Related by context. Frequent words. (Click for all words.) 64 PETROBRAS 63 Sonangol 61 Elf Petroleum 61 Nigeria Sao Tome 60 Sudapet 60 Hocol 59 Albpetrol 59 Enap 59 Galp Energia 58 Petropars 58 Ecopetrol 58 Petroleo 57 Lda 57 Endiama 57 Enarsa 56 Venezuela PDVSA 56 Cygam 56 Vietsovpetro 56 Tullow Oil plc 55 Ecopetrol SA 55 KUFPEC 55 Algeria Sonatrach 55 Tengizchevroil 55 ENI SpA 55 Elnusa 55 Sonatrach 55 Brazil Petrobras 55 Petrobas 55 Stroytransgaz 55 Turcas 55 Production Sharing Agreement 55 Uzbekneftegaz 55 Eni SpA E 55 Angola 55 ERHC Energy 55 Lundin Petroleum AB 54 Leni Gas 54 Petronas Carigali 54 GAZPROM 54 Lunda Sul 54 Perupetro 54 OML# 54 SacOil 54 Exxonmobil 54 Candax 54 BOTAS 54 Energo 54 Azeri Chirag Gunashli 54 EnerGulf 53 Petroleos Mexicanos Pemex 53 POGC 53 Ultrapar 53 Kazmunaigaz 53 Sincor 53 Zarubezhneft 53 KazMunayGas 53 CEPSA 53 Qatar Petroleum QP 53 Nido Petroleum 53 ENAP 53 Putumayo Basin 53 co venturers 53 Austrian OMV 53 Petroliam Nasional Bhd 53 PetroEcuador 53 Argentine Repsol YPF 53 Transportadora de Gas 53 Hellenic Petroleum 53 Azeri Chirag Guneshli 53 Pluspetrol 53 PanOcean 53 Dutch Shell 53 Rocksource 52 Petrovietnam 52 Mariscal Sucre 52 Det norske 52 Vanoil 52 Esso Exploration 52 OMEL 52 Petoro 52 JDZ 52 Kouilou 52 France Total TOTF.PA 52 Stratic Energy 52 Pequiven 52 Quifa 52 GeoPark 52 Eni 52 Tullow Oil PLC 52 Andes Petroleum 52 Gabon 52 TotalFinaElf 52 Zafiro 52 BrazAlta 52 Americas Petrogas 52 Meta Petroleum 52 Norway Norsk Hydro 51 Italy Agip 51 Medco Energi 51 Petroperu 51 SA PDVSA