Just look at the world consumption, and then imagine what it would take to produce a tenth of that figure.
Loose rivets, what it would take is an infrastructure. Right now, no-one is building that infrastructure because it wouldn't be be profitable. Once the price of oil rises sufficiently, you'll be amazed how quickly Shell, Exxon &c will start to build it, when they see they can make a few billion a year out of it.