It can be a bit hard to explain to someone without experience in the field and it took me awhile to figure it out but the most basic way I can describe it is that you shouldn't take a job where you wear one of those wide brimmed hard hats that the guy in the above video is wearing, you want to wear the more traditional style hard that you see guys wearing on construction sites in the city.
I've said this a million times on this thread over the years- don't get into oil field work like drilling, fracking, geo-physical stuff (mud logging, wire lining, etc) because once oil shits the bed and goes bust, you'll be sitting on your ass not making any money, it's boom and bust. WTF does a fracking guy do when oil is down? I have no clue because I don't know any of those types of guys, perhaps Cattle Rustler can explain it.
Instead, I've always recommended TAKING A SKILLED TRADE!!!!
So welder, pipe fitter, boilermaker, crane operator, carpenter, insulator, electrician, plumber, sprinkler fitter, HVAC, instrumentation tech, machinest, etc.
All of the above trades can work in oil and gas but unlike oil field jobs, if oil goes bust then the skilled trades can work at shipyard, nuke plants, power plants, aviation, power plants, hydro, commercial construction, residential construction, etc.
I think that those job statistics sites are a bit misleading, sure there's some welders who make shitty money working at a non union sweat shop in some backwater town where he competes for work with illegals but that's a lot different than a union boiler maker or pipefitter welder in say Seattle, Chicago, NYC, etc where the unions are strong.
Again, here's links to the types of unions/work that I recommend guys look for:
Boiler Makers:
https://boilermakers.org/
Pipefitters:
http://www.ua.org/
Electricians:
http://www.ibew.org/