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摘要
The current percolation theory is difficult to describe the fluid flow mechanism in naturally fractured vuggy reservoirs. A new mathematical model, namely discrete fracture-vug network model, was proposed to solve the problem. The fractured vuggy reservoir was divided into three systems in the new model, including the porous rock system, fracture system and vug system. The fractures and vugs were supposed to be embedded in the porous rock, and the isolated vugs were connected via discrete fracture network. The fluid flow in porous rock and fractures followed the Darcy Law. The rock fractures were taken as seepage area, and the vugs system was the free fluid flow region. The principles of the mathematical model were discussed. The corresponding finite element numerical formulas were proposed. The numerical computation results showed that the discrete fracture-vug network model could provide a natural way for modeling the realistic conditions in fractured vuggy reservoirs.
- 出版日期2010
- 单位中国石油大学（华东）
