Lots of variety in looking back at this thread - only noticed one member say they worked in oil & gas but know for a fact a few do.
I myself work as a fiscal & allocation measurement specialist - 15 years offshore in total with stints in Norway, Africa & the middle east before getting a cushy 2/3 rota 40 mins out of Aberdeen.
In short, if it involves intercompany transfer or taxation of oil, gas or waste water \ combusted hydrocarbons, I have a fair degree of involvement with it.