Hi Abhay,

The best petroleum and petrochemical engineering institutes in India are as follows:-

• Indian Institute of Technology Bombay
• Lovely Professional University, Phagwara
• Indian Institute of Technology Madras
• Maharaja Sayajirao University of Baroda, Vadodara
• Institute of Chemical Technology, Mumbai
• School of Engineering, University of Petroleum and Energy Studies, Dehradun
• Chandigarh University, Chandigarh
• MIT College of Engineering, Pune
• Andhra University College of Engineering, Visakhapatnam
• Presidency University, Bangalore
• Maharashtra Institute of Technology, Pune

Refer here for more info - https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-india?branch=Petrochemical%20Engineering,Petrochemical%20Engineering,Petroleum%20Engineering

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!