Sounds a lot like young oilfield hands at the start of a boom, only no jets landing over your bunk (the continuous sound of back up alarms, the drilling rig, and heavy trucks moving in and out is there instead). But then, a lot of successful hands are veterans, too. (BTW, mandatory drug testing pre-hire, no alcohol or drugs on site, random tests during employment, definite tests in the event of an accident, are de rigeur in the patch).
But the job, a 12 hour day is basic, may mean additional time driving to and from the site, if town is close, or staying in crew quarters if it isn't. You don't know where the next job will be, how long it will last, when it will be done. If you are a service hand, you could be in North Dakota today, New Mexico in three, Wyoming the next. After 20 years, at least one divorce is normal, and you never know when the bottom will drop out.
Not complaining. It's a great life if you don't weaken. (What doesn't kill you makes you stronger).