The state-run oil company has invited coupon and commitment bids from bankers and investors on Friday, they said.
The notes are rated AA by CRISIL and ICRA and the issue has a greenshoe option to retain an additional 4 billion rupees.
In January, the company had withdrawn its planned reissue of 8.58% November 2029 bonds on higher yield bids. ($1 = 81.8750 Indian rupees) (Reporting by Dharamraj Dhutia Editing by Sonia Cheema)