Related by context. Frequent words. (Click for all words.) 70 CNOOC Ltd 66 CNOOC 62 CNOOC Ltd. 61 Cnooc 61 PetroChina 60 Sinopec 59 Petrohawk 58 CNPC 56 Pansoft 55 Sinopec Corp 55 Bohai Bay 54 PetroChina Co 54 Petrochina 54 Shenhua Group 53 SouthGobi 52 Roc Oil 52 Offshore Oil 52 VAALCO 52 Ivanhoe Energy 52 PetroKazakhstan 52 Unocal 51 Energy XXI 51 PetroVietnam 51 Rosetta Resources 51 Pan Orient 51 Primeline 51 Serica 51 PTTEP 51 Ecopetrol 51 Ultra Petroleum 51 Harbin Electric 50 Addax Petroleum 50 China XD Plastics 50 CITIC 50 Yanzhou Coal Mining 50 Petrovietnam 50 ONGC Videsh 50 Puda Coal 50 Corporation CNPC 50 McMoRan 50 Magnum Hunter 50 GMXR 50 LUKOIL 49 CNinsure 49 Sinovac 49 Hercules Offshore 49 Rosneft 49 Gulfsands 49 Sino Gold 49 PetroChina Co. 49 Hyperdynamics 49 PXP 49 Gazprom Neft 49 BPZ 49 StatoilHydro 49 Tullow 49 PETRONAS 49 BG Group 49 Occidental Petroleum Corporation 49 TAG Oil 49 TAQA 49 Petrominerales 49 Statoil 49 China BAK 49 Highpine 49 Lundin Petroleum 48 ERHC 48 Harvest Natural Resources 48 CNX Gas 48 Afren 48 TPAO 48 Maersk Oil 48 Haynesville shale 48 EOG 48 JA Solar 48 Pacific Rubiales 48 Shenhua 48 Gran Tierra Energy 48 Yanzhou Coal 48 EXCO 48 Bankers Petroleum 48 Qiao Xing Mobile 48 Gastar 48 VanceInfo 48 DVN 47 KNOC 47 HKEx 47 Denbury 47 TNK BP 47 InterOil 47 Cimarex 47 China Yuchai 47 NetDragon 47 Minsheng Bank 47 Woodford Shale 47 KazMunaiGas 47 Encana 47 Production Sharing Contract 47 Total SA TOT 46 PrimeWest 46 operatorship