Oleg Germanovich Belyavsky was born on June 21, 1963 in Baku. In 1986, he graduated from the Azerbaijan Institute of Oil and Chemistry, where he specialised in “Chemical technology in the processing of oil and gas”. He was posted to Moscow, to the Orgneftekhimzavody Engineering and Production Trust. Prior to 1994, he participated in the construction, commissioning and start-up of petrochemical facilities in various cities in Russia. In 1994, he was appointed head of the under-construction ROSC installation, and then Deputy Head of the Omsk Oil Refinery.
In 1996, he became Chief Technologist, then in 2000 Chief Engineer of the Omsk Refinery’s second plant. In October 2001, Oleg Belyavsky served as Head of Production of primary oil refining, and in October 2002 he was appointed Chief Engineer of the Omsk Oil Refinery.
In 2008-2009 he worked as Chief Engineer of the Omskneftekhimproekt project.
From 2009 to 2011 he served as Executive Director for Refining at the Serbian NIS oil company, a member of Gazprom Neft Group, and was later appointed Executive Director of the Omsk Oil Refinery, the post he held up to this point.