Off on a bit of a tangent here, but there is some merit in the thought of oil companies owning their own helicopters and helicopter maintenance capability, and running the whole show privately. Like the Esso model. It has to be cheaper than paying contractors to do the job, with all those contractor overheads of top heavy senior managers and meetings for meetings sake, and maintaining the higher standard of "for hire" regulatory compliance, and shareholders expecting dividends from profits etc etc. Safety statistics are also likely in favour of this approach.