Compositional Grading in Oil and Gas Reservoirs

Rogerio Oliveira Esposito, Pedro Henrique Rodrigues Alijó, Jose Antonio Scilipoti, Frederico Wanderley Tavares

• Publisher: Gulf Professional Publishing
• Year: 2017
• Print ISBN: 9780128124529
• eBook ISBN: 9780128124536
• Topic: Physical Sciences
• Subtopic: Geology & Earth Sciences

Compositional Grading in Oil and Gas Reservoirs offers instruction, examples, and case studies on how to answer the challenges of modeling a compositional gradient subject. Starting with the basics on PVT analysis, applied thermodynamics, and full derivations of irreversible thermodynamic-based equations, this critical reference explains gravity-modified equations to be applied to reservoirs, enabling engineers to obtain fluid composition at any point of the reservoir from measured data to create a stronger model calibration.Once model-parameters are re-estimated, new sensibility can be acquired for more accurate modeling of composition, aiding engineers with stronger production curves, reserve estimations, and design of future development strategies. Multiple examples and case studies are included to show the application of the theory from very simple to more complex systems, such as actual reservoirs influenced by thermal diffusion and gravity simultaneously.Other example include a layer for which asphaltene precipitation takes place in the reservoir and three –phase flash algorithms for liquid-liquid-vapor equilibrium calculations, detailing the techniques necessary to ensure convergence.The book combines practical studies with the importance in modeling more complex phenomena, filling a gap for current and upcoming reservoir engineers to expand on solutions and make sense of their reservoir's output results.- Presents a deeper level of detail on the heterogeneity composition and thermo-physical properties of petroleum fluids in the reservoir- Includes tactics on how to Increase reliability of reservoir simulation initialization, with practice examples at the end of each chapter- Helps readers make sense of compositional grading, with coverage on both theory and application that fulfill a gap in research on reservoir simulation

Table of contents

• Cover image
• Title page
• Table of Contents
• Copyright
• Biography
• Prefaces
• Acknowledgments
• Introduction
• Chapter 1. Reservoir Fluids and PVT Analysis
• Chapter 2. Phase Equilibrium Thermodynamics
• Chapter 3. Phase Equilibrium Under the Influence of the Gravitational Field
• Chapter 4. Irreversible Thermodynamics Applied to Reservoir Engineering
• Chapter 5. Classic Examples From Literature
• Chapter 6. Case Studies
• Chapter 7. The Influence of Molecular Association
• Chapter 8. General Comments and Perspectives
• Appendix A. Transport Equations Derived from Irreversible Thermodynamics
• Appendix B. Heat of Transport
• Appendix C. Calculation of Molecular Diffusion Coefficient
• Appendix D. Another Approach for Heat of Transport
• Appendix E. Parameter Estimation
• Appendix F. Fundamentals of Statistical Thermodynamics and Perturbation Theory
• Appendix G. Excercises Solutions
• Index