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Hydraulic Fracturing Simulation in Iranian Carbonate Reservoir

Amoorizi Varnamkhasti, Kianoosh | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46100 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Jamshidi, Saeed; Pak, Ali
  7. Abstract:
  8. This paper presents finite-element simulation results for hydraulic fracture’s initiation, propagation at reservoirs with damaged zone and naturally fractured reservoirs that likely finds in Iranian oil fields. To address this objective, a two-dimensional poro-elastic model was solved and cohesive zone modeling was used as the methodology for simulation fractures. This enables us to assign individual criteria for fracture initiation and propagation in each model. Our results demonstrate that hydraulic fracturing is not useful in reservoir with strongly damaged zone around the wellbore, because pore pressure increases at that zone and plastic flow of fracture wall happens, so it is better to increase the permeability of the zone and then runs the fracturing tools and fracturing the wellbore. Another result is that the fracture propagation stops when the fracture tip arrives to major natural-fracture that exists in the reservoirs. Consequently, the final fracture length relates to the place of the natural fracture. At the end, it must be said that the fracture beginning is the critical place that propants must carry biggest loads along the fracture length and therefore, it must be designed to carry the loads at this place
  9. Keywords:
  10. Finite Element Method ; Simulation ; Naturally Fractured Reservoir ; Hydraulic Fracturing ; Porous Media ; Damaged Zone

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