Gazprom Boris Yeltsin, the Russian President, appointed Chernomyrdin, Gazprom's Chairman, his Prime Minister, the company's political influence increased. Rem Viakhirev took the chairmanship of Gazprom's Board of Directors and Managing Committee. Following the Decree of the President of the Russian Federation of 5 November 1992 and the Resolution of the Government of Russia of 17 February 1993, Gazprom became a joint-stock company. Gazprom began to distribute shares under the voucher method. (Each Russian citizen received vouchers to purchase shares of formerly state-owned companies). By 1994, 33% of Gazprom's shares had been bought by 747,000 members of the public, mostly in exchange
Gazprom in the Nadym-Pur-Taz region (near the Gulf of Ob) in Yamalo-Nenets Autonomous Okrug in Western Siberia. Historically, the three largest fields are Medvezhe, Urengoy and Yamburg. After more than twenty years of production, the fields are now in decline. Production from the fields has decreased by twenty to twenty-five bcm per year. The production at Zaporliarnoe, Gazprom's fourth largest field, increased until 2004, offsetting the decline in the other fields. Since 2004, Gazprom has maintained production by activating new smaller fields and by purchasing production assets from other companies. Gazprom Neft produces crude oil. In 2005, Gazprom purchased 75 percent