Well Test Analysis for Fractured Reservoir Evaluation - 1st Edition - ISBN: 9780444886910, 9780080868851

Well Test Analysis for Fractured Reservoir Evaluation, Volume 27

1st Edition

Authors: G. Da Prat
eBook ISBN: 9780080868851
Imprint: Elsevier Science
Published Date: 19th November 1990
Page Count: 209
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Table of Contents

1. Well Test Analysis. Introduction. Wellbore storage and skin effect. Outer boundaries and discontinuities. Well test interpretation. Partial differential equation. Dimensionless pressure solutions. Infinite reservoir. Type-curve matching techniques. Semi-logarithmic analysis. Example of an interference test. Identification of flow regimes. Superposition principle/build-up testing. Pressure derivative analysis. Interpretation using simultaneously pressure and sand face flow rate data. Convolution. Deconvolution. Examples of application. Wellbore storage deconvolution. Nomenclature. References. 2. Naturally Fractured Reservoirs. Introduction. Reservoir Characteristics. Producing from a fractured reservoir. Well test analysis. Introduction. Models available for interpretation. Comparison of existing models for well test interpretation. Nomenclature. References. 3. Transient Pressure Analysis at Constant Rate Production. Introduction. Partial differential equations. Dimensionless pressure solutions. Infinite outer boundary. Closed outer boundary. Type curves. Examples of application. Nomenclature. References. 4. Pressure Build-Up Analysis. Introduction. Horner plot. Pollard plot. Extended muskat method. Example of application. Field application. Practical procedure to analyze build-up data coming from a fractured formation - field case. Nomenclature. References. 5. Interference Analysis-Constant Flowrate Production. Introduction. Matrix and fracture pressure distribution. Interference analysis using type curves. Interference example. Examples of field application. Nomenclature. References. 6. Transient Rate Analysis-Constant Pressure Production. Introduction. Partial differential equations. Method of solution. Transient rate solutions. Infinite outer boundary. Closed outer boundary. Short-time analysis. Long-time analysis. Production forecast analysis. Decline curve analysis using type curves. Type curve matching example. Estimation of &ugr;, &lgr;, reD and S from decline curves. Nomenclature. References. 7. Interference Analysis-Constant Pressure Production. Introduction. Matrix and fissured pressure solutions. Practical considerations regarding the use of type curves. Nomenclature. References. 8. Computer Aided Interpretation. Introduction. Computer program. Computer assisted interpretation. Modified bessel functions. Generation of solutions-example. Nomenclature. References. 9. Use of Pressure Transient Test to Determine Fractured System Extension and Fracture Trends. Introduction. Fractured system extension determination. Fracture trends from interference tests. Nomenclature. References. 10. Test Design for Fractured Reservoirs. Introduction. Test design for fractured reservoirs. Build-up tests. Interference tests. Production decline test. Nomenclature. References.


The main purpose of this book is to provide the reader with a basic understanding of the behaviour of fractured reservoirs, using evaluation techniques based on processing pressure and flow-rate data resulting from production testing.

It covers the fundamental reservoir engineering principles involved in the analysis of fluid flow through fractured reservoirs, the application of existing models to field cases, and the evaluation and description of reservoirs, based on processed data from pressure and production tests. The author also discusses production decline analysis, the understanding of which is a key factor influencing completion or abandonment of a well or even a field.

The theoretical concepts are presented as clearly and simply as possible in order to aid comprehension. The book is thus suitable for training and educational purposes, and will help the reader who is unfamiliar with the subject acquire the necessary skills for successful interpretation and analysis of field data.

One of the most important features of the book is that it fills the gap between field operations and research, in regard to proper management of reservoirs. The book also contains a computer program (FORTRAN language) which can be incorporated in existing software designed for reservoir evaluation; type curves generation, test design and interpretation, can be achieved by using this program.

Petroleum engineers, reservoir engineers, petroleum geologists, research engineers and students in these fields, will be interested in this book as a reference source. It can also be used as a text book for training production and reservoir engineering professionals. It should be available in university and oil company libraries.


No. of pages:
© Elsevier Science 1990
Elsevier Science
eBook ISBN:


@qu:...very useful for all petroleum engineers working in industry and academia...This treatise must be present in all petroleum engineering and geology libraries. @source:Journal of Petroleum Science and Engineerng

About the Authors

G. Da Prat Author

Affiliations and Expertise

Halliburton Reservoir Service, Caracas, Venezuela