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Elsevier

Elsevier Science

  • Numerical Methods for Transport and Hydraulic Processes

    • 1st Edition
    • Volume 2
    • English

  • Fundamentals of Gas Reservoir Engineering

    • 1st Edition
    • Volume 23
    • J. Hagoort
    • English
    Gas reservoir engineering is the branch of reservoir engineering that deals exclusively with reservoirs of non-associated gas. The prime purpose of reservoir engineering is the formulation of development and production plans that will result in maximum recovery for a given set of economic, environmental and technical constraints. This is not a one-time activity but needs continual updating throughout the production life of a reservoir.The objective of this book is to bring together the fundamentals of gas reservoir engineering in a coherent and systematic manner. It is intended both for students who are new to the subject and practitioners, who may use this book as a reference and refresher. Each chapter can be read independently of the others and includes several, completely worked exercises. These exercises are an integral part of the book; they not only illustrate the theory but also show how to apply the theory to practical problems.Chapters 2, 3 and 4 are concerned with the basic physical properties of reservoirs and natural gas fluids, insofar as of relevance to gas reservoir engineering. Chapter 5 deals with the volumetric estimation of hydrocarbon fluids in-place and the recoverable hydrocarbon reserves of gas reservoirs. Chapter 6 presents the material balance method, a classic method for the analysis of reservoir performance based on the Law of Conservation of Mass. Chapters 7-10 discuss various aspects of the flow of natural gas in the reservoir and the wellbore: single phase flow in porous and permeable media; gaswell testing methods based on single-phase flow principles; the mechanics of gas flow in the wellbore; the problem of water coning, the production of water along with the gas in gas reservoirs with underlaying bottom water. Chapter 11 discusses natural depletion, the common development option for dry and wet gas reservoirs. The development of gas-condensate reservoirs by gas injection is treated in Chapter 12.Appendix A lists the commonly used units in gas reservoir engineering, along with their conversion factors. Appendix B includes some special physical and mathematical constants that are of particular interest in gas reservoir engineering. Finally, Appendix C contains the physical properties of some common natural-gas components.

  • Modelling Surface and Sub-Surface Flows

    • 1st Edition
    • Volume 35
    • English

  • Quantitative Gas Chromatography for Laboratory Analyses and On-Line Process Control

    • 1st Edition
    • Volume 42
    • G. Guiochon + 1 more
    • English
    Here is an invaluable new book on quantitative gas chromatography which explains how the method can - or should - be used for accurate and precise analysis. Gas chromatography is firmly established as one of the few major methods for the quantitative analysis of complex mixtures. It is fast, accurate and inexpensive, with a broad range of applications. It has however become very complex and involved: over 200 stationary phases, more than 10 detector principles and several very different column types are available from among the catalogs of over 100 manufacturers and major retailers. The progressive changes in the nature of gas chromatography have created new needs for information which are not satisfied by the literature presently available.This book provides a complete discussion of all the problems involved in the achievement of quantitative analysis by gas chromatography, whether in the research laboratory, in the routine analysis laboratory or in process control. For this reason the presentation of theoretical concepts has been limited to the essential, while extensive explanations have been devoted to the various steps involved in the derivation of precise and accurate data. This starts with the selection of the instrumentation and column, continues with the choice of optimum experimental conditions, then calibration and ends with the use of correct procedures for data acquisition and calculations. Finally, there is almost always a way to reduce errors and an entire chapter deals with this single issue. Numerous relevant examples are presented.The first part of the book presents the theoretical background, simple enough to be understood by all analytical chemists, but still complete and up-to-date. It discusses the problems of flow dynamics, retention and band broadening. The changes in band profile associated with column overloading are explained without much recourse to mathematics. The second part describes the gas chromatograph and discusses the properties of each of its parts: gas flow and pressure controller sampling system, oven, column switching valves, detectors. The different implementations, their advantages and drawbacks are discussed and compared. In addition, three chapters present packed column technology, open tubular column technology and some sophisticated new phase systems, respectively. The new phase systems described use adsorbents, modified by coating or grafting organic phase, and carrier gases containing vapors which are sorbed by the stationary phase and modify it, such as steam. The third part discusses the applications in qualitative and quantitative analysis. Calibration, peak integration, sources of errors arising from the various parts of the instrument as well as from the measurement process itself are carefully described in four detailed chapters. Methods to carry out accurate and precise analysis are presented. A last chapter is devoted to process control analysis and gives a number of detailed examples of applications. A lexicon explaining the most important chromatographic terms and a detailed index complete the book.This is a book which no chemical analyst should be without. It should be on the library shelf of all universities, instrument companies and any laboratory and plant where gas chromatography is used.

  • Physics of Solid Surfaces 1987

    • 1st Edition
    • Volume 40
    • J. Koukal
    • English
    The Fourth Symposium on Surface Physics was held to summarize important new developments in theoretical and experimental studies of solid surfaces. In recent years, the physical and chemical properties of surfaces and interfaces have been extensively investigated. This meeting was mainly devoted to the crystallographic and electron structure aspects of surface physics, and to a detailed understanding of the electronic, structural and magnetic properties of clean surfaces, and adsorbed aggregates on surfaces and interfaces. New and newly-refined techniques were presented and discussed.This proceedings volume comprises three main parts: the first contains the invited lectures indicating the main topics of the meeting; the second and third parts summarize the oral papers and posters in a more condensed form.

