... of the mechanical properties, fracturing processes, and failure patterns of jointed rocks, which have been investigated through experimental and numerical tests. The results of these tests indicate that, under the action of static compressive load, the existence of flaws changes the stress distribution mode...

... states government hydraulic fracturing compression principal stress geological subdiscipline diederich excavation bbm model upstream oil & gas wellbore design reservoir geomechanics strength brittle rock initiation tunnel rock mechanic confinement crack growth stiffness envelope...

... memory (Yamamoto et al., 2009). Kuwahara et al. (1990) proposed a model for the inelastic deformation of rock specimens under axial loading of compression to explain the mechanism of the Kaiser effect. According to Kuwahara et al. (1990) there are many potential micro-cracks in a rock specimen...

... of material. As a cemented granular material, rock is inherently double elastic, meaning that it has different stiffnesses in tension and compression – the tensile stiffness is lower than compressive. Loading cases that involve both tension and compression will therefore result in greater deformation than...

... (Zafar et al., 2020), and an average compressional P-wave velocity of 4100 m/s (Zafar et al., 2022a). 2.2 Experimental Scheme Creep experiments were conducted on Barre granite specimen under different stress levels of the failure strength under uniaxial compression. Fig. 1. (a) Load (black...

... and brittleness under static compressive loading. Thus, the fragmentation features including size, mass and shape for Gosford sandstone and granite were analyzed. The fractal dimensions were calculated through the mass-size statistical distribution and then compared with the brittleness levels obtained from...

...) compression, axisymmetric (conventional triaxial) extension, and multiaxial strength tests. The data are fitted to linear and nonlinear failure criteria: Paul-Mohr-Coulomb (PMC), a generalized linear criterion containing all three principal stresses; Hoek-Brown, a popular nonlinear criterion containing major...

... engineering petroleum science fracturing fluid fracture embedment wang stress-deformation behavior proppant plane journal particle shale formation qiqi wang dynamic fracture conductivity proppant embedment compression ARMA 22 315 Dynamic Fracture Conductivity Considering Stress-deformation...

... in the neighboring volume elements. Above a critical damage value, debonding triggers. The residual tensile and shearing strength of the CZM follow a linear softening law. The proposed model was calibrated against published triaxial compression tests conducted on shale. Single-cohesive zone tests highlight...

...) and the coring process Sakaguchi et al. (2002). Moreover, it is also argued that laboratory conditions are different from in-situ conditions, which is more complex and includes not only the compressive stresses but also tensile stresses Lehtonen et al. (2011); Zhang et al. (2017); Chen et al. (2018); Ban et al...

... of the engineered buffer material. This study investigated the coupled effect of glass microfiber reinforcement on the swelling and compressibility characteristics of sodium bentonite at both ambient (22°C) and elevated (50°C) temperatures. By using the one-dimensional consolidation test setup with temperature...

... ABSTRACT: Energy-related characterizations can provide important information regarding mechanical behavior of rocks. A series of uniaxial compression tests were carried out on intact rock samples obtained from Wyoming, USA. The physical properties of the samples (i.e., porosity and grain size...

... ABSTRACT: The Discrete Element Method (DEM) modeled by coarse-graining approaches has been gaining importance in many applications including a triaxial compression test that represents the key micromechanical behaviors of deformable solids. In this work, the triaxial compression test has been...

... ABSTRACT: In the process of exploring the mechanical properties of deep strata, we find that the granite after heat treatment has a negative Poisson's ratio effect. Therefore, we carried out the microstructure test and uniaxial compression experiment of granite in Gonghe basin of Qinghai...

... hydraulic fracturing configuration upstream oil & gas particle geometry dahi taleghani smp lcm activation ppa test compression fracture filament ARMA 21 1797 Smart Lost Circulation Materials for Sealing Large Width Natural Fractures Tabatabaei, M. and Dahi Taleghani, A. Department...

... of loading until the complete failure using the Phantom high-speed camera under uniaxial compression. The various stages of cracking process were captured with high resolution including crack initiation, coalescence and failure. Finally, it was found that the granite samples have the most violent failure...

... models, casing integrity is evaluated with varying pipe eccentricities, cement channels, breakouts, and injection pressures. In addition, near-wellbore 3D geomechanical models are developed to investigate driving mechanics such as axial and lateral compression, distributed and localized shear...

... fracturing wing crack coalescence eng compression int ARMA 21 1131 Fracture Coalescence in Brittle Materials under Uniaxial and Biaxial Compression: Numerical Investigation via FDEM Di Wu, Haibo Li, Liwang Liu and Shuaiyang Fu State Key Laboratory of Geomechanics and Geotechnical Engineering...

... extent. The results indicate that the fracture hydraulic conductivity decreases with time. Increasing the confining pressure or flowrate or surface roughness leads to greater hydraulic aperture reduction. Also, the effect of mechanical compression on specimen (the fracture and rock matrix) creep...

... hydraulic fracturing strength Reservoir Characterization Upstream Oil & Gas measurement circle reservoir geomechanics fracture pattern numerical analysis bonded-particle numerical model result numerically compression ring test ring specimen tensile strength diameter numerical...