... in conjunction with the DFNs (Discrete Fracture Networks) technique was performed to explicitly generate the discontinuities (i.e., cleats and bedding planes) in the numerical specimens based on the results of laboratory analyses. Then, the different realizations of mineral grains were embedded in the 3DEC model...

... differential stress with respect to the bedding plane of the rock formations are correlated with their time-dependent deformation. In general, a higher viscoplastic deformation is expected in isostress conditions, where the direction of the applied differential stress is orthogonal to the orientation...

... of similar fault fracture zones. The results show that drilling wells parallel to the fault are more likely to lose stability than drilling wells through the fault. The larger the fault distance is, the larger the dip angle is, and the stronger the disturbance is. The bedding plane slip of quicksand port...

... characterization engineering fracture co 2 bedding plane fracture propagation characteristic supercritical co 2 geological subdiscipline figure 4 rock type fracture propagation sc-co 2 ae amplitude mudstone journal specimen experimental study shale oil reservoir pre-fracturing ARMA 24 869...

... rock type geological subdiscipline anisotropy borehole creep shale wellbore design mudstone borehole caliper axis perpendicular deformation geology reservoir geomechanics bedding creep bedding plane quantifying anisotropic viscoelastic parameter prediction borehole deformation ARMA...

... ABSTRACT: Bedding planes in sedimentary rocks interfere during HF propagation and create complex networks. This investigation utilized semi-circular bend (SCB) test to analyze how opening mode fractures interact with bedding planes with bonded discontinuities of various spacings...

... at directions parallel and perpendicular to their bedding plane. Shale samples were tested through instrumented nanoindentation using grid arrangements with maximum loads of 4,000 μN and 10,000 μN. The results suggest that the mechanical properties of the tested shales showed an inverse relationship...

... ABSTRACT: The development of shale oil reservoirs has received extensive attention from countries around the world. Shale oil reservoirs are often distributed with a large number of horizontal bedding planes (BPs) and natural fractures (NFs), the presence of both have a greater impact...

... conditions by varying the normal stress. geologist reservoir geomechanics plate tectonics reservoir characterization berea sandstone specimen international journal bedding plane torque structural geology geological subdiscipline pedestal mining science prism specimen deformation...

... storage reservoir geomechanics mpa orientation fracture gradient geologist drillstem testing co 2 evaluation emission pressure geological subdiscipline breakthrough bedding plane fluctuation ARMA 24 671 Evaluation of caprock integrity with laboratory scale in-situ CO2 injection test...

...., 2017). Guo et al. (2020) conducted uniaxial compression test and acoustic emission monitoring on shale specimens with different bedding plane inclinations after thermal treatment of different temperatures. They found that the P-wave velocity decreases with the increase in bedding plane inclination...

... of formation would have significant impact on fracture initiation. In this study, a series of tight sandstones was collected to perform SC-CO 2 fracturing experiment. The effects of bedding-plane angle (BPA) and permeability of sandstone on fracture initiation are investigated. The results indicate...

.... Comparison of the failure zone with different borehole trajectories showed that the influence of the bedding plane decreased when the relative angle between the borehole axis and the bedding normal was small. Therefore, avoiding drilling parallel to bedding planes is conducive to borehole stability...

... disposal due to its low permeability, and it is characteristic of shale to possess inherent anisotropy due to the presence of bedding planes. However, it remains uncertain if/how such inherent anisotropy affects the creep behavior of shale and the performance of a shale repository. Without understanding...

... spatially detailed deformation, such as digital image correlation (DIC), is important for the investigation of the effect of rock heterogeneities. This technique enables a larger field of view than conventional strain gauges measurements. In this study, the effect of bedding planes on the macroscopic...

... government reservoir geomechanics seismic potential seismic activity coal seam shear stress seismic event geological subdiscipline h-panel interface discontinuity coal mining wellbore design metals & mining bedding plane intensity variation shear-type event ess value available energy...

... localization decreases, and the heterogeneity of the strain field increases at peak stress for homogenous specimens. The initiation stress of strain localization for specimens loaded vertically to bedding planes is reduced, specimens loaded horizontally to bedding planes have two initiation points. (2...

... ABSTRACT This paper proposes end-to-end physics-informed image processing to construct the digital twin of laminated shale cores/specimens and extract the number, spacing, length, and frequency of bedding planes. Specifically, the image stitching technique was applied to eliminate any...

... tight sandstones remain unclear. In this study, laboratory fracturing experiments were conducted to systematically investigate the major controlling factors of fracture propagation driven by Sc-CO 2 . Experimental results show that the samples with lower strength bedding planes tend to form more complex...

... at the scale of layers, but they also appear at smaller scales, down to the size of bedding planes. The interaction of a hydraulic fracture with a repetitive sequence of multiple layers of different fracture toughness can ultimately lead to the emergence of an elongated fracture or, alternatively...