Related by context. Frequent words. (Click for all words.) 61 PetroQuest 59 GeoResources Inc. 57 Brigham Exploration 56 NGAS 55 TXCO 55 Royale Energy 55 Magnum Hunter 55 Petrohawk 54 Woodford Shale 54 Cimarex 53 Harvest Natural Resources 53 MarkWest Energy Partners 53 Explor 53 Parallel Petroleum 53 Cimarex Energy 53 Petrohawk Energy Corporation 52 Gastar 52 MarkWest 52 Whiting Petroleum 52 Quest Resource 52 Vanguard Natural Resources 52 Bronco Drilling 52 EVEP 52 OGE Energy 51 Newfield Exploration 51 ProspEx 51 Rosetta Resources 51 Haynesville shale 51 GMXR 51 Legacy Reserves 51 DCP Midstream Partners LP 51 Whiting Petroleum Corporation 51 Dejour 50 Petroflow 50 Peyto Energy 50 BPZ Energy 50 Rodinia 50 Cimarex Energy Co. 50 McMoRan 50 EXCO Resources Inc. 50 TexCom 50 Copano Energy 50 Arkoma Basin 50 Energen Resources 50 Atlas Pipeline 49 Bois d' Arc 49 Enogex 49 Energy XXI 49 Cheniere Energy 49 MegaWest 49 Gran Tierra 49 Approach Resources 49 Gasco Energy 49 Canetic 48 MMLP 48 NuStar GP Holdings 48 Denbury 48 GreenHunter Energy 48 Comstock Resources 48 Allis Chalmers Energy 48 Pan Orient 48 Appalachian Basin 48 BreitBurn 48 NYSE RRC 48 BPZ 48 Enerplus 48 Piceance 48 Canacol 48 Cherokee Basin 47 PetroSun 47 Concho Resources Inc. 47 Williston Basin 47 Enterra Energy 47 MarkWest Energy Partners LP 47 PetroBakken 47 Magellan Petroleum 47 ONEOK Partners 47 Sunoco Logistics 47 Petrobank 47 Twin Butte 47 Quicksilver Resources 47 CNX Gas 47 Enerplus Resources Fund 47 Brigham Exploration Company 47 Spectra Energy Partners 47 EnQuest 47 Coal Bed Methane 47 Lexam 46 Granite Wash 46 MDU Resources 46 Anadarko Basin 46 Cal Dive 46 SandRidge 46 BOE d 46 Comaplex 46 Martin Midstream Partners 46 Fairborne 46 Exploration 46 Oilsands Quest 46 Vangold 46 USOG