Companii internationale petroliere prezente in Romania in explorare si productie ExxonMobil (USA) Chevron (USA) Total (France) Lukoil (Russia) Gazprom (Russia) Hunt Oil (USA) MOL (Hungary) Blackstairs Energy (Ireland) Moesia Oil and Gas (Ireland) Audax Resources (Australia) Clara Petroleum (UK) Translantic Petroleum (UK) East West Petroleum Corp (Canada) Midia Resources (Canada) Winstar (Canada) Petro Ventures Europe (Netherlands) Stratum Energy Romania (USA) Companii internationale de servicii petroliere prezente in Romania care furnizeaza servicii pentru Petrom Weatherford (USA) Cameron (USA) Tenaris (Luxemburg) Schlumberger (USA) Halliburton (USA) Baker Hughes (USA) Lufkin Industries (USA) Petrofac (UK) Petrosantander Kremsmuller (Austria) Christof Group (Austria) Kraftanlagen (Germany) J.C.R. Industries (US) Linde Gaz (Germany) Rohrer (USA) Streicher Group (Germany) CDI Oilfield Services (UK) Wabag Water Services (Austria) Scientific Drilling (USA) Ava Drilling Fluids and Services (Italy) Seko Sieta (Italy) Odjfell (Norway) Iot Dosco (Netherlands)