hello aspirant,
you can refer to the article where you will know many things about petroleum engineering , the exams through which you can go to australia for the studies and the companies that may recruit you there-
https://www.careers360.com/courses/petroleum-engineering-course
for any more help, you can get back to us with a new query.
also, keep surfing the net, keep collecting information from different sources and then only take a decision.
hope that helps
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