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Keywords: constitutive model
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1607
... ABSTRACT: A constitutive model for salt and potash is detailed. It is targeted towards those requiring a representative modeling of structures composed of these materials given a standard suite of material tests. These include creep, dilation and tensile tests. The model effectively captures...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2097
... operating pressure change curve artificial intelligence horizontal displacement well spacing natural gas storage thickness characteristic natural language displacement interlayer operation cavity salt rock vertical displacement beijing operating pressure constitutive model stability...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1153
... the earthquake interaction on the slope. The 3D model was developed considering the spatial variation of the materials into the domain. The constitutive modeling of the materials includes elastoplastic constitutive models with linear-softening and rock tensile strength cutoff. The numerical results in 3D...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1399
... draupne shale interface deformation lab test stiffness poisson scenario constitutive model equation ARMA 21 1399 CO2-induced creep on Draupne shale and impact on cemented wellbore integrity Xiyang XIE SINTEF Industry, Trondheim, Norway Laura EDVARDSEN SINTEF Industry, Trondheim, Norway Pierre...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1157
... ABSTRACT: The Mohr-Coulomb model is still the most widely used constitutive model in soil and rock engineering for its generality, simplicity, and ease of calibration of material constants from routine experiments. The failure envelope evolves shear and tension failure. One non-physical...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1978
... ABSTRACT: Despite the overall consistency of chalk in terms of reservoir properties across Danish North Sea fields, most of the constitutive models were successfully applied to one single hydrocarbon field. This study aims at building a comprehensive geomechanical model capable of predicting...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0390
... ABSTRACT: The development of a constitutive model for hard rock goes hand in hand with conventional experiments, which provide information about the intrinsic failure properties of the material. To date most models are calibrated and validated using the macro stress-strain responses from...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0502
... ABSTRACT: The understanding of the grout deformation and failure process and the use of appropriate constitutive models are the basis to predict the behavior of grouted threadbar, commonly used in Chilean mining as reinforcement in underground excavations during dynamic loading. Based...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1593
... mechanical changes, flow effects and thermal distributions due to different loading conditions on porous rock is given. Additionally, experimental work based on the theoretical differential equations of THM models is outlined, as well as different numerical studies based on constitutive models. Generally...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1605
... laboratory creep tests and by comparing the resulting curve of creep with the Burger model fitting. Reservoir Characterization strength compression test constitutive model natural gas storage steady-state creep rate mechanical property micro-creep model power function salt cavern Wellbore...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1579
... into sediment description is the first step towards simulating sediment response at the high stress levels and under the complex stress paths that characterize geologic systems. stress ratio geomechanical modeling dependency constitutive model reservoir geomechanics volumetric plastic strain basin...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1994
... to scanlines taken across the surface of the discontinuity. Upstream Oil & Gas Patton joint roughness coefficient Barton discontinuity JRC constitutive model reservoir geomechanics Rock mechanics joint surface roughness photogrammetry Reservoir Characterization surface roughness JRC...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2161
... ABSTRACT: Rock salt formation has been widely considered as a desired geological repository system for nuclear waste disposal. While the crystalline structure of rock salt has been often incorporated phenomenologically in macroscopic constitutive models, the microstructural effects...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0474
... of the rock mass is represented by a Bingham constitutive model. The borehole closure problem is solved using two numerical codes: an in-house (problem specific) MATLAB code and a commercial code (FLAC) with user-defined constitutive model capabilities. The MATLAB results are used as semi-analytical reference...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-984
... in salt while drilling salt formations by using constitutive models for estimating borehole diameter. In addition, a parametric analysis is performed to consider the effect of the most important factors affecting salt creep on borehole closure. Finally, general recommendations are provided to well...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-016
... evaluated based on two constitutive models built in FLAC. The simulation shows that the long-term contact pressure will increase from the preset wellbore pressure and eventually reach the in situ stress state, regardless of the mechanical property of the rock and the relative size of the casing annulus...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-104
... ABSTRACT: A creep constitutive model is developed by incorporating visco-elasticity, visco-plasticity and visco-damage to simulate the time- and rate-dependent nonlinear mechanical behaviors of salt rock. Based on the small deformation assumption and the effective stress concept in the theory...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1331
... ABSTRACT: Rock salt exhibits a strain and time dependent response under deviatoric stresses. The practical implications of this creeping behavior have been studied extensively for the design of underground excavations. Advanced constitutive models combined with modern computing capabilities...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1049
... ABSTRACT: Methane hydrates are an extremely large natural gas resource. There is interest in investigating hydrate bearing sands to address engineering problems such as wellbore stability and sanding. In this paper, triaxial compression tests and nonlinear constitutive models of the HBS were...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1324
... stimulated and dilated volume as well as the efficacy of rupturing the impendent impermeable barriers. The geomechanical model incorporates a non-linear elasto-plastic constitutive model calibrated with the available McMurray sand public data. Estimates of the initial oilsand permeability and porosity were...

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