Related by context. Frequent words. (Click for all words.) 55 Petrohawk 54 Ultra Petroleum 52 Crosstex Energy 51 TXCO 51 Chesapeake Energy 51 Rosetta Resources 51 CNX Gas 51 Cimarex 50 EOG 50 Denbury 50 MDU Resources Group 50 Oneok 50 Harvest Natural Resources 49 SandRidge 49 ONEOK 49 Energy XXI 49 Quicksilver Resources 49 EXCO Resources Inc. 48 ONEOK Partners 48 Magnum Hunter 48 Crosstex 47 XTO 47 AGL Resources 47 XTO Energy 47 TECO Energy 47 Dynegy 47 Pioneer Natural Resources 46 Atmos Energy 46 MarkWest 46 Carrizo Oil & 46 MDU Resources 46 Bois d' Arc 46 McMoRan 46 Syntroleum 45 Gastar 45 Allis Chalmers Energy 45 El Paso Pipeline 45 Dominion Resources 45 NOVA Chemicals 45 Exxon Mobil NYSE XOM 45 Marathon Oil 45 NiSource 45 TEPPCO 44 ProAssurance 44 Chevron NYSE CVX 44 EXCO 44 EOG Resources 44 CenterPoint Energy 44 Enerplus 44 Kerr McGee 44 SouthTrust 44 CONSOL 44 PowerSecure 44 Tcfe 44 Hercules Offshore 44 Denbury Resources Inc. 43 SandRidge Energy Inc. 43 Goodrich Petroleum 43 Fayetteville Shale 43 PXP 43 AltaGas 43 natural gas 43 Range Resources 43 Gran Tierra Energy 43 Cal Dive 43 Geokinetics 42 Products Partners LP 42 XTO Energy Inc. 42 Mirant 42 Amerada Hess 42 Calpine 42 Haynesville 42 Perficient 42 Barnett Shale 42 Cytec 42 Helix Energy 42 ChevronTexaco 42 PetroBakken 42 Rock Tenn 42 Torchmark 42 Venoco 42 eLoyalty 42 EnCana 42 Pengrowth 42 NYSE APC 42 AMERIGROUP 42 Transfer Partners LP 42 FMC Technologies 42 Baytex 42 Granite Wash 42 Protective Life 42 Baytex Energy Trust 42 Appalachian Basin 41 Cleco 41 Williston Basin 41 Flotek 41 Exxon Mobil 41 Agnico Eagle 41 Haynesville Shale 41 Entergy 41 SCANA