This work investigated permeability evolution for fluid flow through natural fractures and
artificial fractures in granite and the evolution of failure surface under cyclic fatigue loads …

The behavior of fluid flow through rock fractures in the form of radial flow is a critical issue in
various subsurface geological engineering projects. Previous work has considered to …

The caprock of coal-bearing strata plays a critical role in CO 2 geological storage, with the
presence of fractures posing a heightened risk of CO 2 leakage. The cyclic effects of CO 2 …

Taking coal under hydro-mechanical coupling as the research object, the discrete element
software PFC3D (particle flow code) was used to analyze the relationships among the force …

In this study, a high-confining pressure and real-time large-displacement shearing-flow
setup was developed. The test setup can be used to analyze the injection pressure …

Injecting large amounts of fluid into the ground is an inevitable step in many subsurface
energy extraction operations and has the potential risk of inducing fault activation. The …

The injection of large volumes of natural gas into geological formations, as is required for
underground gas storage, leads to alterations in the effective stress exerted on adjacent …

Injection-induced seismicity has been a focus of industry for decades as it poses great
challenges to the associated risk mitigation and hazard assessment. The response surface …

The occurrence time and magnitude of injection-induced seismicity are influenced by
engineering factors, such as wellhead pressure, injection location, injection volume, and …

Good caprock sealing is crucial for ensuring the long-term safety and security of carbon
dioxide (CO 2) geological storage. However, concealed faults within caprocks and …