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REVIEWS

Geochemistry and Fluid Flow. Developments in Geochemistry no. 7. LARRY W. LAKE, STEVEN L. BRYANT, AND AURA N. ARAQUE-MARTINEZ, EDITORS. Elsevier. 226 p. 2002. Price: $88.00

This 226-page treatise analyzes how waves of chemical change propagate though porous media as the result of single phase, isothermal, one-dimensional, pore fluid flow. The solutions presented are all analytical, which is unusual in the computer age. But analytic solutions are uniquely able to provide reliable insight. As the authors state, no numerical simulator currently comes with an "insight module," and analytic solutions provide a reference that numerical solutions must duplicate. The book is the product of 20 years of research and 10 graduate theses, and is the basis for an advanced graduate course on geochemistry at the University of Texas at Austin.

For many reasons, this is a wonderful book. It spans the mathematics of coordinate and reference frame transformations, shock fronts, Langmuir isotherms, local equilibrium, kinetically controlled reaction rates, and the fields of reservoir engineering and geology. It provides a unique introduction to the chemical interaction between fluid and solid phases and explains the mathematical and graphical descriptions that have been developed in a lucid fashion.

A short introductory chapter is followed by a six-page-long chapter that derives the conservation equations for chemical change in both the solid and liquid phases. An area term makes these equations applicable to linear, radial, or spherical flow. Auxiliary conditions and boundary data (initial and boundary conditions) are succinctly summarized.

The third chapter solves for chemical waves involving one reactive solution component, first assuming local chemical equilibrium (LEA condition) as specified by the Langmuir . . . [Full Text of this Article]