10 Biggest Oil Companies in the World

No. 3: National Iranian Oil Company

National Iranian Oil Company

Production: 6.4 million barrels a day

Even though international sanctions have forced Iran to cut back on its production, the country still remains one of the biggest players in the oil and natural gas game. What is more, it has been reported that some countries, such as India and Turkey, pay for the oil in gold, so as to avoid the above-mentioned sanctions.