Kashagan oil field is one of the largest oil fields in the world that were discovered over the last 40 years and the largest offshore oil field at sea. Kashagan is an integrated hydro carbonate platform with geological reserves being estimated at 6.4 billion tons (51 billion barrels) and occupies territory about 820 km2. Kashagan field has significant reserves of natural gas (over 1 trillion m3)
Field is located 80 km to the South-West of Atyrau city in shallow waters of North Caspian Sea. The field was discovered on the 30th of June, 2000 in 150-years anniversary of 19th century Kazakh poet from Mangystau, Kashagan Kurzhimanuly, and named after him.