Dear friend,
For petroleum engineering you need to qualify AIEEE 2018 exam and score around 120 marks in it for getting good college .
PANDIT DINADAYAL PETROLIUM UNIVERSITY, GANDHINAGAR   (best Institute for petroleum engineering)
These are some other top college who offer petroleum engineering courses.
1. Indian school of mines, Dhanbad.
2. Institute of technology, Varanasi.
3. College of engineering, Guindy, chennai.
4. Karnataka engineering college.
If you have interest in it ,you can take admission in any of the college mentioned above.
There is scope in this field ,but you need to work hard for it.