Affordable Access

Access to the full text

Porosity change in heterogeneous and isotropic limestone coastal aquifer during mixing of seawater and freshwater

Authors
  • Laabidi, Ezzeddine1
  • Ben Refifa, Marwen1
  • Bouhlila, Rachida1
  • 1 University of Tunis El Manar (UTM), Bp 37, Le Belvédère, Tunis, 1002, Tunisia , Tunis (Tunisia)
Type
Published Article
Journal
Carbonates and Evaporites
Publisher
Springer Berlin Heidelberg
Publication Date
Jun 29, 2020
Volume
35
Issue
3
Identifiers
DOI: 10.1007/s13146-020-00608-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

Calcite dissolution, porosity development are strongly influenced by mixing phenomenon, fluid density and heterogeneity (variability of the hydraulic proprieties). This study presents an approach for calculating porosity change in a heterogeneous porous media during mixing of seawater and freshwater. The proposed approach is based on the Phillip’s analytical solution and is determined by five main steps: (1) Generate a random K-field, (2) Calculate the flow and transport of the heterogeneous porous media, (3) Evaluate the dispersivity coefficient results of the heterogeneity aspect, (4) Evaluate the dissolution capacity of calcite during mixing of two solutions and (5) calculate the porosity change. This approach takes into account the effect of the aquifer heterogeneity on the dispersivity and is applied to simulate the effect of calcite dissolution on the porosity development in a heterogeneous idealized aquifer during seawater intrusion. Results presented in this work are preliminary to assess the effect of heterogeneity on the geochemical reaction during mixing.

Report this publication

Statistics

Seen <100 times