Related by context. Frequent words. (Click for all words.) 59 Revus Energy 58 Petrobras Energia 57 Andes Petroleum 57 Lukoil Overseas 57 TSX PRE 57 StatoilHydro ASA STO 57 Petro Andina Resources 56 SBM Offshore NV 56 BPZ Resources 56 Hocol 56 AXYS Design Automation 55 Pebercan 55 TXCO Resources 55 Norway Norsk Hydro 55 Lundin Petroleum AB 55 Statoil ASA STO 55 Corriente Resources 54 Stratic Energy 54 Maurel et Prom 54 Stratic Energy Corporation 54 Quetzal Energy 54 PT Medco Energi 54 Petrozuata 53 Brazil Petrobras 53 Pertra 53 Veritas DGC Inc. 53 Meta Petroleum 53 Scailex Corporation 53 BVC ECOPETROL 53 Zhaikmunai 53 Pluspetrol 53 Enarsa 53 Ternium SA 53 Americas Petrogas 53 Otish Energy 53 Petroleo SA 53 Aker Solutions ASA 53 Vaalco Energy 52 Nexen Petroleum 52 AMEC plc 52 Petrosearch Energy 52 S2C Global Systems 52 Stolt Offshore 52 OAO LUKOIL 52 Ensco Offshore 52 Geekzone ® SohoSolutions 52 JM Huber Corporation 52 Enablence Technologies 52 Talisman Energy Inc 52 Spain Repsol YPF 52 Kazmunaigaz 52 Medco Energi 52 Eltek ASA 52 EGPC 52 Ecometals 52 Vaalco 52 Putumayo Basin 52 StrataLight Communications 52 PetroFalcon 52 Alberta Oilsands 52 NGEx 52 Bridas Corporation 52 Alange Energy 51 Hylsamex 51 Anadarko Petroleum Corp APC.N 51 ConocoPhillips COP.N 51 Eni SpA E 51 Transportadora de Gas 51 BPZ Energy 51 BrazAlta 51 Statoil ASA Norway 51 NOVATEK 51 4Gas 51 ONGC Videsh Ltd. 51 Candax 51 ION Geophysical 51 Perenco 51 CriticalControl 51 Vetco Gray 51 CNOOC #.HK 51 Ecopetrol SA EC 51 OAO Lukoil 51 Paranapanema 51 KMG EP 51 Enap 51 Veritas DGC 51 Acergy SA 51 PETROBRAS 51 Det norske 51 Udmurtneft 51 AuDAX 51 Petrodorado 51 RussNeft 51 OGX Petróleo e Gás 51 DataWave 51 Pacific Rubiales Energy 51 Rusoro Mining 51 Cadogan Petroleum 51 Telemar Norte Leste 50 Galp Energia SGPS SA 50 Turgai Petroleum