The effect of vugy fractions on oil recovery factor and breakthrough time for two phase radial flow by mean of reservoir simulater

Statistical studies observed that most of the world's hydrocarbon reserves are in carbonate formation. However, carbonate reservoirs are mostly heterogeneous and have primary and secondary porosity (Vug or Fracture). The primary (matrix) represents the major storage capacity while secondary system (Vug or Fracture) provides the main paths of the flowing fluids. In addition, The new studies show that Vuggy porous media are common in carbonate rocks. Because it is difficult to collect production data for one well with different vugs distribution, one of the most popular reservoir simulators in the oil and gas industry