UK-based Shell (RDSA) owns a 27.5% stake in Sakhalin-2, which it describes as one of the world's largest integrated oil and gas projects. Shell says Sakhalin-2 supplies about 4% of the world's current liquified natural gas market.ExxonMobil (XOM)has been in Russia for over 25 years, and employs about 1,000 people there.Its subsidiary, Exxon Neftegas Limited, has a 30% stake in Sakhalin-1 — a vast oil and natural gas project located off Sakhalin Island in the Russian Far East. It has operated the project since 1995 on behalf of a consortium that includes Japanese and Indian partners, as well as two affiliates of Rosneft.

In addition to its stake in Rosneft, BP had three joint ventures with Russia's biggest oil company — a 20% stake in the Taas-Yuryakh oil project in eastern Siberia, 49% of Yermak Neftegaz in Western Siberia and 49% in the Kharampur oil and gas project.