Gazprom investment. On 5 July 2006, the Federal Law, "On Gas Export", was passed, nearly unanimously, by the State Duma and on the 7 July 2006, by the Federation Council. On 18 July Putin signed the new legislation and on 20 July 2006, the law was published. It gave Gazprom the exclusive right to export natural gas from Russia. On 4 September 2012, the European Commission, a Brussels-based competition watchdog, announced an anti-trust investigation into Gazprom's activities. This was based on "concerns that Gazprom may be abusing its dominant market position in upstream gas supply markets." On 21 May 2014, in
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