The Tengizchevroil partnership was formed on April 6, 1993, between the Republic of Kazakhstan and Chevron.
Tengiz is located on the 2.500 square kilometer (1.600 square mile) project license area which includes the super giant Tengiz field, and a smaller but sizable Korolev field and several exploratory prospects.
3.2 billion tonnes
(25.5 billion barrels)
200 million tonnes
(1.6 billion barrels)
Total recoverable crude oil in the Tengiz and Korolev fields is estimated to be 890 million to 1.37 billion metric tonnes (7.1 to 10.9 billion barrels).
Tengiz field is one of the world's deepest developed super giant oil fields, with the top of the reservoir at about 4.000 meters (13.000 feet). Tengiz reservoir is 19 kilometers (12 miles) wide by 21 kilometers (13 miles) long. The oil column measures an incredible one mile thick.