Related by context. Frequent words. (Click for all words.) 63 Frontera Resources 61 VAALCO Energy 60 Lundin Petroleum AB 59 Kosmos Energy 59 CanArgo 58 Production Sharing Agreement 58 Uzbekneftegaz 58 Petropars 58 TGS NOPEC Geophysical 58 OMEL 58 Andes Petroleum 57 ONGC Videsh Ltd. 57 KazMunayGas 57 OAO Lukoil 57 BPZ Energy 57 Tengizchevroil 56 EnerGulf 56 LukOil 56 Zarubezhneft 56 Eni SpA E 56 Sonoran Energy 56 Manas Petroleum 56 Esso Exploration 56 Tanganyika Oil 55 RussNeft 55 Cygam 55 Algeria Sonatrach 55 Socar 55 Tullow Oil Plc 55 ONGC Mittal Energy 55 BNK Petroleum Inc. 55 Hyperdynamics 55 Udmurtneft 55 Tullow Oil plc 55 NOVATEK 54 Americas Petrogas 54 Kulczyk Oil 54 Medco Energi 54 Petrobas 54 France Total TOTF.PA 54 KMG EP 54 Lukoil 53 PT Medco Energi 53 PetroFalcon 53 Bridas 53 ONGC Mittal 53 Leni Gas 53 KazMunaiGas 53 ENI SpA 53 Serica Energy 53 Rocksource 53 Petronas Carigali 53 Sentry Petroleum 53 Romgaz 52 LUKOIL 52 Brazil Petrobras 52 Artumas 52 Enarsa 52 Norway StatoilHydro 52 PanOcean 52 Puntland Somalia 52 Newfield Exploration Company 52 Candax 52 farmout agreement 52 Kharyaga 52 Sonangol 52 ERHC Energy Inc. 52 Norway Statoil 52 co venturers 52 GeoResources Inc. 52 ONGC Videsh Limited 52 EuroGas 52 Harvest Natural Resources 52 Coalbed Methane 52 2D seismic survey 52 Akkulka 51 Aminex 51 Pluspetrol 51 Ecometals 51 NYSE OXY 51 Norway Norsk Hydro 51 Lundin Petroleum 51 CUCBM 51 exploration 51 Gasprom 51 Farmout 51 RAK Petroleum 51 CAMAC Energy 51 GeoPetro 51 BrazAlta 51 Statoil 51 TPAO 51 Occidental Petroleum Corporation 51 Russia OAO Gazprom 51 Inter RAO UES 51 Det norske 51 Hungary MOL 51 Thailand PTT Exploration 51 Vanco 51 Transmeridian 51 LUKoil