Galkynysh Gas Field

The Galkynysh Gas Field, formerly known as Iolotan gas field or South Yolotan – Osman field, is a large natural gas field near Ýolöten in Mary Province of Turkmenistan. It is the world's second-largest gas field.

History
The discovery of the gas field was announced on 2 November 2006. Late Turkmen president Saparmurat Niyazov invited Chinese CNPC and Turkish Çalik Enerji to participate in the exploration and development of the Ýolöten field. In 2008, the gas field was audited by Gaffney, Cline & Associates. According to Gaffney, Cline and Associates (GCA), Galkynysh is five times larger than the Dauletabad gas field and fourth- or fifth-largest gas field in the world.

In December 2009, the contracts to develop the field were awarded to CNPC, Hyundai Engineering and Petrofac.

In November 2011, the field was renamed as Galkynysh. Production started in September 2013.

Description
The gas field ranks among the world's five largest with estimated reserves of between 4 and 14 e12m3 of natural gas and proven commercial reserves of 2.8 e12m3. It lies on 2700 km2 zone of 90 km in length and 30 km in width in the depth of 3900 to 5100 m. Galkynysh consist of Iolotan, Minara, Osman and Yashlar fields. Other nearby gas areas are Gunorta Garakel, Garakel, Giurgiu, Gazanly, Gundogar Eloten and Gunbatar Yandakly.

Oil reserves are 300 million tons. The crude oil extracted at Galkynysh is transported to the Seýdi Oil Refinery.

Development
The field is developed by Türkmengaz. CNPC, Hyundai Engineering and Petrofac built gas processing plants.