Joint Stock Company Gazpromneft-Omsk Refiner (Russian: Акционерное общество «Газпромнефть-Омский НПЗ»), abbreviated JSC Gazprom Neft-ONPZ (Russian: 'АО «Газпромнефть-ОНПЗ»), and commonly known as the Omsk Refinery (Russian: «Газпромнефть-ОНПЗ»), is one of Russia's largest oil-processing enterprises, operating in the city of Omsk in Western Siberia.
Historical Background
Soviet authorities approved construction of the refinery in 1949, and it began operations on 6 September 1955, initially processing feedstock from Bashkortostan before switching to Siberian crude via the Ust-Balyk–Omsk pipeline from 1964 onward. In its first year, the plant processed just 280,000 tons of crude and produced four types of petroleum products, with its first director being Alexander Malunutsev. By the mid-1970s, the refinery had grown into the largest in the Soviet Union, processing 24 million tons of oil annually, and it commissioned its first catalytic cracking unit in 1959 followed by an aromatic hydrocarbons complex in 1983.
In 1995, the plant became part of the Siberian Oil Company (Sibneft), which was renamed Gazprom Neft in 2006 after Gazprom's acquisition, giving the refinery its current corporate identity as a subsidiary of the state-controlled gas giant.
Corporate Identity and Ownership
The entity operates under the legal name JSC Gazpromneft-ONPZ, functioning as a direct subsidiary of PJSC Gazprom Neft, itself majority-owned by Russian energy conglomerate Gazprom. As a state-linked enterprise, the refinery primarily serves the Russian domestic fuel market, with additional export supplies directed to Kazakhstan.
Modernization Program and Investment
Since 2008, Gazprom Neft has pursued a full-scale modernization program at Omsk, with cumulative investment exceeding 300–700 billion rubles across multiple phases aimed at boosting environmental compliance, conversion depth, and light-product yields. Phase one, completed in 2015, brought fuel output up to Euro 5 standards, while phase two—targeting 97% refining depth and 80% light-product yield—was slated for completion around 2021–2025. By 2021, the company had invested 60 billion rubles specifically enabling heavy-oil processing improvements, and total capital invested in the plant reached that level with capacity to produce 300,000 tons per year of internationally certified Jet A-1 fuel.
Major contracts have included a 2016 grassroots primary processing complex awarded to RusTechnip (a Technip–Rostec joint venture), commissioned around 2019, alongside a new primary oil refining complex that began commissioning work in 2023 with over 66 billion rubles invested.
Environmental Compliance
The refinery has been fitted with sulfur-removal technologies capable of eliminating 99.8% of sulfur compounds from feedstock, bringing it into full compliance with Russian clean air and ecology regulations enacted under a May 2018 decree.
Safety Incidents
The refinery has experienced several serious incidents over its history. A fire on 5 July 2000 involving a burning rail tanker spread to other cars and triggered an explosion that killed 3 people and injured 84, including 34 children who had gathered to watch firefighting efforts. More recently, amid the Russia-Ukraine conflict, the facility suffered a rail-car fire on 25 April 2024 requiring firefighting trains, followed by an explosion and fire on 26 August 2024 that burned roughly 1,000 square meters and injured seven workers, one fatally. On 6 July 2026, the refinery was struck by Ukrainian Fire Point FP-1 drones as part of the ongoing conflict.
