There's no' the best' stream in engineering every stream is best in its own way you just need to find out what's best for you. However, petroleum engineering is among the streams with comparetively low compitition as compared to CSE ECE or ME as few students opt this but this stream holds a great future for you .

• Petroleum engineering is a rigorous four-year program, and some universities offer a five-year petroleum engineering program where you earn both a bachelor's and a master's degree.

It basically depends uponyour interest thst makes the course best.