BP operates the two largest oil and gas production projects in the Azerbaijan's sector of the Caspian Sea, the Azeri–Chirag–Guneshli offshore oil fields, which supplies 80% of the country's oil production, and the Shah Deniz gas field. It also and develops the Shafag-Asiman complex of offshore geological structures.[216][217][218] In addition, it operates the Azerbaijan's major export pipelines through Georgia such as Baku–Tbilisi–Ceyhan, Baku–Supsa and South Caucasus pipelines