Hi aspirant....!

Hope you're doing great....!

so with regard of you're query. after completion of 12th. You should write the entrance examination such as Jee mains and advance or other entrance examinations which are providing petroleum engineering to you. The petroleum engineering comes under B.Tech program. In India there are so many colleges providing this branch. after the completion of this course  the future will be also good for the students.

I am providing  the list of colleges in India that are providing this course. by pressing the  following link  you can able to access it

https://engineering.careers360.com/colleges/list-of-petroleum-engineering-colleges-in-india

hope this will helps you...!

good luck...!