Berkut is the biggest oil and gas platform in the world, and is estimated that it's maximum oil extraction capacity is 4.5 million tonnes annually.
The Perdido oil and gas platform is the second biggest in the world. This platform extracts 100,000 barrels of oil and 200 million m3 of gas everyday.
The Petronius oil platform is situated in the Gulf of Mexico. It is 1869ft. high and weighs 41,000 tonnes. It extracts more than 60,000 barrels of oil everyday.
Lying at depths of more than 3500 m underwater, this was thought to contain over 3 billion barrels of petroleum. It produces over 1400 barrels of oil everyday.
This is the largest in the Gulf of Mexico, which extracts and processes more than 360,000 barrels of oil every day from underwater depths of 6500 m.