Geochemistry and Fluid FlowFluid flow, as it applies to geologic media, is the topic of this volume. The range of interest is large; it encompasses the weathering of geologic formations by the action of water, the manner in which certain minerals come to occur in commercial quantities, the fate of chemical contaminants once they enter an aquifer, optimal methods to remove (or at least contain) these contaminants, and ways to improve the recovery of hydrocarbons from reservoirs. While it is impossible to treat all of the applications of geochemical flow in a single volume, it is possible to treat certain features of simplified reactive flow that occur in nearly all applications. Understanding these features will help interpret much more complex flows and providing the basis for this understanding is the goal of this text. This book is a culmination of a research project conducted at The University of Texas at Austin (UT) over the past 20 years. It has also been used as a text in a graduate course at UT on geochemistry and flow, taught by each of the editors over a period of 10 years. The reader will undoubtedly benefit from the knowledge flow that this progression from research project, via classroom, to text represents. |
Contents
Introduction | 1 |
Basic Flow Equations | 13 |
SingleVariable Solutions | 19 |
More On SingleVariable LocalEquilibrium Solutions | 61 |
Multivariable LocalEquilibrium Flows | 85 |
Basic PrecipitationDissolution Flows | 99 |
The Local Structure of PrecipitationDissolution Waves | 127 |
Nonequilibrium PrecipitationDissolution Flows | 141 |
Applications | 165 |
Nomenclature | 191 |
Appendix Stoichiometry and Thermodynamics of Reactive Flow | 199 |
Equilibrium | 207 |
OxidationReduction Reactions | 216 |
Summary | 223 |
Other editions - View all
Geochemistry and Fluid Flow Larry W. Lake,Steven L. Bryant,Aura N. Araque-Martinez Limited preview - 2002 |
Common terms and phrases
apply aqueous phase Araque-Martinez base components behavior bioreactor boundary data C₁ CaCO3 calcite Chap chapter chemical reactions Cmax component concentrations composition concentration profiles constant differential equations dimensionless Dimensionless Distance dimensionless variables dispersion dissolution wave dissolved downstream equilibrium equilibrium constant example Figure flowing concentration flowing phase concentrations fluid flux geochemical flow Gibbs free energy initial conditions injection inlet condition interactions jump conditions Langmuir isotherm MgCO3 NLEA ordinary differential equation oxidation partial differential equations permeable medium pore volume precipitation Precipitation/Dissolution Waves propagation reactive flow reactive transport region II Riemann problem roll-front salinity wave saturation sequence shock simple dissolution problem solid AX solid concentration solid phase solubility product solution sorbed sorbed component sorption isotherm specific velocity stoichiometric coefficients strontium supersaturation thermodynamic Time-distance diagram total concentration traveling wave upstream uranium Walsh diagram zero αξ