AN EQUIVALENT CONTINUUM APPROACH FOR MODELING TWO-PHASE FLOW IN FRACTURED-VUGGY MEDIA

2017 ◽  
Vol 15 (1) ◽  
pp. 79-98 ◽  
Author(s):  
Yajun Li ◽  
Jun Yao ◽  
Yanchao Li ◽  
Congbin Yin ◽  
Bin Pan ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Continuum Approach ◽  
Two Phase ◽  
Equivalent Continuum ◽  
Equivalent Continuum Approach

Nonlinear Upscaling of Two-Phase Flow Using Non-Local Multi-Continuum Approach

2019 ◽  
Author(s):  
Wing T. Leung ◽  
Eric T. Chung ◽  
Yalchin Efendiev ◽  
Maria Vasilyeva ◽  
Mary Wheeler
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Continuum Approach ◽  
Two Phase ◽  
Non Local

An Efficient Numerical Model for Immiscible Two-Phase Flow in Fractured Karst Reservoirs

2013 ◽  
Vol 13 (2) ◽  
pp. 540-558 ◽  
Author(s):  
Zhao-Qin Huang ◽  
Jun Yao ◽  
Yue-Ying Wang
Keyword(s):  
Numerical Model ◽  
Two Phase Flow ◽  
Mixed Finite Element ◽  
Mixed Finite Element Method ◽  
Water Flooding ◽  
Homogenization Theory ◽  
Absolute Permeability ◽  
Phase Flow ◽  
Two Phase ◽  
Equivalent Continuum

AbstractNumerical simulation of two-phase flow in fractured karst reservoirs is still a challenging issue. The triple-porosity model is the major approach up to now. However, the triple-continuum assumption in this model is unacceptable for many cases. In the present work, an efficient numerical model has been developed for immiscible two-phase flow in fractured karst reservoirs based on the idea of equivalent continuum representation. First, based on the discrete fracture-vug model and homogenization theory, the effective absolute permeability tensors for each grid blocks are calculated. And then an analytical procedure to obtain a pseudo relative permeability curves for a grid block containing fractures and cavities has been successfully implemented. Next, a full-tensor simulator has been designed based on a hybrid numerical method (combining mixed finite element method and finite volume method). A simple fracture system has been used to demonstrate the validity of our method. At last, we have used the fracture and cavity statistics data from TAHE outcrops in west China, effective permeability values and other parameters from our code, and an equivalent continuum simulator to calculate the water flooding profiles for more realistic systems.

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