Crude Oil Distillation Tower - Sectioned Off Crude Oil Distillates - Diagram drawn by Theresa knott. This is a diagram of a typical, atmospheric pressure crude oil distillation tower used in petroleum refining (oil refineries). According to Theresa knott's user page (and her Image gallery), this image was originally created by her. - Mbeychok 23:26, 20 September 2007 (UTC)