Ka26. Log it all as "offshore" and apply.
OGP has boxed the industry into a Catch-22 situation - you can't fly offshore without offshore time and you can't get any offshore time until you fly offshore. So the rest of us were born with 1000 hrs of offshore time I guess. Either that or OGP expects you to build offshore time flying for a non-OGP compliant company until you have the experience to meet their requirements - unconscionable.
Reality is that it is just a box tic, and nobody check up or back. Nobody is going to put you out there as single-pilot captain on your first day offshore. You will fly with experienced pilots that will pass on the operational knowledge required. A doddle, really.
Think about it, all the zero-time cadets that went from an R22 straight to FO on an offshore S92. And you think they are going to be concerned about you?