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Pressure Response Analysis of Naturally Fractured Condensate Reservoirs Regarding the Effect of Permeability Anisotropy

Haji Seyedi, Hamed | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44732 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Jamshidi, Saied; Masihi, Mohsen
  7. Abstract:
  8. Producing from Gas Condensate Reservoirs under dew point pressure and at constant temperature may have a complex behavior because of existing two phase system and liquid around the well. Zones with different mobility generate as a zone away from the well containing only gas, a zone having liquid around the well and finally a zone with capillary effect. Existence of condensate around well reduces gas relative permeability and as a result productivity index of well decreases. In fact these condensate acts like an additional skin and because of some complex processes, investigating of these behaviors can be difficult.
    Well testing analysis in Natural Fractured reservoir is generally based on radial flow. In this project, first a of naturally fractured condensate reservoirs in Eclipse software has been created and then by using Draw Down test , pressure Data versus time created. By presenting a new method, these data analyzed and static and dynamic reservoir parameters obtained. Value of these parameters compared with real values which are defined in model and has been shown that this new method estimate parameters and specification of reservoir more exactly compared to well test analysis software like SAPHIR.The effect of permeability anisotropy in fractured network in both above and under dew point pressure investigated and by presenting a method, permeability of fractured network in different direction obtained.Also, in this project effect of different parameters on condensate saturation around the well of naturally fractured condensate reservoir investigated and has been shown that which of parameters has more effect on behavior of reservoir
  9. Keywords:
  10. Gas Condensate Reservoirs ; Well Testing ; Fractured Reservoirs ; Permeability Anisotropy ; Sensitivity Analysis

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