Well Test Analysis for Multilayered Reservoirs with Formation Crossflow

The “Well Test Analysis for Multilayered Reservoirs with Formation Crossflow” Book introduces the fundamentals of well test analysis of a multilayered reservoir with formation crossflow. The book examines how reservoir parameters impact wellbore pressure and flow rate. It establishes a proper method to analyze well test data, enhancing determinations of reservoir parameters for each layer.

Focusing on multilayer models for data analysis, this reference explains the reasons for the existence of single-phase crossflow in multilayer reservoirs, exploring methods to establish them and presenting practical applications to utilize and implement for today’s more complex reservoirs.

Aiding in better well testing operations and models, this book of “Well Test Analysis for Multilayered Reservoirs with Formation Crossflow”is a one-stop solution for today’s reservoir and production engineer, helping them understand every layer of their reservoir.

Contents

• Chapter 1 – Semipermeable Wall Model of a Multilayer Reservoir with Crossflow
• Chapter 2 – Single-Phase Fluid Flow in a Two-Layer Reservoir with Significant Crossflow
• Chapter 3 – Pressure Transients and Crossflow Caused by Diffusivities in Multilayer Reservoirs
• Chapter 4 – Crossflow Behavior and the Determination Reservoir Parameters by Drawdown Tests in Multilayer Reservoirs
• Chapter 5 – Determination of Total Productivity by a Constant Wellbore Pressure Flow Test and the Crossflow Behavior in Multilayer Reservoirs
• Chapter 6 – Determination of Individual Layer Properties by Layer-by-Layer Well Tests in Multilayer Reservoirs with Crossflow
• Chapter 7 – Determination of Parameters for Individual Layers by Transient Well Tests in Multilayer Reservoirs
• Chapter 8 – Interpretation Theory for Vertical Interference Testing Across a Low-Permeability Zone
• Chapter 9 – Unsteady Crossflow Model for Leaky Vertical Interference Testing Across a Low-Permeability Zone
• Chapter 10 – Material Balance Equation of Multilayer Gas Reservoir
• Chapter 11 – Computer-Aided Well Test Design and Well Test Analysis of Layered Reservoirs
• Nomenclature
• Appendix A – Analytical Solution for the Stationary Value of f (Chapter 2)
• Appendix B – Approximate Solution of the Diffusivity Crossflow Problem in n-Layer Reservoirs (Chapter 3)
• Appendix C – Solution of the Crossflow Caused by Different Boundary Pressures (Chapter 4)
• Appendix D – Approximate Solution for a Well Producing From All Layers at a Constant Rate (Chapter 7)
• Appendix E – Approximate Solution and Its Extension When Each Layer of a Two-Layer Reservoir Produces Independently (Chapter 7)
• Appendix F – Case for Variable Bottom-Hole Rate (Chapter 8)
• Appendix G – Case for Constant Wellhead Rate (Chapter 8)
• Appendix H – Solution of the Problem (Chapter 9)
• Appendix I – Limiting Behavior for f=αD(pwD1-pwD2) (Chapter 9)
• Appendix J – Commonly Used Units in Different Unit Systems
• References
• Index