Right now the amount of energy it takes to extract every gallon of oil from the ground is creeping up decade by decade. So you end up having to consume your own

Right now the amount of energy it takes to extract every gallon of oil from the ground is creeping up decade by decade. So you end up having to consume your own supply to make it fit for consumers. I can see a day where solar powered refineries exist. Either under their own power or by being grid-tied. But there will come a time when it’s just too expensive to pull it up from many places and we end up with dozens of wells and optimize cracking for petrochemicals other than fuel.