Pros
They will hire you without any experience and you will make good money as a bottom hand. Sometimes I would come back from working weeks on end and have 3 to 4 checks waiting on me. Per diem/day bonus/paycheck. Made about 100k my first full year but that was when the oilfield was busy. And you got to travel and see most of the state and other states sometimes.
Cons
All depends on price of oil! You have no life outside of work because you are working so much. Most I worked was about 2 to 3 months straight with a few days off here and there sometimes 48 hours straight rigging up. You have to prove yourself to your district manager to start taking weekends off and vacation which thankfully I was on his good side. They always bragged about never laying anybody off but recently they have had plenty of layoffs.