All of the oil in the world has manually been pumped to one central location, Refin Center, at the center of the map. Using next-level engineering the pipework is all done underground which avoids any pre-existing builds. At every oil field there is a hypertube which grants access to the facility, however the entire facility will need to be powered up before hand. This will cost about 7,000 MW. Since the facility is underground expansion into a massive factory is the easiest it will ever be but pulling products into or out of the facility will become a new obstacle.