Numerical Simulation of Reactive Flow in Hot Aquifers SHEMAT and Processing SHEMAT

1 Introduction.- 2 Numerical Simulation of Reactive Flow using SHEMAT.- 2.1 General.- 2.2 Governing Equations.- 2.4 Input / Output.- 2.5 Practical Modeling: Remarks, Explanations and Instructions.- 2.6 Code Verification.- 3 Pre- and Post-Processing with “Processing SHEMAT”.- 3.1 What is Processing SHEMAT?.- 3.2 Modeling Environment.- 3.3 Menu System.- 4 Advanced Features.- 4.1 Chemical Equilibrium Speciation for Brines at High Temperatures and Ionic Strength.- 4.2 Fractal Relation Between Porosity and Permeability: Theory and Verification.- 5 Tutorial for “Processing SHEMAT”.- 5.1 Introduction.- 5.2 Creating a Fluid Flow, Heat Transfer, and Solute Transport Model.- 5.3 Using the Geochemical Reaction Module.- 5.4 Expanding the Model to Three Dimensions.- 6 Applications.- 6.1 Development of a Preferential Flow Path in an Anhydrite Cemented Sandstone: Numerical Simulation of a Core Flooding Experiment.- 6.2 Modeling Flooding of a Sandstone Core with Reactive Transport and Subsequent Changes in Porosity and Permeability.- 6.3 Injection Well with Reaction Kinetics.- 6.4 Magmatic Intrusions in Long Valley Caldera.- 6.5 Rhine Graben Cross Section.- 6.6 Thermal Transect of Continental Lithosphere in Canada.- 6.7 Waiwera Coastal Geothermal System.- References.