  • Methods of Cell Separation

    • 1st Edition
    • Volume 18
    • P.T. Sharpe
    • English
    Methods of Cell Separation brings to the attention of researchers at all levels the variety of methods available for separating viable populations of cells. Methods are grouped into 3 categories based on the criteria of separation, namely; size or density; non-specific surface properties; and specific surface properties. The principle of each method is described together with general and, where possible, specific protocols for conducting cell separation experiments.A central theme of the book is the separation of populations of blood lymphocytes which is used as an example for each method.Methods of Cell Separation is distinguished by three powerful assets: descriptions of the majority of cell separation methods currently being used; details of the experimental procedures involved in each method; and comparisons of the different methods for separating cell populations with particular reference to blood lymphocytes.An excellent addition to a distinguished series, and extremely useful as a laboratory manual.

  • Catalysis 1987

    • 1st Edition
    • Volume 38
    • J.W. Ward
    • English
    Almost all aspects of heterogeneous catalysis are covered in this proceedings volume: papers on surface science and modern spectroscopic techniques provide a particularly extensive coverage of catalyst characterization, while other papers update the broader area of major types of catalysts, such as oxides, sulfides, supported metals and zeolites as well as presenting new developments.Major catalytic reactions are covered including those involving carbon monoxide hydrogenation, emission control and hydrotreating. The current important area of octane enhancement catalysts and processes and important industrial concepts in hydrotreating are dealt with, including new aspects of shape-selective catalysis. The applied engineering topics of reactions engineering and catalyst deactivation are also updated. New concepts in theoretical catalysis are presented and several new homogeneous catalyst systems are reported.The book concludes with four illuminating papers on the future reactions of catalysis as applied to energy processing, chemicals production and, in particular, to biocatalysis on a large scale.Many of the contributors are leaders in their fields and, with almost 1,000 pages and 85 papers, this book provides an enormous amount of information which will be extremely valuable to catalyst and related practitioner, whether fundamentalists or highly applied, who wish to evaluate current findings in their fields.

  • Aqueous Size-Exclusion Chromatography

    • 1st Edition
    • Volume 40
    • P.L. Dubin
    • English
    The rapid development of new packings for aqueous size-exclusion chromatography has revolutionized this field. High resolution non-adsorptive columns now make possible the efficient separation of proteins and the rapid and precise determination of the molecular weight distribution of synthetic polymers. This technology is also being applied to the separation of small ions, the characterization of associating systems, and the measurement of branching. At the same time, fundamental studies are elucidating the mechanisms of the various chromatographicproce... developments in principles and applications are assembled for the first time in this book. Fundamental issues are dealt with: the roles of pore structure and macromolecular dimensions, hydrophobic and electrostatic effects, and the determination and control of column efficiency. High-performance packings based on derivatized silica are reviewed in detail. Special techniques are thoroughly described, including SEC/LALLS, inverse exclusion chromatography, and frontal zone chromatography. Attention is focussed on special applications of size-exclusion methods, such as the characterization of micelles, separations of inorganic ions, and Hummel-Dreyer and related methods for equilibrium systems. Protein chromatography is dealt with in both dedicated sections and throughout the book as a whole.This is a particularly comprehensive and authoritative work - all the contributions review broad topics of general significance and the authors are of high repute. The material will be of special value for the characterization of synthetic water-soluble polymers, especially polyelectrolytes. Biochemists will find fundamental and practical guidance on protein separations. Researchers confronted with solutes that exhibit complex chromatographic behavior, such as humic acids, aggregating proteins, and micelles should find the contents of this volume illuminating.

  • Small-Scale Turbulence and Mixing in the Ocean

    • 1st Edition
    • Volume 46
    • J.C.J. Nihoul + 1 more
    • English
    This volume contains the proceedings of the 19th International Liège Colloquium on Ocean Hydrodynamics, the programme of which focused on the relationships between small-scale mixing and large-scale features, transports and processes. The presentation of papers on various methods of parameterization of small-scale turbulent mixing for numerical ocean models was particularly encouraged and this resulted in more than a third of the papers presented at the Colloquium dealing in one way or another with the parameterization problems; many of these papers demonstrate the direct results of modelling. These proportions are well reflected in this volume of proceedings and thus emphasize once more the importance of small-scale turbulence research for such vital practical applications as ocean modelling and forecasting.

  • Theory of Difference Equations Numerical Methods and Applications by V Lakshmikantham and D Trigiante

    • 1st Edition
    • Volume 181
    • Lakshmikantham + 1 more
    • English
    In this book, we study theoretical and practical aspects of computing methods for mathematical modelling of nonlinear systems. A number of computing techniques are considered, such as methods of operator approximation with any given accuracy; operator interpolation techniques including a non-Lagrange interpolation; methods of system representation subject to constraints associated with concepts of causality, memory and stationarity; methods of system representation with an accuracy that is the best within a given class of models; methods of covariance matrix estimation;methods for low-rank matrix approximations; hybrid methods based on a combination of iterative procedures and best operator approximation; andmethods for information compression and filtering under condition that a filter model should satisfy restrictions associated with causality and different types of memory.As a result, the book represents a blend of new methods in general computational analysis,and specific, but also generic, techniques for study of systems theory ant its particularbranches, such as optimal filtering and information compression.

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