An Analytical Solution for Pressure-Induced Deformation of Anisotropic Multilayered Subsurface

We present a generalized Geertsma solution that can consider any number of finite-thickness layers in the subsurface whose mechanical properties are different from layer to layer. In addition, each be assumed either isotropic or anisotropic. The accuracy is validated against numerical reference solution. further extended by linear superposition framework enables response simulation due an arbitrarily-distributed non-uniform pressure anomaly. approach tested and solving realistic synthetic model based on Salah CO2 storage compared with full 3D finite element Finally, means simple inversion exercise (based approach), we learn stiffnesses cap rock reservoir most influencing parameter result for given layering geometry, suggesting it very important estimate high-confidence both reservoir.