If you are particularly bold, you could use a Shiny Ditto. Do keep in mind though, this will infuriate your opponents due to Ditto's beauty. Please do not use Shiny Ditto. You have been warned.
Think about how oil gets moved in todays world. Massive ships moving it from one part of the world to the next. Now you want to make it profitable to use their natural resources to fuel our needs. It couldn't be done. To set up an operation like that it would cost close to a trillion dollars. It would take several years to get a shipment of that stuff to earth. So think about how big of a ship you would need to make it profitable.
Currently ships move 2billion barrels of oil a year and it costs of that break down to about .02 a gallon at the pump. So now think about how much it would cost to build a ship that can hold oil (most super takers hold close to 3.1 million barrels) and get it in space and then get Europa. While there get the oil onto the ship and then get it back and get the oil back down to earth. It just isn't economically feasible.
Ah yes, Europa...
An intriguing moon indeed. Icy surface, salty water rich on minerals and presumably with underwater heat source from geothermal activity caused by Jupiter and it's other moon's gravitational pull. Something might have brewed up in there, but if it has, it will be very very different from anything we know.
Sadly, mounting any kind of proper research expedition is right now out of our capabilities. Apart from the distance and alien environment, one of the moon's biggest issues is radiation it receives from Jupiter. At 540rem per day, we can only dream of manned mission to that place (for example, Fukushima at it's peak produced 19.2 rem a day, resulting in 40km radius evacutaion). I'd like to hope for at least a robotic mission, but look at how far have we gotten with that on Mars. It certainly is a heap of progress, but those little things are barely able to scrape the surface for mineral samples, let alone drill through 10-30km of shifting ice.