Lets summarize this:
N-regs are prohibited from flying there.....
That leaves the EASA-countries, as i am not aware of any aussie-company interested in that area...
The market is very small....so i am still wondering where they want to get the airframes from...
Btw:
"OGP" does not mean "Offshore"......there are OGP-operations onshore...
The Bell 412 is not allowed offshore any longer-the existing ones will continue to fly offshore until the end of this year (max. end 2016), then taken out of service (for OGP offshore!) due to the new regulations on emergency exit window size...