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PETROLEUM SYSTEM - Coggle Diagram

- - - - Porosity
        
        space between rock grains
      - Permeability
        
        passage-ways between pores
    - - Layer of reservoir rock
      - to avoid the movement of hydrocarbon fluids
- - - - Onshore
      - Offshore
  - - - Porous rocks
      - Permeable rocks
        
        Hydrocarbon can be absorbed, accumulated and moved
  - - - According to the density of each hydrocarbon component
      - 1st
        
        Water (heavy)
      - 2nd
        
        Oil (light)
      - 3rd
        
        Gas (lighter)