Mazeikiu Nafta Refinery

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Summary Information

  • Ownership: PKN Orlen
  • Website:
  • Location: North-West of Lithuania
  • Capacity: 9.0 million tons/annum & bbl/day
  • Nelson Complexity:

Refining Units

  • CDU
  • VDU
  • FCC
  • Isomerisation C5/C6
  • Visbreaker
  • Gasoline Hydrotreater
  • Kerosene Hydrotreater
  • Diesel Desulphurisation
  • catalytic reforming
  • Bitumen production
  • Sulphur recovery Unit

Terminal Capacity

  • Crude Oil:
  • Refined Products:

Crude Supply

  • Until July 2006, the primary feedstock processed by the Mazeikiai Refinery was Russian crude oil shipped by the Druzhba Pipeline system. These supplies were supplemented by crude oil and other feedstocks delivered by railway. Mazeikiu Nafta also purchases for the Refinery truck shipments of crude oil produced in Lithuania. Currently the main deliveries of crude oil to the Mazeikiai Refinery come via the Butinge Oil Terminal.

Products Produced

  • Gasolines:
  • Diesel fuels
  • Fuel oil
  • Jet fuel JET A-1
  • Liquefied petroleum gas
  • Bitumen
  • Elemental sulphur

Ongoing Projects

  • Mazeikiu Nafta Refinery Project
  • Major investments are directed to build a hydrocracking unit seeking to increase the output of high quality distillates (reaction fuel, diesel) and balance production of petrol.
  • KT-1/1 facility is also being reconstructed to enlarge it‘s capacities in vacuum distillate catalytic cracking and gas fractioning.
  • A visbreaking section will be upgraded and new vacuum flasher shall be built to achieve a deeper level of tar refining

Other Information

  • The design capacity of the Mazeikiai Refinery is 15 million tonnes of crude oil per year. Given the existing technologies and current marketing conditions, the efficient refining volume is 8 million tonnes a year.


  • 1966 – start of designing of a refinery to be built in Lithuania
  • 1966 – start of construction of trunk crude oil pipelines in Lithuania
  • 1968 – commissioning of the Birzai Pump Station on the Polotsk – Ventspils crude oil pipeline
  • 1970 – commissioning of the Polotsk – Ventspils products pipeline crossing Lithuania
  • 1971 – geologists complete studies of the refinery site. Site preparation activities started in autumn with constructing roads and railways
  • 1972 – start of refinery construction work
  • 1979 – completion of the Polotsk – Birzai – Mazeikiai crude oil pipeline
  • 1980 – commissioning of LK-6U Unit (atmospheric rectification, catalytic reforming, distillates hydrotreating, and a gas plant)
  • 1984 – commissioning of the second LK-6U Unit
  • 1989 – commissioning of KT-1/1 Unit (heavy fuel oil vacuum distillation, visbreaking, distillates hydrotreating, catalytic cracking, absorption, and gas fractionation)
  • 1995 – state-owned company Nafta reorganized into joint-stock company Mazeikiu Nafta, with around 90 percent of shares remaining in the government’s hands and the other 10 percent distributed among employees
  • December 1, 1998 – reorganization of the joint-stock companies Mazeikiu Nafta, Butinges Nafta (operator of the Butinge Terminal), and Naftotiekis (operator of Lithuanian pipelines), with merging the latter two into Mazeikiu Nafta
  • July 21, 1999 – start of loading operations in the Butinge Terminal
  • October 29, 1999 – the Lithuanian Government, Mazeikiu Nafta, and Williams International sign an agreement, under which Williams International became a 33-percent owner and operator of Mazeikiu Nafta
  • 2000 – start of a comprehensive refinery modernization program
  • July 18, 2002 – the Lithuanian Government, Williams International, and YUKOS sign investment agreements, under which YUKOS acquired a 26.85-percent stake in Mazeikiu Nafta
  • September 19, 2002 – YUKOS acquires from Williams International an additional 26.85 percent stake and associated rights in Mazeikiu Nafta, assuming all rights and obligations of Williams International under the 1999 agreements with the Lithuanian Government including operator rights in Mazeikiu Nafta
  • Beginning of 2003 - UAB Mazeikiu Nafta Trading House, subsidiary of AB Mazeikiu Nafta, established for marketing Mazeikiu Nafta's products
  • September 2003 – Isomerization Unit PENEX commissioned
  • 2004 – Rail Car On-spot Loading Facilities commissioned
  • 2005 – Foster Wheeler Wins contract for of construction of gasoline hydrotreater
  • 2005 – Mazeikiu Nafta acquires the majority interest in AB Mazeikiu Elektrine (Power Station)
  • 2006 – PKN ORLEN, Polish company, becomes the major shareholder of Mazeikiu Nafta
  • August 2007 – FCC Gasoline Hydrotreatment Unit commissioned
  • June 2009 – official opening of the new Hydrogen Generation Unit

Relevant Links

  1. Refinery Development Plans pdf
  2. Giprogazoochistka Refinery References
  3. Foster Wheeler Wins New Hydrotreater Unit in Lithuania for AB Mazeikiu Nafta
  4. PKN Orlen Acquired Mazeikiu Nafta
  5. Interruptions in Crude Oil Supplies to Mazeikiu Nafta
  6. New Units Commissioned at Mazeikiu Nafta

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