Related by context. Frequent words. (Click for all words.) 63 Addax 56 VAALCO 55 KNOC 54 Lundin Petroleum 54 Verenex 54 ERHC 54 Dana Petroleum 53 Talisman Energy Inc. 53 Afren 53 Pan Orient 53 DNO 52 CNOOC Ltd. 52 CNPC 52 Oilexco 51 Petrolifera 51 Tullow 51 Production Sharing Contract 51 UTS Energy 51 operatorship 51 Gulfsands 50 CNOOC Limited 50 Roc Oil 50 Total SA TOT 50 Talisman Energy 50 Niko Resources 50 CNOOC Ltd 50 Nexen 50 EnQuest 50 Statoil ASA 49 Hyperdynamics 49 Vangold 49 Pacific Rubiales 49 CNOOC 49 Tullow Oil 49 OVL 49 Perenco 49 PetroBakken 49 PetroKazakhstan 49 OML 48 farmout 48 ONGC Videsh 48 Duvernay 48 Eni 48 Ivanhoe Energy 48 TPAO 48 Talisman 48 StatoilHydro 48 Victory Nickel 48 Sonangol 48 Encana 47 Sinopec 47 Norsk Hydro ASA 47 Gran Tierra Energy 47 Wintershall 47 Petro Canada 47 Norway Statoil 47 Offshore Oil 47 Serica 47 Lundin Mining 47 Freewest 47 Maurel & 47 Cnooc 47 Enerplus 47 Kosmos Energy 46 Maersk Oil 46 LionOre 46 Malaysia Petronas 46 Falconbridge 46 Agnico Eagle 46 Cambior 46 Italy Eni 46 Bankers Petroleum 46 Chinguetti 46 Iamgold 46 Statoil 46 Canadian Royalties 46 Highpine 46 Cairn Energy Plc 46 Harvest Natural Resources 45 McMoRan 45 Italy ENI 45 Athabasca Oil 45 TAG Oil 45 Husky Energy 45 Ecopetrol 45 NovaGold 45 InterOil 45 Petrominerales 45 Jinchuan Group 44 Oilsands Quest 44 oilfield 44 Drillsearch 44 Cairn India 44 Cairn Energy 44 Cal Dive 44 Energy XXI 44 Royal Dutch Shell 44 Aurizon 44 EnCana 44 CAMEC 44 Petroleum Exploration