Nuclear magnetic resonance petrophysical and logging applications / Применение ядерного магнитного резонанса в петрофизике и каротаже

The applications of nuclear magnetic resonance (NMR) to petroleum expb ration and production have become more and more important in recent years. The development of the NMR logging technology and the NMR applications to core analysis and formation evaluation have been very rapid and extensive. Part of this book was a collection of many lecture notes written over the years for Chevron in-house training purposes. As we started writing, the scope of the book gradually broadened.It covers a wide range of NMR related petrophysical measurements on cores including brief descriptions of recent applications of Magic Angle Spinning (MAS) NMR and the basics of NMR imaging of cores. In the discussion of NMR logging applications, we outline various schemes of using NMR logs to obtain necessary information for formation evaluation, such as irreducible water saturation determination, hydrocarbon typing, oil viscosity estimation, permeability prediction, etc. We discuss mainly the principles of these applications using schematic diagrams for illustration.

We believe that a unique aspect of the book is that it provides a detailed account of the basic principles of spin diffusion and relaxation in porous media. Readers who are interested in a rigorous treatment of the subject are referred to Chapter 7, where both the eigenfunction and random walk methods are described. For a less mathematical treatment, readers are referred to Chapter 4. The basic physics of nuclear magnetic resonance, as well as its relaxation behaviors, are described in Chapter 2. <...>