Related by context. Frequent words. (Click for all words.) 70 ERHC 64 EnerGulf 62 BPZ Energy 60 PanOcean 60 Harvest Natural Resources 60 Newfield Exploration Company 59 Hyperdynamics 58 Newfield Exploration 58 GeoResources Inc. 58 PetroQuest 58 JDZ 58 Manas Petroleum 58 CNOOC Limited 57 Oilex 57 Rosetta Resources 57 Approach Resources 57 TAG Oil 57 CanArgo 57 Energy XXI 56 Royale Energy 56 Crimson Exploration 56 VAALCO 56 Whiting Petroleum 56 Whiting Petroleum Corporation 56 Atwood Oceanics 56 OMEL 56 Canacol 55 CAMAC 55 BPZ 55 Stratic 55 Gran Tierra 55 Petrolifera 55 GMXR 55 WesternZagros 55 Afren 55 Gastar 54 Maersk Oil 54 Brigham Exploration 54 Pacific Rubiales 54 Continental Nickel 54 Magnum Hunter Resources 54 Gulfsands 54 Cimarex Energy 54 PetroSun 54 Petro Vista 54 Crosstex Energy 54 Cheniere Energy 54 Occidental Petroleum Corporation 54 ENSCO International 54 Ecopetrol 53 FOGL 53 operatorship 53 Legacy Reserves 53 Hercules Offshore 53 Cheniere Energy Inc. 53 McMoRan 53 Comstock Resources 53 Canoro 53 LINN Energy 53 RWE Dea 53 Xtreme Coil 53 Petrominerales 53 Quicksilver Resources 53 Roc Oil 53 Newfield Exploration Co. 53 QEP Resources 52 Trico Marine Services 52 Concho Resources Inc. 52 Aminex 52 Magnum Hunter 52 Magellan Petroleum 52 Oando 52 TPAO 52 GeoPetro 52 Abraxas Petroleum Corporation 52 Parallel Petroleum 52 Ecopetrol SA 52 Tullow Oil Plc 52 Vanguard Natural Resources 51 Romios 51 Petroceltic 51 Carrizo Oil & 51 Gran Tierra Energy 51 UPDA 51 Production Sharing Agreement 51 Unicorp 51 Lundin Petroleum 51 Targa Resources Partners LP 51 Hardman Resources 51 MagIndustries 51 Ultra Petroleum 51 Pacific Rubiales Energy 51 GobiMin 51 Nabors Industries Ltd. 51 CNOOC Ltd 51 StatoilHydro 51 Callon Petroleum Company 51 CNOOC 51 Petrohawk Energy Corporation 50 Monogram Energy 50 EnerJex