Related by context. Frequent words. (Click for all words.) 59 ERHC 57 VAALCO 56 Vangold 55 Petrohawk 54 Harvest Natural Resources 53 InterOil 53 TXCO 52 Ultra Petroleum 52 Gran Tierra Energy 51 Production Sharing Contract 51 EXCO Resources Inc. 51 Geokinetics 51 McMoRan 51 Allis Chalmers Energy 50 Range Resources 50 Roc Oil 50 Carrizo Oil & 49 Magnum Hunter 49 Kosmos Energy 49 Goodrich Petroleum 49 Addax Petroleum 49 GMXR 49 Hercules Offshore 49 CNOOC Limited 49 farmout 48 operatorship 48 Energy XXI 48 Oilexco 48 McMoRan Exploration Co. 48 Tullow 48 StatoilHydro 48 Gastar 48 Crosstex Energy 48 Oilsands Quest 48 Occidental Petroleum Corporation 48 Petrominerales 47 Niko Resources 47 EXCO 47 CNOOC 47 TAG Oil 47 Fugro 47 Afren 47 Statoil 46 Ivanhoe Energy 46 Haynesville shale 46 EOG 46 CNOOC Ltd. 46 Unicorp 46 Comstock Resources 46 Dejour 46 Highpine 45 CGGVeritas 45 Gulfsands 45 Cnooc 45 Syntroleum 45 Serica 45 Seadrill 45 DNO 45 CNOOC Ltd 45 XTO Energy Inc. 45 Maersk Oil 45 Verenex 45 Quicksilver Resources 45 Amerada Hess 45 Tullow Oil 45 Cabot Oil 45 Ecopetrol 45 Golar 45 3D seismic survey 45 Rosetta Resources 45 Ensco 44 3D seismic 44 Pioneer Natural Resources 44 Duvernay 44 PTTEP 44 Cimarex 44 Petrolifera 44 Cal Dive 44 Marathon Oil 44 Diamond Offshore 44 Dana Petroleum 44 Perenco 44 Lundin Petroleum 44 Uranium Resources 44 EOG Resources 44 Genoil 44 NYSE MRO 44 Rockhopper 44 National Oilwell Varco 44 appraisal wells 44 Offshore Oil 43 BG Group 43 Bois d' Arc 43 Desire Petroleum 43 CNX Gas 43 Anadarko Petroleum 43 XTO Energy 43 Anadarko 43 CNPC 43 OML 43 ENGlobal