Verkhnechonsk field

The Verkhnechonskoye field is a giant oil field in Eastern Siberia, Russia. The field is located in Kataganskiy district, Irkutsk Oblast, about 1100 km north-east from Irkutsk. It is considered the largest oil field in Eastern Siberia.

The field was discovered in 1978 and development started in 2002. Pilot operation of the field was started in 2005 and on 15 October 2008, first oil produced at the Verkhnechonskoye field was delivered. As of 2007, total proved reserves of Verkhnechonskoye were 409 Moilbbl of oil equivalent, and proved, possible and probable (3P) reserves amounted to 1.886 Goilbbl. Natural gas reserves are 95.5 billion cubic meters. In 2009, the field produced through 41 oil wells 1.181 million tons of oil, equal to 23500 oilbbl/d. The field is operated by Verkhnechonskneftegaz, a joint venture of TNK-BP (68.51%), Rosneft (25.94%), and East Siberian Gas Co. (5.48%).

Produced oil is shipped by an 85 km pipeline to Surgutneftegaz' Talakan field where it supplied to the Eastern Siberia – Pacific Ocean oil pipeline.