PETROLEUM UNION EXPORT is a Russia-based integrated oil and gas company. The Company is engaged in the business of oil exploration, production, refining, marketing and distribution. The Company's exploration and production activity is located in Russia, and its main resource base is in Western Siberia. It owns modern refineries, gas processing and petrochemical plants located in Russia, Eastern and Western Europe. The Company's petroleum products are sold in Russia, Eastern and Western Europe and United States. The Company operates in four business segments: exploration and production, refining, marketing and distribution, and chemicals and other business.