It must be way higher if you really got into it

i.e. A friend that works on rigs is flown to and from rigs from anywhere on earth every month, then choppers out to the rig and back. Same for everyone that works on the rigs.

The helicopter fuel is a drop in the oil ocean. You can just check this but checking how much oil that rig produces per month. How many flights the helicopter does every month and the amount of oil needed for it. It’s gonna be a drop in the bucket. Otherwise it would not be profitable to drill for oil.

And? Given how much typical oil rig produces this would not be a serious part of its production.