Related by context. Frequent words. (Click for all words.) 72 XTO Energy 61 Chesapeake Energy 60 EnCana 59 Encana 58 Anadarko 58 EOG 57 Barnett Shale 57 Kerr McGee 57 ConocoPhillips 56 National Oilwell Varco 56 Anadarko Petroleum 54 Conoco 54 Exxon Mobil 52 Range Resources 52 Schlumberger 52 Kinder Morgan 52 Exxon 51 Pioneer Natural Resources 51 Nexen 51 Anadarko Petroleum Corp. 51 Plains Exploration 51 Alpha Natural Resources 50 drillers 50 Ensco 50 Oil Sands 50 Grey Wolf 50 Haynesville Shale 49 Exxon Mobil Corp. 49 EXCO 49 oil sands 49 Haynesville 49 Pengrowth 49 Cabot Oil 48 Exxon Mobil Corp 48 Fayetteville Shale 48 Suncor 48 Spectra Energy 47 ChevronTexaco 47 oilfield 47 shale gas 47 XOM 47 TXU 47 Tillerson 47 McMoRan 47 ExxonMobil 47 Occidental Petroleum 47 PXP 46 InterOil 46 ONEOK 46 Williston Basin 46 Chevron 46 Marcellus shale 46 EnCana Corp. 45 Marcellus Shale 45 Statoil 45 Petro Canada 45 Mariner Energy 45 coalbed methane 45 Permian Basin 45 CVX 45 Marathon Oil 45 Lyondell 44 PetroChina 44 shale 44 StatoilHydro 44 CNOOC 44 Talisman 44 Cnooc 44 driller 44 Dollar Thrifty 44 Prudhoe Bay 43 Transocean 43 Barrick 43 PetroKazakhstan 43 Unocal 43 Centex 43 TransCanada 43 Ecopetrol 43 Cairn India 43 Ivanhoe Energy 43 natural gas 43 Powder River Basin 42 Rosneft 42 Petrofac 42 Occidental Petroleum Corp. 42 Cairn 42 horizontal drilling 42 Marcellus 42 Questar 42 North Slope 42 CF Industries 42 SemGroup 42 Flowserve 42 Tullow 42 Chevron Corp. 42 Bcfe 42 Suncor Energy 42 Bakken 42 Conoco Phillips 42 oilsands 42 Norsk Hydro