How a 6 MMTPA Refinery Became One of India's Largest Integrated Refining & Petrochemical Complexes.
Before the 1990s, North India's growing economy depended on fuels transported from refineries hundreds of kilometres away.
IndianOil's response wasn't simply to build another refinery.
It was to build a refinery engineered to evolve.
Commissioned in July 1998, Panipat Refinery was strategically located on the Kandla–Panipat crude pipeline corridor, strengthening crude logistics and fuel supply across Northern India.
The Numbers That Built Panipat :
- Construction began: 1994
- Commissioned: July 1998
- Initial Investment: ₹3,868 Crore
- Initial Capacity: 6 MMTPA
- Location: Panipat, Haryana
- Designed to process both indigenous and imported crude
THE ENGINEERING DECISIONS
Rather than constructing multiple standalone facilities, Indian Oil chose to continuously expand and integrate Panipat through brownfield engineering.
Key decisions included:
- 2006: Capacity doubled from 6 to 12 MMTPA
- Addition of a Second Crude Distillation Unit
- Full Conversion Hydrocracker to improve middle-distillate yield and crude flexibility
- Delayed Coker Unit to convert heavier residues into higher-value products
- Hydrogen Generation, Sulphur Recovery and Utility System expansions
•2010: Capacity increased to 15 MMTPA through revamps and debottlenecking, without constructing a new refinery.
Each expansion improved conversion efficiency, product yield and crude processing flexibility.
THE TECHNOLOGY MILESTONES
1998 — Refinery commissioned
1999 — Diesel Hydro Desulphurisation Unit
2006 — India's then-largest 360 KTPA Paraxylene & 553 KTPA PTA Complex 2010 — World-scale 857 KTPA Naphtha Cracker Complex
2014 — Polyethylene & Polypropylene value chain commissioned
2020 — BS-VI fuel projects completed
2023 — PX expanded to 460 KTPA, PTA to 700 KTPA, Ethylene Recovery Unit commissioned
2024 — Indigenous Catalyst Manufacturing Unit commissioned
The Next Chapter
Today, Panipat stands among IndianOil's largest integrated refining and petrochemical complexes.
The approved expansion from 15 to 25 MMTPA, backed by an investment of ~₹38,000 Crore, will support expanded petrochemical production while advancing Sustainable Aviation Fuel (SAF) and Green Hydrogen initiatives.
From an initial investment of ₹3,868 Crore to a ₹38,000 Crore expansion programme, Panipat demonstrates how continuous brownfield engineering can create far greater long-term value than simply building another refinery.
Panipat wasn't built once.
It has been continuously engineered for more than two decades.
A refinery is commissioned once. Its engineering evolution never stops.
