It would be nice if Kaz had state-sponsored heavy SAR to look after the oil industry. Thought the 92 had the inside track, but never underestimate those wily Frenchmen.
CHC is in there now helping a local operator with their 139 fleet, before that Bristow with the 76. That Karshygan field is pretty close, maybe 20 minutes from Atyrau, so even a 365 or 155 would be fine.
Lots of good Kaz helicopter pilots, so all you expats can expect to get run out as soon as the locals figure out that all they need is a consultant or two to run an SMS program. The foreign oil companies will howl in protest, but in the end will swallow it - like they did in Azerbaijan, Angola, Brazil....etc.