Vortoil Deoiling Hydrocyclone is widely used in offshore oil production for the efficient treatment of large volumes of produced water. Based on the physics of enhanced gravity seperation and free vortex action, the hydrocyclone has a cylindrical inlet followed by a tapered tube with the liquids entering through tengential inlets. These forces, combined with differential pressures set up across the hydrocyclone, enable the heavy phase to exit at the underflow while the lighter phase falls into reverse flow and exits the overflow at the opposite end.