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Keywords: anisotropy
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0781
... ABSTRACT: Shale exhibits significant anisotropy on both macroscopic and microscopic scales, which can influence the efficacy of the fracturing process. Existing research lacks investigations on the laws governing the variation of mechanical anisotropy at the microscopic scale relative to size...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0762
... subdiscipline roughness reduction rock mechanic reservoir surveillance reservoir characterization specimen jrc geology flow in porous media production control permeability aperture fractal dimension correlation characteristic coefficient journal compression threshold anisotropy deformation...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0063
...), Rassouli and Zoback (2016), Ma and Zoback (2017), and Xu et al. (2017)). This time-dependent viscoplastic behavior is affected by the mechanical and mineralogical properties of the rocks, as well as the reservoir stress and thermal conditions. The degree of anisotropy and the direction of the applied...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0892
... ABSTRACT: Rocks exhibit anisotropy in various properties, including ultrasonic waves and diametrical deformation in the radial direction. While previous studies have attempted to analyze rock failure and anisotropy using several cores, the aim of this research is to evaluate the properties...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0878
... evolution journal fracture permeability anisotropy aperture ARMA 24 0878 Permeability evolution of fractures in shale in the presence of high salinity water Bai, T., Melkoumian, N. School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, Australia Hashemi, S. Department...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-1061
... ABSTRACT: Shales are anisotropic, but their anisotropy is often neglected in geomechanical field applications. A major reason for this omission is the need for input data, which includes at least five different elastic parameters that are not commonly available. Recent developments have...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-1098
... ABSTRACT: Laminated rocks, prevalent in natural geological processes, exhibit pronounced mechanical anisotropy, a characteristic shared with unconventional hydrocarbon reservoirs. The arrangement of laminations significantly influences fluid flow and stress propagation, underscoring...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-1069
.... Next, the results of the numerical model are compared with a two-dimensional limit equilibrium analysis, allowing to establish the characterization of the anisotropy rosette and the rock bridge percentage. 1. INTRODUCTION it is important that when studying rock mass geomechanical behavior in slopes...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0940
... ABSTRACT: Shale exhibits a certain degree of anisotropy in its deformation properties. This anisotropy is important to consider in rock engineering problems. Pressuremeter (or dilatometer) testing, as an in-situ method to determine geomechanical parameters, has revealed its potential...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0114
... ABSTRACT: The first laboratory study describing elastic anisotropy of Bakken shale reservoir was reported almost three decades ago. Since then, several efforts have been made in this direction, with the most recent being in 2022 to characterize hydraulic fracture-driven interaction. Separately...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-1152
... to their anisotropy, which provides directional dependence on their mechanical behavior. Their laminated structure with distinct bedding planes introduces mechanical variability. Therefore, understanding their orientation-dependent behavior could not only contribute to further optimizing hydrocarbon extraction...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-1191
... attachment of the measurement probe to the rock, and from being a point measurement, neglecting the inherent heterogeneity and anisotropy of rock and its effect on the strain response of the larger rock mass volume. The second type of methodology involves measuring the pressure necessary to initiate...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0256
.... Example cases show that crack initiation strongly depends on HF length, NF angle, coefficient of friction and stress anisotropy. Crack initiation occurs only when HF reaches a sufficient length since the shear-slip zone length is proportional to HF length, which in turn affects K 1 at the crack tip. 1...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0415
... ABSTRACT We present the elastic anisotropy of two rock samples from two underground research laboratories (URL) that are focused mainly on the investigation of functionality of deep repositories: (1) BUK sample – migmatized paragneiss, typical for the test site of the URL Bukov, Czech Republic...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0420
... to, finally, a microcracked composite. The uncertainty in the homogenized properties is considered by representing the key model parameters as random variables and quantifying the response through Monte Carlo simulation. We pay particular attention to the anisotropy of the shale elastic response, which we...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0430
... geomechanical instability and other risks. geologist europe government reservoir characterization geology analytical sol stress change numerical sol wellbore design reservoir geomechanics displacement anisotropy stress path symmetry axis subsurface isotropic reservoir geertsma stiffness...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0379
... can be explained by the stress memory effect. Stiffness constants and Young modulus were determined for primary material orientation INTRODUCTION Elastic anisotropy is a crucial physical property of crustal rocks namely when reflecting deformational history of the rock. Knowledge of the anisotropy...

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