Process crude oil into a single product in specialized refineries. (Updated July 2018 for the latest 0.16.x)
Crude oil patches vanish if depleted. Also supports Angel's, Bob's, MadClown's and Pyanodon*s gases and liquids.
A pumpjack which extract oil from the depths of the planet, made from the BinbinHfr mod : https://mods.factorio.com/mods/binbinhfr/WaterWell
A more involved Bergius process. Make oil from algae, which in turn is made from water, sulfur and stone.
Adds synthetic oil to the game. Bio fuel (petrol gas) from wood and heavy oil from coal.
Fluids (oil, lith water, ground water) in main and bobs mods are no longer infinite.
the mods adds a bit more way's to make oil, you can get more oil wen you use coal during proccesing. you can make oil from a lot of wood and a bit of time.
Structure to exhaust depleted oil patches. Drains the remains of oil and destroys the patch. Looking for better graphics...