... fracture fracture permeability doi geological subdiscipline deformation international journal geologist hydraulic fracturing reservoir characterization aperture asperity tunnel laboratory young morphology rock mechanic experiment university 15th ISRM Congress 2023 & 72nd Geomechanics...

... government reservoir geomechanics slave node boundary geology young slave node 0 information science cfdem international journal simulation fracture onset munjiza southern university 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG A continuum-oriented...

... as well as bedding dip. The results show that the increase of the anisotropy of Young's modulus, Poisson′s ratio and horizontal in-situ stress induces a reduction of the FIP. While an increase of tensile strength ratio T v /T h and bedding dip will increase the FIP. It is concluded that the influence...

... ABSTRACT: The differential characteristics of temperature- and pressure-dependent dynamic and static elastic properties are investigated in a range of temperature and confining pressure for porous sandstone. Results show that the dynamic and static Young's moduli increase against confining...

... drilling fluid conditions. The results show that the anisotropy parameters ε, γ and δ calculated from wave velocities are <<1 for dry or soaked samples, indicating that this shale is a weak anisotropic rock. And the dynamic Young's modulus E 11 substantially exceeds E 33 in all cases...

... ABSTRACT: Key geomechanical parameters utilized in rock engineering include Young's modulus and Poisson's ratio. Uniaxial compressive test results are essential in the evaluation of these values. This paper aims to study the process of changes of Poisson's ratio and Young modulus for intact...

... and by considering it, crack initiation stress observed in the laboratory can be captured (∼ 40% of UCS). BACKGROUND Natural rocks and man-made granular and fibrous composites display bi-modularity when subjected to compressive and tensile stresses. In rocks, the tensile Young's modulus is typically less than...

... opening is perpendicular to these planes. The dynamic Young's modulus is larger than the static one (up to 2.2 times) before loading. For the perpendicular loading direction, the ratio of dynamic to static moduli decreases continuously, suggesting an increase in hydraulic connectivity of the pore space...

... characterization deformation laboratory significance upstream oil & gas diameter heterogeneity young shear resistance reservoir geomechanics specimen characteristic strength validation shear strength deformation characteristic plane post-failure deformation characteristic transducer moduli...

... and 3000 m/s. The discontinuities showed to be a mirrored function of the Young's modulus, with an inverse proportion to that when considered the spacing of discontinuities. 1 Introduction ISRM Suggested Methods on Borehole Geophysics for Rock Engineering describes a series of borehole geophysical...

... logging geophysical research seismic anisotropy p-wave log analysis foliation christensen poisson earth young fractional anisotropy south island elastic anisotropy geophysics porosity liebermann Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón...

... experiments were performed on these rocks in order to estimate and compare the Young’s Modulus, the Poisson’s ratio and the Bulk Modulus obtained by static and dynamic methods. Our results shows that the elastic moduli obtained by the static and dynamic experiments are in the same order of magnitude. 1...

... in the International Journal of Rock Mechanics and Mining Sciences and, presently, in Rock Mechanics and Rock Engineering). The published SMs are a guidance to laboratory operators on the suitable procedures for characterizing a rock or a rock mass. non-ground specimen young method table 1 reservoir...

... the stresses in the rock mass and that small deformations along an existing shear zone can cause significant instabilities in the surrounding rock mass resulting in an increase in the size of the cavity. Supporting of the rock mass and backfilling of the cavity with materials having a Young's modulus of larger...

... mechanical properties, such as Young's modulus and maximum stress, for different defect densities were derived and discussed in detail. structural geology young defective kaolinite montmorillonite upstream oil & gas defect deformation si 1 kaolinite simulation md simulation journal si...

... from one of the rare existing drilling cores. Rock density ranges from 2.1-2.8 g/cm 3 indicating different lithologies with porosity ranging from 0.3-19.1 %. Mechanical behavior of the aquifer was investigated by dynamic and static methods. Young's Modulus ranges from 3-103 GPa and rock strength from...

... Young's modulus ( E ) and Poisson's ratio (υ), determined for post-salt carbonate reservoir samples recovered from an oil field in the Campos basin, Brazilian offshore. The samples lithofacies was described as peloidal packstone with bioclasts and microoncoliths. The elastic properties were calculated...

... been proved by numerous experiments (Chen et al., 2017; Thenevin et al., 2017; Li et al., 2018). residual shear strength international journal beijing validate strength mpa rock mechanic mining science shear slippage technology china university young upstream oil & gas grout...

.... The mechanical properties are reported under three test categories: Unconfined compression, tensile (Brazilian) and triaxial compression. Model materials with unconfined compression strengths as low as 51bf./in 2 can readily be produced and the values of Young's moduli for a range of strengths give suitable...