Study and Development of Dual Porosity/Permeability Models for Simulation of Forced Gravity Drainage Mechanism in Fractured Porous Media

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Samimi Ardestani, Ehsan | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41076 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Massihi, Mohsen; Gerami, Shahab; Ganjeh Ghazvini, Mostafa
Abstract:
The available investigations show that gravity drainage mechanism in fractured reservoir make a high recovery factor in comparison with other mechanisms. In recent years, the forced gravity drainage assisted by gas injection is also introduced; despite of its importance there is no comprehensive modeling study in the literature. The fractured reservoir is simulated frequently by dual porosity models in which the transfer function is the key issue for this method of simulation. This study makes an effort by comparison of different transfer functions with fine grid simulation results of a single block model, in order to evaluate their ability for simulation of forced gravity drainage mechanism. Such a study can be used to modify the current transfer functions for interplay of capillary, gravity and viscous forces. This study concluded a new developed transfer functions with considering viscous force. The new transfer function is sensitive with gas injection rate and its results are in a good agreement with fine grid simulation. Sensitivity analysis of new model demonstrates its ability for simulation of forced gravity drainage
Keywords:
Dual Porosity Model ; Transfer Function ; Forced Gravity Drainage ; Viscous Force