Numerical Modelling of Saturated Porous Media Subjected to Dynamic Loading

1996 ◽  
pp. 143-156
Author(s):  
H. Modaressi
Keyword(s):  
Porous Media ◽  
Numerical Modelling ◽  
Dynamic Loading ◽  
Saturated Porous Media

Numerical Modelling of the Fate of Residual Immiscible Fluids in Saturated Porous Media

1991 ◽  
Vol 24 (11) ◽  
pp. 261-270 ◽  
Author(s):  
Nilson Guiguer
Keyword(s):  
Porous Media ◽  
Numerical Modelling ◽  
Groundwater Contamination ◽  
Mathematical Formulation ◽  
Immiscible Fluids ◽  
Saturated Porous Media ◽  
Saturated Zone ◽  
Contamination Source ◽  
Immiscible Liquids ◽  
Plume Migration

In the subsurface, small but significant quantities of chemicals will be dissolved by groundwater in contact with Non-aqueous Phase Liquids (NAPL) and can result in groundwater contamination. The rate of NAPL dissolution will influence the magnitude of dissolved chemical concentrations in groundwater and the length of time that NAPL sources may cause groundwater contamination. A suitable understanding of NAPL fate in the subsoil is required in order to evaluate the sources of existing dissolved chemical plumes, to allow predictions of future plume migration and to evaluate the effectiveness of dissolved plume purging in situations where NAPL remains in the subsurface. In this study the mathematical formulation necessary to represent the behavior of NAPL in the saturated zone is presented. The results of the simulation of a trichloroethene spill demonstrates that immiscible liquids can act as a continuous contamination source in an aquifer for many decades, even in small quantities.

COUPLING FINITE ELEMENTS APPLIED TO HYDRAULIC ANALYSIS IN SATURATED POROUS MEDIA

2019 ◽  
Author(s):  
Murilo Camargo ◽  
Pedro Cleto ◽  
Eduardo Alexandre Rodrigues ◽  
Heber Agnelo Antonel Fabbri ◽  
Osvaldo Luís Manzoli
Keyword(s):  
Porous Media ◽  
Finite Elements ◽  
Saturated Porous Media ◽  
Hydraulic Analysis

scholarly journals Experimental study of the supercritical CO 2 diffusion coefficient in porous media under reservoir conditions

2019 ◽  
Vol 6 (6) ◽  
pp. 181902 ◽  
Author(s):  
Junchen Lv ◽  
Yuan Chi ◽  
Changzhong Zhao ◽  
Yi Zhang ◽  
Hailin Mu
Keyword(s):  
Porous Media ◽  
Diffusion Coefficient ◽  
Oil Recovery ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Elevated Pressure ◽  
Experimental Results ◽  
Saturated Porous Media ◽  
Reservoir Conditions ◽  
The Impact

Reliable measurement of the CO 2 diffusion coefficient in consolidated oil-saturated porous media is critical for the design and performance of CO 2 -enhanced oil recovery (EOR) and carbon capture and storage (CCS) projects. A thorough experimental investigation of the supercritical CO 2 diffusion in n -decane-saturated Berea cores with permeabilities of 50 and 100 mD was conducted in this study at elevated pressure (10–25 MPa) and temperature (333.15–373.15 K), which simulated actual reservoir conditions. The supercritical CO 2 diffusion coefficients in the Berea cores were calculated by a model appropriate for diffusion in porous media based on Fick's Law. The results show that the supercritical CO 2 diffusion coefficient increases as the pressure, temperature and permeability increase. The supercritical CO 2 diffusion coefficient first increases slowly at 10 MPa and then grows significantly with increasing pressure. The impact of the pressure decreases at elevated temperature. The effect of permeability remains steady despite the temperature change during the experiments. The effect of gas state and porous media on the supercritical CO 2 diffusion coefficient was further discussed by comparing the results of this study with previous study. Based on the experimental results, an empirical correlation for supercritical CO 2 diffusion coefficient in n -decane-saturated porous media was developed. The experimental results contribute to the study of supercritical CO 2 diffusion in compact porous media.

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