When pumping oil out at sea in the new Minecraft Tekkit, how can you deal with the mixture of water and oil that you get? Is there a way to "sort" them?
The Minefactory Reloaded mod has a Liquid Router that does exactly what your asking for.
The Liquid Router acts as a filter for liquids. It has six input/output faces, each with a set color: purple for the top face, blue for the north, yellow for the east, green for the south, red for the west, and black for the bottom face. It has a simple GUI with six colored slots for each of the faces; adding a liquid to any of these slots will set the router to filter that liquid to the corresponding input/output face. The Liquid Router is compatible with Buildcraft Waterproof Pipes and Thermal Expansion Liquiducts; however, it does not work with Redpower Fluid Pipes.
There are a few methods to dealing with ocean oil:
the first (although ugliest) is to simply put make 2 tanks, a water tank and oil tank. since liquid can only occupy one tank at a time, it will sort itself out(just empty the water tanks often)
Another(much better) method of seperating the water and oil involves building a wall of gravel/sand. Use a Lily Pad to drop sand/gravel AROUND the 1x1 main oil spout, cutting off the water. This method is perhaps best for oil deposits at sea
if you have access do it you can also use Water Strainers to separate oil from water. just slap one along the main pipeline. it'll even generate some EU for you in the process (this method also leaves a giant hole in the ocean though, so careful)