Yuganskneftegaz (Russian: Юганскнефтегаз) is a wholly integrated subsidiary of Rosneft that owns and operates the second largest oil production complex in Russia.
Yuganskneftegaz was formerly owned by Yukos, which was broken up and its principal assets sold off to satisfy tax debts allegedly totaling $28 billion.
The winning, and sole, bidder, was a little-known Russian oil company called Baikal Finance Group, who paid $9.7 billion.
The de facto nationalization of Yuganskneftegaz was denounced by Andrei Illarionov,[3] then a senior Putin economic advisor, as "the scam of the year.
According to the annual audit by DeGolyer and MacNaughton, as of 31 December 2006, Yuganskneftegaz' two largest fields, Priobskoye and Prirazlomnoye, contained 33% and 10.7% of Rosneft’s total proved reserves, respectively.