Guwahati Refinery (Assam)

Guwahati Refinery (Assam)

GuwahatiRefinery Guwahati Refinery located among the picturesque surroundings near Brahmaputra River in Guwahati city in North Eastern part of India, is the country’s 1 st Public Sector Refinery as well as IndianOil’s serving the nation since 1962. Built with Rumanian technology available in the late 50s, the initial crude processing capacity of the Refinery was 0.75 Million Metric Tonnes Per Annum (MMTPA). The Refinery was designed to process a mix of OIL and ONGC crude along with Secondary processing units viz. Delayed Coker Unit (DCU) of 0.33 MMTPA capacity and Kerosene Treating Unit (KTU) of 0.23 MMTPA capacity. Subsequently capacity of the refinery was enhanced to 1.0 MMTPA in 1986.

INDMAX Unit, a technology developed by IndianOil R&D Centre for upgrading heavy ends to LPG, gasoline and diesel was commissioned in June 2003.

The following units were added to meet the fuel specifications.

Upcoming Projects: A New Semi regenerative CRU unit along with refinery expansion from 1 to 1.2 MMTPA has been approved and is expected to be completed in 2023.

Major products: LPG, Naphtha, MS, EBMS, HSD, SKO, ATF, LDO and Calcined / Green needle coke.

Mode of Product Dispatch


1).Pipeline: GSPL (Guwahati-Siliguri Product Pipeline) for MS, SKO and HSD. The refinery supplies petroleum products to North-Eastern India and Siliguri in West Bengal through GSPL.

2).Tanker trucks for LPG, Naphtha, EBMS and ATF.