Fracturing-hydraulic coupling in transversely isotropic rocks and a case study on CO2 sequestration

摘要

This paper outlines a two-dimensional displacement discontinuity method (DDM) for transversely isotropic elastic materials and a direction-dependent criterion for fracturing in anisotropic rocks. These are combined to analyse fracturing processes in transversely isotropic rocks. The fracturing analysis is then coupled with equations for fluid flow in fractures to study the interactions of the fluid flow and rock mass deformation. These functionalities have been implemented into an existing computing code FRACOD.