Living up here i know quite a few guys who work offshore.
One guy works in the labs testing the quality of the water and stuff on the rigs and boats.
Another guy does quality control on the drilling and wells. He's off to turkey for a month to do some work over there.
Loads of retired folk as well. They just got into it because of where they are from. Best thing to do is get in touch with the companies from what I've heard. My mates gf works for a company that is responsible for sending the right staff out to the rigs and stuff and she said that, although they arent exactly crying out for jobs, there will always be people about.