... Wellbore Design hopkinson pressure bar test hybrid finite-discrete element method rock specimen finite-discrete element method Three-dimensional Hybrid Finite-discrete Element Modelling of Rock Failure Process H. Y. Liua*, D. Fukudaa, b, M. Mohammadnejada, Haoyu Hana and Andrew H.C. Chana...

... for bedded rock specimen. The two-dimensional numerical rock model consisting of 3800 particles is approximately 50 mm wide and 100 mm high. As shown in Fig. 1, the left part is the assembly of particles, and the right part is the contact modes between the particles. We resorted to the linear parallel bond...

... typically requires full size rock specimens (1000 mm 1000 10th Asian Rock Mechanics Symposium (ARMS10), Singapore The 2018 ISRM International Symposium © 2018 ISRM & SRMEG (Singapore), ISBN: 978-981-11-9003-2 Z. Zhao, Y. Zhou, J. Shang (Eds) 1 ARMS10 10 th Asian Rock Mechanics Symposium 29 October to 03...

... are difficult to be monitored rather than metallic structures which are homogeneous (Park et al., 2006). acoustic emission pzt patch kHz Reservoir Characterization emi signature Signature sensor impedance isrm international symposium asian rock mechanics symposium 29 rock specimen admittance...

... geothermal reservoir particle mechanics method granite asian rock mechanics symposium arms8 DEM Modeling october 2014 rock specimen heating-cooling cycle thermal effect 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan Insights from DEM Modeling of Thermal Effects...

... geology asian rock mechanics symposium arms8 centrifugal acceleration rock failure Reservoir Characterization centrifugal model test back side october 2014 Upstream Oil & Gas Consider Deterioration specimen rock specimen Inoue bedrock collapse kusakabe tensile strength 8th Asian Rock...

... numerical simulation Modeling & Simulation computer based training cutter prediction specimen penetration depth reservoir geomechanics Wellbore Design disc cutter international journal jeon prediction model rock specimen october 2014 Performance Assessment of Rock Cutting Tool S. Jeon...

... thesurface of rock specimens with a microscope, and measuredthe weight of rock specimens. It was shown that precipitation occurredon the surface of rock specimens. It was also shown that precipitation did not occur on rock specimens kept in water without HSULPC. The weight of all specimens kept with HSULPC...

.... strength numerical simulation october 2014 uniaxial compression Upstream Oil & Gas AE event Coalescence rock specimen Reservoir Characterization asian rock mechanics symposium arms8 initiation flaw anti-wing crack reservoir geomechanics Simulation specimen loading propagation 8th...

... ABSTRACT Laboratory flow tests have been performed to assess the effects of normal and shear stresses on the permeability of radial fractures around borehole. The rock specimens are prepared from Phu Kradung sandstone to obtain hollow cylinders having outside and inside diameters of 18.6...

..., the more slender models were found to produce smaller UCS values when compared to the less slender models in the case of the singly-jointed rock specimens. This observation was related to the need for more significant intact material rupture to accommodate sliding failure on the joint for the case...

...-mechanical property changes including revelation characteristics of microfractures due to laboratory accelerated weathering process. Total of 140 cycles of freeze-thaw were completed on deteriorated rock specimens with measuring the index properties as well as geometries of microfractures. Each complete...

... the injection of supercritical CO2. The experimental system was designed to reproduce deep reservoir condition within high pressure and high temperature. Rock specimen of Ainoura sandstone and Berea sandstone were employed. Supercritical CO2 was injected into the rock specimen with constant differential...

... ABSTRACT In this study, a method is devised to implement a supercritical CO 2 (scCO 2 ) injection environment on a laboratory scale and to investigate the effects of scCO 2 on the properties of rock specimens. Specimens of shale and sandstone normally constituting the cap rock and reservoir...

... Reservoir Characterization platen coefficient strength specimen compressive strength axial point load strength structural geology uniaxial compressive strength test uniaxial compressive strength rock specimen Japan tuff strength test Upstream Oil & Gas forced-wet state...

... deformation considering the pore fluid pressure was discretized. T{[ 11 HPSPSt jj ttt + (9) where [T] is the conductive matrix, [S] is the storage matrix, and {H} is the sources or sinks. 3. Model Set-up In the present paper, three different rock specimens with different porosity ratios (1%, 5% and 10...

... of discontinuities, increases with a decrease in size of rock specimens. The effect of size on the compressive strength of a pillar has been investigated by conducting tests both in the laboratory and in situ. Most of the experimental results available are for coal and are concerned especially with the compressive...

... on the conventional triaxial compression; and the rncsso development process of SG was investigated in direct shear test by means ofSEM. 2. STUDIES ON LOCALIZATION OF A MARBLE IN CONVENTIONAL TRIAXIAL COMPRESSION 2.1 Specimens and testing system Rock specimens were Daye marble. which belong to Tid' of Pliocene Epoch...

..., research the deformation oeallzation of coal and rock under the condition of uniaxial ~O~preSSion, trace quantitatively the full field deformation- dal~ure process of coal and sand rock specimen and obtain the e Ormation localization banding width. The gradient plasticity conStitutive relation...

... experimental results and to investigate the correlation between tensile strength and mode-l fracture toughness of rocks. b Rock specimens were obtained from Saudi Arabia, from both an outcrop and a petroleum reservoir at a depth of about 3.5 krn claw the ground surface. Other material and mechanical properties...