This book presents concepts and applications of reservoir engineering principles essential to optimum development of natural gas reservoirs. It is based on courses taught at The University of Tulsa, The Pennsylvania State University, and adult education seminars in the United States and overseas.
The development of a natural gas field always depends on the reservoir and well characteristics as well as the equipment performance. A systems approach is emphasized throughout the book, since change in any component of the field production system will affect the performance of the other components. This book is arranged so that it can be used as a text or reference work for students and practicing engineers, geologists, and managers in the crude oil and natural gas production industry.
Chapter 1 discusses methods of estimating nonassociated, associated, and dissolved gas and abnormally pressured gas reserves. Reserves estimation and performance prediction for gas-condensate reservoirs are treated in Chapter 2. A comprehensive and rigorous treatment of production decline curve analysis is given in Chapter 3.
In Chapters 4 and 5 the theory and application of gas well testing are discussed. Well test analysis is an important subject in reservoir engineering, since it enables us to obtain reservoir parameters that could be used to predict future reservoir performance. Chapter 4 considers deliverability or back-pressure testing of gas wells. Chapter 5 discusses pressure transient analysis for gas wells. Both the pressure-squared technique and the pseudo-pressure function or real gas potential technique are treated and compared.
The systems approach is used to determine optimum gas field development strategies in Chapter 6; examples of reservoir performance techniques and field development patterns are presented. Chapter 7 extends some of the techniques of gas transmisison and gas reservoir engineering to the storage of natural gas.
Much of the material on which this book is based was drawn from the publications of the Society of Petroleum Engineers of the American Institute of Mining, Metallurgical and Petroleum Engineers, the American Gas Association, the Division of Production of the American Petroleum Institute, and the Gas Processors Suppliers Association. Tribute is due to these organizations and also to a host of schools and authors who sponsor programs and have contributed to petroleum literature in various other publications.