1.Petronet LNG Ltd.
2. Reliance Petroleum
3. Reliance Natural Resources Limited
4. Aban Offshore
5. Petronet LNG Ltd.
6. ONGC Corporation
7. Oil India Ltd
8. Mangalore Refinery and Petrochemicals Limited
9. Mahanagar Gas
10. Indraprastha Gas
11. Indian Oil Corporation Ltd (IOCL)
12. IBP
13. Hindustan Petroleaum Corp. Ltd (HPCL)