Related by context. Frequent words. (Click for all words.) 57 Frontera Resources 55 Petrohawk Energy 55 Exco Resources 54 GMX Resources 54 Magnum Hunter Resources 54 Sonoran Energy 53 BPZ Energy 53 Cheniere Energy 53 Newfield Exploration Company 53 Newfield Exploration 53 Petrosearch 53 Monogram Energy 52 VAALCO Energy 52 Nova Biosource Fuels 52 wildcatter 51 Caza Oil & 51 OMDA Oil 51 McMoRan Exploration 51 Seahawk Drilling Inc. 51 Avro Energy 50 Cano Petroleum 50 TexCom 50 Contango Oil & 50 Antero Resources 50 GMXR 50 Concho Resources 50 Crimson Exploration 49 PetroSun 49 EXCO Resources 49 Cimarex Energy Co. 49 Energy XXI 49 Comstock Resources 48 Blugrass Energy Inc. 48 Royale Energy 48 Petrohawk Energy Corp. 48 Denbury Resources 48 Vanguard Natural Resources 48 Chesapeake Appalachia 48 Harvest Natural Resources 48 driller 48 Permian basin 48 Surmont 48 GeoResources 48 Nitro Petroleum 48 Particle Drilling Technologies 47 Chesapeake Energy 47 GeoResources Inc. 47 LINN Energy 47 Petsec 47 Newfield Exploration Co. 47 Approach Resources 47 Barnett Shale 47 EOG Resources 47 ERHC Energy Inc. 47 EnerGulf 47 Spindletop 47 Cavnar 47 Tanganyika Oil 47 GeoPetro 47 landman 47 Rosetta Resources 46 Hercules Offshore 46 BPZ Resources Inc. 46 Uranerz Energy 46 Concho Resources Inc. 46 PetroQuest 46 Trican Well Service 46 Vetco Gray 46 Venoco 46 Energen Resources 46 Petrohawk Energy Corporation 46 Parallel Petroleum 46 Provides Operational Update 46 Brigham Exploration 46 Austral Pacific Energy 46 Moncrief 46 Crosstex Energy 46 Presco 46 Magnum Hunter 46 Niobrara Shale 45 Frac 45 Bankers Petroleum 45 Cenovus Energy 45 Arkoma Basin 45 Fayetteville shale 45 NGAS Resources 45 Woodford Shale 45 BPZ 45 Nextraction 45 Petromin 45 Petrohawk 45 Permian Basin 45 Denbury Resources Inc. 45 Helix Energy 45 PetroFalcon 45 Unconventional Gas 45 Copano Energy LLC 45 Enterra Energy 45 CAMAC Energy 45 MSEV 45 GMX Resources Inc.