger Ltd. 44 oil 44 BP PLC BP 44 Petrobras 44 StatoilHydro 44 Shell Oil 43 Sempra Energy 43 Valero Energy 43 BP Plc 43 Mariner Energy 43 Encana 43 Halliburton Co. 43 Oxy 43 Unocal 42 NYSE COP 42 Transocean 42 Saudi Aramco 42 BG Group 42 driller 42 Cnooc 42 Ultra Petroleum 42 oilfields 42 Freeport McMoRan 41 CNPC 41 Plains Exploration 41 refinery 41 Suncor Energy Inc. 41 XTO Energy Inc. 41 PDVSA 41 oil sands 41 Suncor 41 Valero 41 Sonatrach 41 Sinopec 41 Eni SpA 41 Oil 40 Eni 40 Petroleum 40 Tesoro 40 Petroecuador 40 Husky Energy 40 Newmont Mining Corp. 40 Range Resources 40 BP 40 Lukoil 40 Shell 40 PetroChina 39 ONGC 39 Helmerich & 39 Petroleo Brasileiro SA 39 Methanex 39 CNOOC 39 Fluor