This article reviews laboratory experimental studies on hydraulic fracturing under triaxial and
true triaxial stress conditions in crystalline rock for geothermal purposes, and places …

Induced seismicity associated with fluid injection into underground formations jeopardizes
the sustainable utilization of the subsurface. Understanding the fault behavior is the key to …

The failure mechanism of shale under cyclic loading is useful for understanding fatigue
hydraulic fracturing in reservoirs. The anisotropic characteristics of this mechanism were …

Deep shale gas reservoirs, compared to shallow and intermediate shale gas reservoirs,
usually exhibit lower fracture complexity, smaller stimulated volume, poorer conductivity, and …

Laboratory hydraulic fracturing tests on cubic granite specimens with a side length of 100
mm were performed under true triaxial stress conditions combined with acoustic emission …

This study reveals the important role of hydromechanical responses of large hydraulic
fractures in the cause and mechanisms of induced seismicity associated with the M w 5.5 …

The influence of combining the inherent anisotropy and fatigue loading on shale's
mechanical behaviors is rarely investigated. To study the anisotropic fatigue behaviors of …

Induced seismicity associated with fluid injection has raised serious concerns for the safety
and efficiency of geo-energy systems. Cyclic injection has recently been proposed as an …

Cracks at various scales in rock masses are often subjected to mixed-mode I-II loadings in
Earth's dynamic processes and geotechnical engineering works. Insightful understanding of …

As one of the most promising shale gas reservoirs in China, the Lower Silurian Longmaxi
formation in the Sichuan Basin has produced a large amount of shale gas during the last few …