Northgas was founded in 1993 to develop the North-Urengoy field. The company was controlled by Gazprom through its subsidiary Urengoygazprom, which owned a 51% stake in Northgas.[2] 44% of the company was owned by Bechtel Energy, while Tansley, an offshore company owned by the Russian businessman Farkhad Akhmedov had a stake of 5%.