Filters That Can (Partially) Refine Crude Oil (science.org)

Actual title is "Crude Oil, Treated Less Crudely", but, while cute, that didn't seem very informative.

>"In other words, you can put dilute crude oil on one side of the membrane and, by applying pressure, drain off what is more or less gasoline from the other."

If that works, then that technology sounds very promising!