Related by context. Frequent words. (Click for all words.) 72 XTO 66 XTO Energy Inc. 62 Chesapeake Energy 57 Petrohawk 55 Barnett Shale 55 Quicksilver Resources 54 National Oilwell Varco 54 EOG Resources 53 Anadarko Petroleum 53 EOG 53 Magnum Hunter 52 Anadarko Petroleum Corp. 52 Ultra Petroleum 52 SandRidge 52 Kerr McGee 51 EnCana 51 Plains Exploration 51 Denbury 51 Schlumberger 50 ConocoPhillips 50 Encana 50 Pioneer Natural Resources 49 Range Resources 49 Kinder Morgan 49 Haynesville 49 Venoco 49 Anadarko 48 CNX Gas 48 Cabot Oil 48 Occidental Petroleum 48 Western Refining 47 Exxon Mobil 47 Williston Basin 47 Grey Wolf 47 ConocoPhillips COP 47 Energen 46 TXU 46 Unocal 46 Marathon Oil 46 Exxon Mobil XOM 46 Haynesville Shale 46 Dejour 45 Pengrowth 45 driller 45 Oil Sands 45 Exxon Mobil Corp. 45 Chevron CVX 45 Occidental Petroleum Corp. 45 InterOil 45 EXCO 44 Conoco 44 Piceance Basin 44 Permian Basin 44 Exxon 44 Talisman Energy Inc. 44 Exxon Mobil Corp 44 Diamond Offshore Drilling 44 Fayetteville Shale 44 Enerplus 43 Boone Pickens 43 Spectra Energy 43 Dynegy 43 XOM 43 drillers 43 ONEOK 43 Chevron Corp. 42 McMoRan 42 Chevron 42 Ford Shale 42 ChevronTexaco 42 NRG Energy 42 Mariner Energy 42 Contango 41 Weatherford 41 GlobalSantaFe 41 NYSE COP 41 Calpine 41 PXP 41 Marcellus shale 41 CVX 41 Centex 41 CHK 41 Alpha Natural Resources 41 Gold Kist 41 Conoco Phillips 41 EnCana Corp. 41 TXU Corp. 41 Schlumberger Ltd. 41 Dominion Resources 41 ONEOK Partners 41 Gastar 41 Cullen Frost 40 Marcellus Shale 40 Anadarko Petroleum Corporation 40 Archstone Smith 40 Unocal Corp. 40 oilfield 40 ExxonMobil 40 natural gas 40 BG Group 40 Ensco