Downstream
While E & P business shall continue to be Company’s core focus, selective diversification into downstream is planned in order to balance the existing portfolios. By enhancing its downstream portfolio with presence in sectors such as refining & petrochemicals and city gas distribution, OIL strengthens efficient product distribution and market reach, contributing to energy security and meeting the growing demand for hydrocarbon products in India. This strategic involvement in the downstream sector complements its upstream activities and supports its overall mission of delivering reliable and high-quality energy solutions.

Numaligarh Refinery Limited (NRL):
Majority stakeholder (69.63%) in NRL, a 3 MMTPA refinery in Assam.
Ongoing major expansion project to triple NRL's capacity to 9 MMTPA, including infrastructure enhancements for efficient crude oil sourcing.
Assam Petro-Chemicals Limited (APL):
Co-ownership with the Government of Assam.
Operates a 600 TPD methanol production capacity, with additional projects underway including a 200 TPD Formaldehyde plant.
Brahmaputra Cracker and Polymer Ltd (BCPL):
Holds a 10% stake in BCPL, a petrochemical complex. The principal end products of the complex are High Density Polyethylene (HDPE), Linear Low Density Polyethylene (LLDPE) and Poly-Propylene (PP).
OIL's subsidiary NRL also has a 10% stake in the company.

OIL’s CGD initiatives aim to deliver clean energy solutions to homes, businesses, and the automotive sector, contributing to improved air quality and public health.
Presence in 9 Geographical Areas across 6 States.
Working towards providing piped natural gas to homes and businesses, as well as expanding CNG station networks.
Joint Venture Company | Partners | Geographical Areas |
---|---|---|
HPOIL Gas Private Ltd. | HPCL (equal equity with OIL) | Haryana, Maharashtra, Nagaland |
Purba Bharati Gas Private Limited | GAIL Gas Limited (26%), Assam Gas Company Limited (48%) | Assam (including Kamrup Metro and Kamrup) |
North East Gas Distribution Company Limited | Assam Gas Company Limited (51%) | Assam, Tripura |
OIL-BPCL consortium | BPCL (equal equity with OIL) | Arunachal Pradesh |