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 Jorma Ollila, Chairman of the Board of Directors of Royal Dutch Shell signed in the presence of Putin and Mark Rutte prime minister of Netherlands a memorandum outlining the principles of cooperation within hydrocarbons exploration and development in the Arctic shelf and a section of the deep-water shelf. In 2008, Gazprom carried out of explorative well drilling; of 2D seismic and of 3D seismic survey. As a result, gas reserves grew by , and crude oil and gas condensate reserves grew by 61 million tons. Gazprom carries out prospecting and exploration in foreign countries such as India, Algeria, Venezuela, Vietnam,