Results 21 to 30 of about 131,979,281 (269)

Nanogel formation of polymer solutions flowing through porous media [PDF]

open access: yes, 2012
A gelation process was seen to occur when Boger fluids made from aqueous solutions of polyacrylamide (PAA) and NaCl flowed through porous media with certain characteristics.
Campo-DeaƱo, Laura   +4 more
core   +4 more sources

A Pore-Scale Investigation of Residual Oil Distributions and Enhanced Oil Recovery Methods

open access: yesEnergies, 2019
Water flooding is an economic method commonly used in secondary recovery, but a large quantity of crude oil is still trapped in reservoirs after water flooding.
Yaohao Guo   +7 more
doaj   +1 more source

A two-pressure model for slightly compressible single phase flow in bi-structured porous media [PDF]

open access: yes, 2013
Problems involving flow in porous media are ubiquitous in many natural and engineered systems. Mathematical modeling of such systems often relies on homogenization of pore-scale equations and macroscale continuum descriptions.
Davit, Yohan   +2 more
core   +1 more source

Research on Stress Sensitivity of Fractured Carbonate Reservoirs Based on CT Technology

open access: yesEnergies, 2017
Fracture aperture change under stress has long been considered as one of primary causes of stress sensitivity of fractured gas reservoirs. However, little is known about the evolution of the morphology of fracture apertures on flow property in loading ...
Yongfei Yang   +7 more
doaj   +1 more source

Evolution of Water Retention Characteristics in Bio-Geochemically Altered Unsaturated Soils: A Pore-Scale Study [PDF]

open access: yesE3S Web of Conferences, 2023
Biogeochemical processes in subsurface can dramatically alter the behavior of multiphase fluid flow and the hydrodynamics of porous media by bio-clogging.
Nassiri Sina   +2 more
doaj   +1 more source

The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models

open access: yesEnergies, 2019
In this paper, the influence of micro-fractures on the flow of tight reservoirs is studied on the microscopic scale. Three-dimensional digital cores of fractured tight sandstone with varying fracture apertures, lengths, and dip angles are constructed ...
Hai Sun   +8 more
doaj   +1 more source

Recent Advances in Multiscale Petrophysics Characterization and Multiphase Flow in Unconventional Reservoirs

open access: yesEnergies, 2022
Petrophysics in unconventional reservoirs, especially multiscale characterization and multiphase flow, is relevant to multi-disciplinary porous media research (e [...]
Jianchao Cai, Reza Rezaee, Victor Calo
doaj   +1 more source

Algebraic Multigrid Preconditioners for Multiphase Flow in Porous Media [PDF]

open access: yesSIAM Journal on Scientific Computing, 2017
Multiphase flow is a critical process in a wide range of applications, including carbon sequestration, contaminant remediation, and groundwater management. Typically, this process is modeled by a nonlinear system of partial differential equations derived by considering the mass conservation of each phase (e.g., oil, water), along with constitutive laws
Quan M. Bui   +2 more
openaire   +4 more sources

Multiphase flow in porous media [PDF]

open access: yesJournal of Fluid Mechanics, 2013
AbstractMultiphase flows in porous media represent fluid dynamics problems of great complexity involving a wide range of physical phenomena. These flows have attracted the attention of an impressive group of renowned researchers and have spawned a number of classic problems in fluid dynamics.
openaire   +2 more sources

Coupling of two-phase flow in fractured-vuggy reservoir with filling medium

open access: yesOpen Physics, 2017
Caves in fractured-vuggy reservoir usually contain lots of filling medium, so the two-phase flow in formations is the coupling of free flow and porous flow, and that usually leads to low oil recovery.
Xie Haojun   +4 more
doaj   +1 more source

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