Gazprom Neft attempted a merger with Yukos that would have created Russia's largest oil company, YukosSibneft. The first attempt in 1998 failed over a management dispute, while second time round Sibneft's shareholders called off the deal in November 2003 after the federal government cracked down on Yukos despite the process already being well under way. In September 2005, Gazprom bought 75.7% of Sibneft's shares from Millhouse Capital (Roman Abramovich’s investment vehicle) for US$13.1 billion in Russia's largest corporate takeover. In May 2006, Sibneft was renamed Gazprom Neft. In 2006 Alexander Dyukov was elected as CEO of the company and in 2008 he
Gazprom Promgaz for gas supply of South Ossetia and Armenia. Gazprom Promgaz plans gas transportation and its distribution systems, as well as investigating various research in the field of natural gas. The company is the general planner of the natural gas supply program for Russian regions, developed by Gazprom. The company is also a research center of Gazprom in the field of regional power systems, the supply, distribution and use of gas, efficient energy use and energy-savings, price setting for construction of gas industry objectives, the development of regional hydrocarbon fields and development of non-traditional hydrocarbon resources including coal bed methane. Gazprom