Atyrau, known as Guryev until 1991, is the capital of Atyrau Region. It is located at the mouth of the Ural River on the Caspian Sea, 2,700 kilometres (1,700 miles) west of Almaty and 351 kilometres (218 miles) east of the Russian city of Astrakhan. Modern Atyrau is famous for its oil and fish industries. It has 154,100 inhabitants (2007), up from 142,500 (1999 census), 90% ethnic Kazakhs (up from 80%), the rest being mostly Russians and other ethnic groups such as Tatars and Ukrainians.
The wooden fort at the mouth of the Yaik River was founded in 1645 as Nizhny Yaitzky gorodok (literally, Lower Yaik Fort) by the Russian trader Gury Nazarov, a native of Yaroslavl, who specialized in trade with Khiva and Bukhara. The fort was plundered by the Yaik Cossacks, leading the Guriev family to rebuild it in stone (1647–62). Tsar Alexis sent a garrison of Streltsy to protect the fort from Cossack incursions. Despite these efforts, the Cossack rebel Stepan Razin held the town in 1667 and 1668. The fort gradually lost its strategic significance and was demolished in 1810. Between 1708 and 1992 the city was known as Guriev. The Kazakh name At?raw means ‘river delta‘.
The third biggest refinery in Kazakhstan is located in Atyrau. Atyrau Refinery is operated by KazMunayGas and has a capacity of 16,600 m³/day (2012). A deep oil refining complex is under construction which is the final stage of complete reconstruction of Atyrau Oil Refinery. This project is designed to process 2.4 million tons/year of raw materials (oil and vacuum gas oil). The project will increase the depth of the oil processing at the refinery by 2016 to 85%. The volume of oil refining will reach 5.5 million tons per year. Atyrau is located near Tengiz field, which is operated in part by Chevron. Most families of Chevron employees live in Dostyk village, a compound that includes housing, recreational facilities, and an international school. Atyrau also has expatriate populations working for Agip, ExxonMobil, Royal Dutch Shell, and ConocoPhillips.