Mafuta a petroleum coke oyeretsedwa kwambiri amapangidwa kuchokera ku coke yapamwamba kwambiri yamafuta pansi pa kutentha kwa 2,500-3,500 ℃. Monga zakuthupi zoyera kwambiri za kaboni, zimakhala ndi mawonekedwe apamwamba kwambiri a carbon, otsika sulfure, phulusa lochepa, porosity yotsika etc.
