Sriracha Refinery Expansion Project
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Summary Information

  • Ownership: Thai Oil
  • Website:
  • Wiki Page: Thai Oil Refinery
  • Location: Chonburi, Thailand
  • Capacity:
    • Before: 13.35 million tons/annum & 275,000 bbl/day
    • After: 20.0 million tons/annum & 400,000 bbl/day
  • Nelson Complexity:
  • Project Stage: Planning
  • Expected Completion: 2023
  • Budget: USD 4.8 billion

The Project

  • Project Type: Major expansion and upgrade, the company calls it the Clean Fuel Project (CFP)
  • Project Summary: The project will increase daily crude throughput from 275,000 barrels to 400,000 barrels. It will also boost the yield of cleaner and higher value products. Old units are to be replaced with new ones, including the crude oil units.
  • Main Contractors:
    • Amec Foster Wheeler: Front end Enegineering and Design (FEED)
    • Samsung Engineering, Petrofac, Saipem: Engineering, procurement, construction and project management (EPC&PM)
    • Chevron Lummus Global: Licences for LC-MAX residue upgrading unit and ISOCRACKING unit

Refining Units

  • Crude Distillation Unit (CDU)
  • Vacuum Distillation Unit (VDU)
  • Hydrocracker Unit (HCU) - 5.5 MM ton/year
  • Residue Hydrocracker Unit (RHCU) - 4.2 MM ton/year
  • Steam methane reformer

Terminal Capacity

  • Crude Oil:
  • Refined Products:

Crude Supply

  • Up to 50% of the crude oil intake will be heavy crude oil

Products Produced

  • The refinery will no longer produce fuel oil and will increase middle distillate yield to above 60%


  • 2016 - Amec Foster Wheeler awarded FEED contract
  • 2016 - Chevron Lummus Global awarded hydrocracker and residue hydrocracker licences
  • 2018 - Samsung Engineering, Petrofac & Saipem awarded EPC contract

Other Information

  • -

Relevant Links

  1. Presentation of the Project
  2. Amec Foster Wheeler wins Thai Oil’s Clean Fuel Project contract
  3. CLG’s Technologies Selected to Upgrade Thai Oil’s Sriracha Refinery
  4. Samsung Engineering / Petrofac / Saipem awarded major refinery plant in Thailand

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