To all those who may be leaving in 5-6 months - you should already apply to every oil and gas job you see outside.
Don't think you won't be impacted - better prepare for it and then not use it.
If you don't land something within 6 months of leaving - your chances will decrease a lot.
You can retool to a different industry - but face it, starting as a junior in a new industry and competing with recent graduates may not be a very enjoyable place in life.
Anyway - do something today! The oil and gas jobs out there are limited, but they do exist!