scholarly journals Stable and Efficient Time Integration of a Dynamic Pore Network Model for Two-Phase Flow in Porous Media

2018 ◽  
Vol 6 ◽  
Author(s):  
Magnus Aa. Gjennestad ◽  
Morten Vassvik ◽  
Signe Kjelstrup ◽  
Alex Hansen
Keyword(s):  
Porous Media ◽  
Network Model ◽  
Two Phase Flow ◽  
Time Integration ◽  
Pore Network ◽  
Flow In Porous Media ◽  
Pore Network Model ◽  
Phase Flow ◽  
Two Phase ◽  
Dynamic Pore Network

scholarly journals Fluid Meniscus Algorithms for Dynamic Pore-Network Modeling of Immiscible Two-Phase Flow in Porous Media

2021 ◽  
Vol 8 ◽  
Author(s):  
Santanu Sinha ◽  
Magnus Aa. Gjennestad ◽  
Morten Vassvik ◽  
Alex Hansen
Keyword(s):  
Porous Media ◽  
Steady State ◽  
Two Phase Flow ◽  
Pore Network ◽  
Flow In Porous Media ◽  
Pore Network Model ◽  
Phase Flow ◽  
Steady State Flow ◽  
Two Phase ◽  
Dynamic Pore Network

We present in detail a set of algorithms for a dynamic pore-network model of immiscible two-phase flow in porous media to carry out fluid displacements in pores. The algorithms are universal for regular and irregular pore networks in two or three dimensions and can be applied to simulate both drainage displacements and steady-state flow. They execute the mixing of incoming fluids at the network nodes, then distribute them to the outgoing links and perform the coalescence of bubbles. Implementing these algorithms in a dynamic pore-network model, we reproduce some of the fundamental results of transient and steady-state two-phase flow in porous media. For drainage displacements, we show that the model can reproduce the flow patterns corresponding to viscous fingering, capillary fingering and stable displacement by varying the capillary number and viscosity ratio. For steady-state flow, we verify non-linear rheological properties and transition to linear Darcy behavior while increasing the flow rate. Finally we verify the relations between seepage velocities of two-phase flow in porous media considering both disordered regular networks and irregular networks reconstructed from real samples.

Based on the Pore Network Model of CO2-Water-Quartz System Two-Phase Flow Characteristics Study

2014 ◽  
Vol 962-965 ◽  
pp. 1289-1292 ◽  
Author(s):  
Ling Yu Chen ◽  
Yu Liu ◽  
Meiheriayi Mutailipu
Keyword(s):  
Network Model ◽  
Two Phase Flow ◽  
Flow Characteristics ◽  
Pore Network ◽  
Pore Network Model ◽  
Phase Flow ◽  
Saline Aquifer ◽  
Two Phase ◽  
Aquifer Storage ◽  
Relative Permeability Curves

Saline aquifer storage is considered to be one of the main ways to realize CO2 geological sequestration. The purpose of the paper is to research CO2 and water seepage characteristics under the condition of different pressure and diameter of glass sand. First, establish four kinds of sand packed beds pore network model. Secondly, measuring the gas-liquid interfacial tension, contact angle under the condition of 50°C and different pressure (5-20MPa). Finally, using the two-phase flow model, obtain the gas-liquid two-phase relative permeability curves under different conditions. The simulation results of this paper can help to predict the actual saline aquifer storage of CO2 sequestration.

