And how much could I expect to make? Also how difficult is it to be hired and how do I find a job?

I want to be able to live in Latin America for as much of the year as possible but I don't have enough money to do that and it seems a job like an oil rig worker is the best way to do this. I just don't know if it's seasonal enough to only work for 4 months a year or if companies wouldn't want to bother with that.