Unlocking strategic exploration and production

GAIL (India) Limited entered the Exploration & Production (E&P) sector as a strategic move in response to changes in the energy landscape. With rising competition in its core gas transmission and distribution business, and declining reserves from existing fields, it became important to secure reliable and long-term gas supplies. To address this, GAIL expanded into the E&P segment, strengthening its role across the gas value chain and supporting India’s energy needs.


This move was driven by the need to bridge the demand–supply gap in natural gas, enhance energy security, and diversify its business portfolio. It also opened opportunities to invest in global upstream assets. Through its E&P activities, GAIL continues to ensure steady energy supply while supporting the country’s growing demand.


GAIL has Participating Interest (P.I) in 10 E&P blocks of which 8 are in India, 2 blocks in Myanmar.

E&P Stage Blocks/ Location Basin Operator
Production (5 Blocks) Onland: CB-ONN-2000/1 Cambay Basin GSPC
Onland: CB-ONN-2003/2 Cambay Basin GSPC
Offshore: A1 & A3, Myanmar Rakhine Offshore POSCO International
Onland: CB-ONN-2010/11 Cambay Basin GAIL
Appraisal / Development (2 Blocks) Onland: AA-ONN-2002/1 Assam Arakan Basin JOGPL
Offshore: CY-OS/2 Cauvery Basin Hardy
Exploration (3 Block) Onland: AA-ONN-2010/2 Assam Arakan Basin OIL
Onland: CB-ONHP-2017/12 Cambay Basin GAIL
Onland: RJ-ONHP-2021/1 Barmer Basin GAIL

GAIL holds participating interest in E&P blocks covering a total area of 3,172 sq. km through various consortiums. The Company is the operator in three onland blocks—CB-ONN-2010/11 and CB-ONHP-2017/12 in the Cambay Basin, and RJ-ONHP-2021/1 in the Barmer-Sanchor Basin, Rajasthan.


GAIL is currently generating revenue from five producing blocks. These include A-1 and A-3 blocks in Myanmar (operated by Posco International), and CB-ONN-2000/1, CB-ONN-2003/2, operated by GSPC and CB-ONN-2010/11 operated by GAIL in India.

GAIL Presence

E&P Global Map
E&P India Map