The state of stress within the earth has a profound effect on the propagation of seismic and borehole acoustic waves, this leads to many important applications of elastic waves for solving problems in petroleum geomechanics.
The purpose of this course is to provide an overview of the sensitivity of elastic waves in the earth to the in-situ stress, pore pressure, and anisotropy of the rock fabric resulting from the depositional and stress history of the rock, and to introduce some of the applications of this sensitivity. The course will provide the basis for applying geophysics and rock physics solutions to geomechanical challenges in exploration, drilling, and production. A variety of applications and real data examples will be presented, particular emphasis will be placed on the rock physics basis underlying the use of geophysical data for solving geomechanical problems.
Table of Contents
List of Symbols
Chapter 1 Introduction
Chapter 2 Sediment Compaction and the State of Stress in the Earth
Chapter 3 Pore Pressure
Chapter 4 Stress Sensitivity of Sandstones
Chapter 5 Wellbore Stability and Wave Velocities Near a Borehole
Chapter 6 Reservoir Geomechanics and 4D Seismic Monitoring
Chapter 7 Fractured Reservoirs
Chapter 8 The Seismic Anisotropy of Shales
Appendix A Stress Redistribution Near a Borehole
Appendix B The Two-Index Notation
Appendix C Excess Compliance Resulting from Grain Boundaries