Sakai Refinery Upgrade Project
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Refineries in Japan

Cosmo Oil Refineries

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Summary Information

  • Ownership: Cosmo Oil
  • Website:
  • Wiki Page: Sakai Refinery
  • Location: OSAKA, Japan
  • Capacity: 5.0 million tons/annum & 100,000 bbl/day
  • Nelson Complexity:
  • Project Stage: Completed
  • Expected Completion: 2010
  • Budget: ¥100 billion

The Project

  • Project Type: Upgrade
  • Project Summary: The new units uses the asphalt fraction as raw material to produce naphtha, jet fuels, and diesel oil. This allows a shift to profitable production, for example, from heavy oil made from crude to middle distillate.
  • Main Contractors

Refining Units

  • Atmospheric Distillation
  • Heavy Oil Cracking Unit(Delayed Coker) 25,000BBL/Day
  • Resolved Gasoil Distillate Hydrodesulfurisation Unit 25,000BBL/Day
  • Naphtha Hydrodesulfurisation Unit: 17,000BBL/Day

Terminal Capacity

  • Crude Oil:
  • Refined Products:

Crude Supply

  • -

Products Produced

  • Naphtha, jet fuels, diesel oil and petrocoke


  • 2006 - Upgrade decision taken
  • 2010 - Completion of the Delayed Coker Unit Project

Other Information

  • -

Relevant Links

  1. Investment in Sophisticated Oil Refineries and Entry into the Wholesale Business of CARB-diesel on the West Coast Area of the US
  2. Completion ceremony for Coker Unit

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