A Dynamic Network Model for Two-Phase Flow in Porous Media

2011 ◽  
Vol 92 (1) ◽  
pp. 145-164 ◽  
Author(s):  
Glenn Tørå ◽  
Pål-Eric Øren ◽  
Alex Hansen
Keyword(s):  
Porous Media ◽  
Network Model ◽  
Two Phase Flow ◽  
Dynamic Network ◽  
Flow In Porous Media ◽  
Phase Flow ◽  
Two Phase ◽  
Dynamic Network Model

scholarly journals Validating the Generalized Pore Network Model Using Micro-CT Images of Two-Phase Flow

2019 ◽  
Vol 130 (2) ◽  
pp. 405-424 ◽  
Author(s):  
Ali Q. Raeini ◽  
Jianhui Yang ◽  
Igor Bondino ◽  
Tom Bultreys ◽  
Martin J. Blunt ◽  
...  
Keyword(s):  
Network Model ◽  
Two Phase Flow ◽  
Pore Network ◽  
Ct Images ◽  
Pore Network Model ◽  
Phase Flow ◽  
Micro Ct ◽  
Two Phase

Simulation of two-phase flow in soils using microscopic pore network model

2014 ◽  
pp. 877-882
Author(s):  
Jay Meegoda ◽  
Shengyan Gao ◽  
Liming Hu ◽  
Pengwei Zhang
Keyword(s):  
Network Model ◽  
Two Phase Flow ◽  
Pore Network ◽  
Pore Network Model ◽  
Phase Flow ◽  
Two Phase

Non-equilibrium effects in capillarity and interfacial area in two-phase flow: dynamic pore-network modelling

2010 ◽  
Vol 655 ◽  
pp. 38-71 ◽  
Author(s):  
V. JOEKAR-NIASAR ◽  
S. M. HASSANIZADEH ◽  
H. K. DAHLE
Keyword(s):  
Porous Media ◽  
Capillary Pressure ◽  
Two Phase Flow ◽  
Interfacial Area ◽  
Pore Network ◽  
Flow In Porous Media ◽  
Phase Flow ◽  
Two Phase ◽  
Specific Interfacial Area ◽  
Non Equilibrium

Current macroscopic theories of two-phase flow in porous media are based on the extended Darcy's law and an algebraic relationship between capillary pressure and saturation. Both of these equations have been challenged in recent years, primarily based on theoretical works using a thermodynamic approach, which have led to new governing equations for two-phase flow in porous media. In these equations, new terms appear related to the fluid–fluid interfacial area and non-equilibrium capillarity effects. Although there has been a growing number of experimental works aimed at investigating the new equations, a full study of their significance has been difficult as some quantities are hard to measure and experiments are costly and time-consuming. In this regard, pore-scale computational tools can play a valuable role. In this paper, we develop a new dynamic pore-network simulator for two-phase flow in porous media, called DYPOSIT. Using this tool, we investigate macroscopic relationships among average capillary pressure, average phase pressures, saturation and specific interfacial area. We provide evidence that at macroscale, average capillary pressure–saturation–interfacial area points fall on a single surface regardless of flow conditions and fluid properties. We demonstrate that the traditional capillary pressure–saturation relationship is not valid under dynamic conditions, as predicted by the theory. Instead, one has to employ the non-equilibrium capillary theory, according to which the fluids pressure difference is a function of the time rate of saturation change. We study the behaviour of non-equilibrium capillarity coefficient, specific interfacial area, and its production rate versus saturation and viscosity ratio.A major feature of our pore-network model is a new computational algorithm, which considers capillary diffusion. Pressure field is calculated for each fluid separately, and saturation is computed in a semi-implicit way. This provides more numerical stability, compared with previous models, especially for unfavourable viscosity ratios and small capillary number values.

scholarly journals Gas-Water Two Phase Flow Simulation Based on Pore Network Model for Reservoir Rocks

2017 ◽  
Vol 142 ◽  
pp. 3214-3219 ◽  
Author(s):  
Meiheriayi Mutailipu ◽  
Yu Liu ◽  
Bohao Wu ◽  
Yongchen Song ◽  
Dayong Wang ◽  
...  
Keyword(s):  
Network Model ◽  
Two Phase Flow ◽  
Flow Simulation ◽  
Pore Network ◽  
Pore Network Model ◽  
Phase Flow ◽  
Two Phase ◽  
Reservoir Rocks ◽  
Simulation Based
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