scholarly journals Mechanistic Study of Wettability Alteration Using Surfactants with Applications in Naturally Fractured Reservoirs

Langmuir ◽  
2008 ◽  
Vol 24 (24) ◽  
pp. 14099-14107 ◽  
Author(s):  
Mehdi Salehi ◽  
Stephen J. Johnson ◽  
Jenn-Tai Liang
Keyword(s):  
Fractured Reservoirs ◽  
Naturally Fractured Reservoirs ◽  
Wettability Alteration ◽  
Mechanistic Study ◽  
Naturally Fractured

Numerical Investigation of Wettability Effects on Two-Phase Flow in Naturally Fractured Reservoirs Using Complex System Modelling Platform

2021 ◽  
Author(s):  
Mohammad Sedaghat ◽  
Hossein Dashti
Keyword(s):  
Complex System ◽  
Relative Permeability ◽  
Oil Recovery ◽  
Fractured Reservoirs ◽  
Naturally Fractured Reservoirs ◽  
Wettability Alteration ◽  
System Modelling ◽  
Naturally Fractured ◽  
Relative Permeability Curves

Abstract Wettability is an essential component of reservoir characterization and plays a crucial role in understanding the dominant mechanisms in enhancing recovery from oil reservoirs. Wettability affects oil recovery by changing (drainage and imbibition) capillary pressure and relative permeability curves. This paper aims to investigate the role of wettability in matrix-fracture fluid transfer and oil recovery in naturally fractured reservoirs. Two experimental micromodels and one geological outcrop model were selected for this study. Three relative permeability and capillary pressure curves were assigned to study the role of matrix wettability. Linear relative permeability curves were given to the fractures. A complex system modelling platform (CSMP++) has been used to simulate water and polymer flooding in different wettability conditions. Comparing the micromodel data, CSMP++ and Eclipse validated and verified CSMP++. Based on the results, the effect of wettability alteration during water flooding is stronger than in polymer flooding. In addition, higher matrix-to-fracture permeability ratio makes wettability alteration more effective. The results of this study revealed that although an increase in flow rate decreases oil recovery in water-wet medium, it is independent of flow rate in the oil-wet system. Visualized data indicated that displacement mechanisms are different in oil-wet, mixed-wet and water-wet media. Earlier fracture breakthrough, later matrix breakthrough and generation and swelling of displacing phase at locations with high horizontal permeability contrast are the most important features of enhanced oil recovery in naturally fractured oil-wet rocks.

Modeling Wettability Alteration By Surfactants in Naturally Fractured Reservoirs

2009 ◽  
Vol 12 (03) ◽  
pp. 361-370 ◽  
Author(s):  
Mojdeh Delshad ◽  
Nariman Fathi Najafabadi ◽  
Glen Anderson ◽  
Gary A. Pope ◽  
Kamy Sepehrnoori
Keyword(s):  
Fractured Reservoirs ◽  
Naturally Fractured Reservoirs ◽  
Wettability Alteration ◽  
Naturally Fractured

Modeling Wettability Alteration in Naturally Fractured Reservoirs

2006 ◽  
Author(s):  
Mojdeh Delshad ◽  
Nariman Fathi Najafabadi ◽  
Glen Allen Anderson ◽  
Gary Arnold Pope ◽  
Kamy Sepehrnoori
Keyword(s):  
Fractured Reservoirs ◽  
Naturally Fractured Reservoirs ◽  
Wettability Alteration ◽  
Naturally Fractured
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