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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1684
... the coupling simulation show localize at the top of injected reservoir and along faults paths. In addition, sensitivities on fault stiffness were performed. It can be observed that the lower fault stiffness scenario tends to increase the magnitude of plastic shear strain in upper direction along fault planes...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1274
... radial well reservoir characterization gas production plane hydrate ghb saturation decomposition depressurization branch length ARMA 21 1274 Numerical simulation of gas production from hydrate deposits with radial jet drilling technology Panpan Zhang, Shouceng Tian*, Wenhong Zhang, Yiqun...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1865
... the diversion of the hydraulic fracture plane and thus improves the probability of interconnectivity between fractures. fracture characterization intermodal failure ratio viscosity reservoir characterization upstream oil & gas fracture tip viscosity fluid complex reservoir injection rate...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1999
... fracture zones. hydraulic fracturing reservoir characterization structural geology orientation displacement us government renewable energy central scandinavian caledonide estimation fracture borehole foliation plane underground research facility guglielmi stress tensor injection...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0098
... directions were systematically varied during the test. The results show that differential stress of 20 MPa compressed to coal resulted in an order of magnitude drop in permeability. For the pre-existing natural fractures in coal, the butt cleat plane was more sensitive to variations in the principal stress...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1619
... ABSTRACT: We investigate the case of a hydraulic fracture (HF) propagating perpendicular to the isotropy plane of a transversely isotropic material: a relevant configuration for the growth of HFs in sedimentary rocks where fractures are propagating vertically across layers. We extend...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1792
... to virtually map large numbers of discontinuity features such as fractures, bedding planes, and joints; features that would otherwise be inaccessible in a safe manner. Volumetric measurements can be made on discrete hazardous blocks to support rock fall simulation studies. This workflow was applied...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2062
... as for calculation of the safe drilling window. Two case study wells for the Permian Basin (West Texas and New Mexico) are included in our study. Upstream Oil & Gas shear failure Reservoir Characterization failure location plane Wellbore Design elastic anisotropy stress concentration MPa wellbore...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2043
... specimens showed pronounced increase in the significance of the time-dependent behavior after the formation of a major failure plane within the specimen. Due to the irregular surface of the failure plane, the time-dependent behavior of failed specimens became much more complex than intact ones. In order...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2162
... material point calibration microstructural direction plane material parameter elastoplastic parameter anisotropy 1. INTRODUTION We introduce an anisotropic modified Cam-clay model that captures rate-dependent responses of clay, mudstone, shales and sedimentary rock. By extending the strain space...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2147
... or faults. The paper will also show that this behaviour is inherent in the incremental stress/strain formulation of constitutive models and not specific to any finite element or finite difference code. Reservoir Characterization joint model bedding Upstream Oil & Gas plane application...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2182
... stress induced by the dilated rock matrix. hydraulic fracturing fracture interaction natural fracture Upstream Oil & Gas paluszny complex reservoir fracture tip flow in porous media Fluid Dynamics Simulation plane quantify interaction magnitude matrix permeability hydraulic...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2178
... elasticity, or the Lekhnitskii-Amadei anisotropic elasticity solution. Shear failure along the borehole wall can be modeled using two variants of the Jaeger plane of weakness model, using either the Mohr-Coulomb or the Mogi-Coulomb failure criterion for failure along planes other than a bedding plane...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2027
...-automated approach machine learning persistence parameterization Island plane assessment rockfall hazard assessment photogrammetry point cloud investigation wall strength discontinuity acquisition 1. INTRODUCTION Rockfalls present a substantial increase in their spatial and temporal...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0483
... geomechanics orientation hydraulic fracturing displacement US government strength Reservoir Characterization Upstream Oil & Gas roughness mineral orientation fracture toughness mineral texture gypsum gypsum sample plane fracture propagation texture cast gypsum laboratory west lafayette...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1710
... plane being formed with numerous thermal cracks inside the coal samples during the thermal fatigue loading. When the confining stress level is low, the major fracture is followed by the thermal shock. On the contrary, if a coal sample is subjected to higher stress level, the directions of the major...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1711
... Upstream Oil & Gas in-situ ae AE event borehole plane in-situ acoustic emission frequency range sensor kHz nakatani cementation experiment naoi plenker excavation AE sensor 1. INTRODUCTION For the safe use of underground structures like mines monitoring of their conditions...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-772
... plane mt solution decomposition confidence zone 1. INTRODUCTION Acoustic emission (AE) is a phenomenon that spans the generation and propagation of acoustic (elastic) waves caused by sudden irreversible changes in the internal structure of a type of material. In the case of rock, it is closely...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1059
... of the formation is also treated as anisotropic to honor the fact that drilling fluid infiltration along the fracture direction is easier than that along the direction normal to the fracture plane. Furthermore, an inertia-based stabilizing method that we have proposed previously is employed to overcome...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1169
... Reservoir Characterization Upstream Oil & Gas surface geometry direct shear test surface description Wellbore Design ultimate dilation joint surface rock joint plane asperity dilation response 1. INTRODUCTION Rock dilatancy is of high importance in influencing the hydro-mechanical behavior...

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