Oilfield here. As others have said, do it while you're young and single. I wish I'd gotten into the oilfield when I was younger and single.
One of my lab techs that works for me was a driller for several years offshore, and has worked all over the world with Diamond. Single guy for most of it. Dude is a millionaire, without a care in the world at age 45. He is happy just being a lab tech now...it's not about the money. He loves the 7 on, 7 off schedule and sleeping in his own bed every night after 20 years of offshore worldwide.
