The oil company players range from very small companies up to the very biggest, and pretty much everything in between. All the majors are here. There are something over 5,000 platforms plus a large number of mobile drilling rigs. I can't keep up with all the helicopter companies, but there are probably close to 500/day flying out there. Just the majors, including PHI, Air Log, and ERA (now merged with TexAir) have around 500 ships between them. Sunrise at any of the major bases is something to avoid - lots and lots of helicopters all taking off at the same time, with absolutely no control. It's Class G airspace, and it's every pilot for himself. Once you get away from the bases, it's also every company on its own radio frequency, so you have no idea who's coming or going. And no weather reporting, no radar, no ATC, no nothing. And a good time is had by all.