YUKOS
- Proven oil reserves: 14.71 billion barrels
- Proven gas reserves: 9.94 trillion cu ft
- Total oil production (2003): 591 million barrels
- Total gas production (2003): 199.7 billion cu ft
YUGANSKNEFTEGAS/ROSNEFT
- Proven reserves (oil equivalent): 11.63 billion barrels
- First began operations in 1964; has produced over 10 billion barrels till date. Manages 26 fields including Priobskoye and Prirazlomnoye
PRIOBSKOYE
- Recoverable reserves: 3.01 billion barrels
- Average daily production (2003): 0.35 million barrels
- Investments (2003): $452 million
