NDLI: Modeling wettability alteration in naturally fractured reservoirs

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Modeling wettability alteration in naturally fractured reservoirs

Content Provider	Semantic Scholar
Author	Delshad, Mojdeh Najafabadi, Nariman Fathi Anderson, Glen Allen Pope, Gary A. Sepehrnoori, Kamy
Copyright Year	2006
Abstract	Modeling Wettability Alteration in Naturally Fractured Reservoirs By Nariman Fathi Najafabadi, M.S.E The University of Texas at Austin, 2005 SUPERVISORS: Mojdeh Delshad and Kamy Sepehrnoori The main objective of this research is to model the wettability alteration effect of surfactant on the porous medium combined with its interfacial tension (IFT) reduction and oil mobilization effects. One of the main applications of this model would be in simulation of surfactant floods in naturally fractured reservoirs (NFR), where imbibition of the injected brine by the matrix rock and expulsion of oil is the most important mechanism of oil production. The injected surfactant changes the wetting state of the matrix rock to more water-wet conditions which results in higher brine imbibition rates and therefore higher oil production rates. To model the wettability alteration effects of surfactants, UTCHEM, the chemical compositional oil reservoir simulator of University of Texas at Austin was chosen. The wettability alteration is modeled by its effect on relative permeability and capillary desaturation curves of the oil, water, and microemulsion phases. Two extreme wetting conditions are represented by two sets of relative permeability and capillary desaturation parameters and the relative permeability of each gridblock is calculated by interpolating between these two extreme wettability conditions. The interpolation is performed using a scaling factor. Two methods for calculation of the
File Format	PDF HTM / HTML
DOI	10.2118/100081-MS
Alternate Webpage(s)	http://www.pge.utexas.edu/images/pdfs/theses05/fathi.pdf
Alternate Webpage(s)	https://doi.org/10.2118/100081-MS
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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