These products are needed in the following chains that try to emulate realistic processes: (many with some byproducts)
-- Hydrotreating (with the precious Hydrogen; no simple electrolysis here to produce this...) raw oils, yields sulfur.
-- Steam Reforming to yield Hydrogen
-- Steam Cracking to yield Olefines and Pygas
-- Catalytic Reforming of Naphta to yield Reformate
-- Extracting Reformate to yield Aromatics and Gasoline
-- Mixture of Kerosene and Fuel Oil to yield Diesel
-- Fractional Vacuum Rectification to yield Bitumen, Oil and Short Residue
-- Delayed Coking to yield Lubricant, Oils and Coke
-- Coke and Fuel Oil used in special Metallurgy Sector (Blast Furnace)
-- Rocket Fuel from Kerosene and Hydrogen
-- Plastic from Olefines and Aromatics
-- Chemical Science Packs from Aromatics(TESTING NEEDED!)
-- Hydrocracking Raw Fuel Oil

Beside that:
-- Synthetic Rubber
-- Transport Belts from Rubber, Gears and Lubricant
-- Oil burning facility
-- If Asphalt Roads installed: new Asphalt recipe with Bitumen
-- Tar Sands
-- Petroleum Gas Fracking
-- New Concrete recipe with Sand from Dross from Metallurgy recipes
-- Carbon(PLANNED)
-- ...