... and parallel to the bedding of the shale. The determination of the model parameters is demonstrated using the data obtained from two pressuremeter test cases in Opalinus Clay, a shale with strong anisotropy. The elastic parameters of the model are determined with the model fit on the data from the unloading...

... with confining pressure, and the dynamic results is higher than the corresponding static values. The Young's modulus parallel to bedding is higher than that of perpendicular to bedding. However, the Poisson's ratio has no significant rule with confining pressure and bedding direction. Secondly, the dynamic...

... into the system via solid substitution modeling. Laboratory data was scattered against the lab-scale rock physics templates to capture the dominant pores morphology with respect to beddings in the Bakken shale. Furthermore, this study captured the implications of different pore structures on controlling...

.... Brittle wing cracks appear from the indenter along the shale bedding, but indentation depth is dominated by ductile plastic shear deformations governed by extreme compressive stress magnitudes below the indenter-shale contact. Simultaneous analysis of the experimental loading-unloading indentation curves...

... tunnel civil product strength bedding armco superlite fosterville culvert construction bridge-plate two-radius arch ARMA 22 0527 Feasibility Study and Design of an Underground Entry/ Access Structure at an Underground Gold Mine B.B. Carlisles Ballarat Gold Mine, Ballarat, VIC, 3350, Australia...

... of multi-cluster fractures in the Lucagou shale reservoir and use the acoustic emission (AE) to monitor the dynamic process of hydraulic fracturing. The results show that the fracture interference starts from the initiation stage and is seriously affected by the bedding structure. The fracture interference...

... propagation law of the three types of reservoirs is obtained, and the suggestions for fracturing are put forward. The results showed that there are two significant characteristics in the study area. One is the development of bedding, which is easy to form horizontal fractures. Influenced by bedding and stress...

... cement sheath wy23-5hf shale reservoir bedding ARMA 22 0867 A new model for risk assessment of fault slip induced by hydraulic fracturing of shale gas in the Sichuan Basin Zhang Hui China University of Petroleum (Beijing), Beijing, China Li Jun China University of Petroleum-Beijing at Karamay...

... ABSTRACT: Many gold and base metals deposits in Western Australia are hosted in anisotropic rock masses. These may comprise bedded siltstones, sandstone and shales or foliated mafic and ultra-mafic rocks. When bedding or foliation are unfavorably oriented, slope instability mechanisms...

... ABSTRACT: We measure acoustic travel-times in Green River shale both parallel and perpendicular to bedding to observe the effects on petrophysical properties of interactions with water (fracture fluids) for different durations. X-ray diffraction shows the samples dominantly comprise carbonate...

... ABSTRACT: The fracture energy of the shale possesses a significant anisotropy due to the shale bedding and has great effects on the fracturing path. To investigate these effects, three types of the shale specimens are applied in fracturing test with three-point bending. The Digital Imaging...

...-induced matrix swelling. An apparent anisotropic nanopore structure is shown in Illinois coal cut perpendicular to bedding, in which the degree of anisotropy generally increases with increasing pore size. Uniaxial compression perpendicular to the bedding can cause a “two-stage” pore contraction in both...

... and to investigate the effect of different boundary conditions to provide feedback to the experimental program. Specifically, in this paper we focus on studying the effect of beddings and their orientation on the propagation of hydraulically induced fractures. For this purpose, we built a model recreating...

..., and bedding orientation. We found that samples sheared parallel to bedding were less likely to develop numerous secondary fractures. Fracture transmissivities tended to increase with continued shear and secondary fracture development, but a high variance exists between sample behavior. In some instances...

... fracturing Upstream Oil & Gas drilling operation Reservoir Characterization strength bedding sidewall core tensile strength diameter plug Brazilian tensile strength Rock mechanics geomechanics Symposium fracture toughness Berea sandstone Marcellus Shale tight sandstone result comparison...

... reservoir geomechanics Upstream Oil & Gas pore pressure net mean stress bedding Skempton shale barrier shale peak axial stress triaxial test Wellbore Design axial stress failure mode Pierre shale Skempton coefficient deformation pore pressure change ductile behavior coefficient...

... of applicability of ubiquitous joint models and when they fall short of capturing the correct deformation behaviour. The paper will show that ubiquity does not equate to continuity and that ubiquitous joint models are not able to capture the correct behaviour for discontinuities of large extent, such as bedding...

... was tested. Experimental results indicated that shale samples perpendicular to bedding exhibited higher strength and rougher fracture surface, resulting in higher unpropped fracture conductivity than samples parallel to bedding. There was not a strong positive relationship between displacement and unpropped...

..., strain softening along the bedding planes, and creep of the shaley rock under compressive stresses. Finite Element Analysis (FEA) was performed to simulate the excavation sequence and analyze the rock behavior observed during excavation. To address concerns regarding long term stability of the cavern...

... to bedding directions and the correspondent changes in pore pressure in the specimen are recorded. This has lead to interesting observations on the connections between the directional-dependent solid and bulk response of rock. Reservoir Characterization compressibility back pressure bedding pore...