Is studying Petroleum Engineering hard?

I am studying two majors, including Petroleum Engineering. I hope everyone can advise me on the work and difficulties of this profession.

I am taking the university entrance exam this year and am interested in Petroleum Engineering and Aeronautical Engineering. I would like to ask everyone who has worked in this field about the hardships and difficulties of the job.

I don't know how long a petroleum engineer working at sea can return to land once and for how many days? I hope everyone can advise me.

Long Phung

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