The Sakhalin-1 Consortium was formed in 1996 is the first major shelf project in Russia created under terms of a Product Sharing Agreement (PSA). The international consortium is made up of the US major ExxonMobil (30 percent), Japan's Sodeco (30 percent), Russia’s Rosneft (20 percent) and India's ONGC Videsh (20 percent).
The total cost of the project is estimated to be $10-12 billion, making it the largest direct foreign investment in Russia .... http://rt.com