Cutter Stock Posted on 7th November 201523rd July 2021 by ThePD (The Project Definition) A Cutter Stock is a light petroleum used to reduce viscosity of heavier oil. These are used to cut heavy oil in order to make it easier to transport. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Engineering and tagged oil, production, technology. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.