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Investigation of Water Coning Phenomenon and its Effective Parameters in a Fractured Reservoir

Emamirad, Pedram | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 49028 (66)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Masihi, Mohsen; Ghazanfari, Mohammad Hossein
  7. Abstract:
  8. Water coning is a complex phenomenon that depends on various parameters which include among: production rate, matrix and fracture permeability, perforation interval, aquifer size, mobility ratio, capillary pressure, etc. Production of water can greatly affect the productivity of a well and the reservoir at large volume. In naturally fractured reservoirs, this problem is more complex because permeability of the fractures in the porous media is too high. With this complexity of water coning behavior in naturally fractured reservoir, this phenomenon was studied by simulating a sector of a carbonate fractured reservoir supported by an aquifer using Eclipse-300 simulator. A sector of an Iranian fractured reservoir has been simulated in this work and the effects of various parameters were investigated. It has been determined that, perforation intervals, fracture permeability and its orientation, especially horizontal fracture permeability, production rate, mobility ratio, and fracture storativity have the main role in this phenomenon. It should be noted that aquifer strength, fracture spacing, and skin factor may also effect the production of water in fractured reservoir. Effects of breakthrough time, pressure drawdown and total water production has also been studied in this work. We concluded that for prevention of water coning in fractured reservoirs, investigation of both controllable and uncontrollable parameters is very important
  9. Keywords:
  10. Carbonate Resrevoirs ; Simulation ; Coning ; Water Coning

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