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Keywords: criterion
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Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0208
... a linear Mohr-Coulomb criterion is applied. The cohesion in the porous formation is assumed to be dominated by thhe hydrate saturation in addition to the pure mechanical loading. Sand production onset and sand rate is postulated to be defined by an effective plastic strain (EPS) and proportional...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0493
...-linear weakening failure criterion that allows irreversible tensile failures. To couple the fracture development and fluid flow inside and outside the fracture, we introduce a method to modify the fracture's neighboring elements by an anisotropic permeability as a function of fracture width. To ensure...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0604
...-prager criterion linear drucker-prager criterion mesh density reservoir geomechanics criterion strength drucker-prager criteria hyperbolic dp criterion cement property geological subdiscipline criteria interface cement sheath integrity rock mechanic geomechanics symposium cement stone dp...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0608
... united states government china government geology rock type geological subdiscipline alternative expression reservoir characterization expression asia government loading path strength criterion traditional loading path geologist wellbore design reservoir geomechanics criterion...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0587
... curves were obtained. The maximum tensile stress criterion was modified considering the influence of confining pressure, which was incorporated into ABAQUS, and characteristics of hydraulic fractures under different in-situ stress conditions were studied. The results reveal that (1) under the confining...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0630
... is established by ABAQUS. Secondly, based on the stress balance equation and fluid continuity equation, traction separation criterion and flow equation of cohesion unit, a coupled numerical model of reservoir stress-seepage flow is established. Then, using on-site production and original in-situ stress...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0074
... stress that led to the development of the measured breakout. Most commonly, Mohr-Coulomb failure criterion is used which disregards the influence of intermediate stress on strength. Different polyaxial criteria have been proposed to include this effect. Here, we first review selected polyaxial criteria...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0947
... that nucleate, grow, and interact. The medium is assumed to be isotropic and linearly elastic. Fractures are assumed to grow primarily in tension due to tidal stresses in the ice crust, and a damage criterion is used to model the weakening of the ice matrix that occurs concurrently with fracturing. The growth...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0168
.... geologist fracture china government hydraulic fracture upstream oil & gas asia government reservoir geomechanics injection rate geology complex reservoir geological subdiscipline specimen interaction interface propagation hydraulic fracture crossing natural fracture criterion experiment...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0749
... of in situ stress are the startingThe fault stability model assumes the present-day stress state is in a subcritical stress state regarding to the sliding criterion of thepoint of prediction of the MWW. Another typical example is the cap rock integrity study in PW(G)RI (produced water/gas reinjection...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-2032
... mechanic wellbore design synthetic sandstone journal cement criterion gutierrez characteristic tunnel rockburst study wibisono mpa calculation compressive strength international journal mining science ARMA 22 2032 Laboratory Characterization of a Synthetic Sandstone for Tunnel Rockburst...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0239
.... The comparison among different tests implies that smaller K is in favor of planar HF which crosses weak discontinuities, and in cases of larger K the HF growth is more likely to be affected by the pre-existing discontinuities. 4.2. HF Crossing Criterion In this section, we briefly discuss the criterion...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0290
...) compression, axisymmetric (conventional triaxial) extension, and multiaxial strength tests. The data are fitted to linear and nonlinear failure criteria: Paul-Mohr-Coulomb (PMC), a generalized linear criterion containing all three principal stresses; Hoek-Brown, a popular nonlinear criterion containing major...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0273
... & gas reservoir characterization grasselli barton criterion casted discontinuity strength roughness discontinuity criteria shear strength equation casagrande rock mechanic compressive strength anisotropy ytec table 2 mpa rock engineering ARMA 22 0273 YTEC - Privada Characterization...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0562
... criterion was proposed by Drucker and Prager in 1952 (Jiang & Wu, 2012). This criterion is a further development of the Mises criterion. The intrinsic structure relationship is: d = d eL + d pl (1) Where d is the total strain rate, d eL is the elastic strain rate, and d pl is the plastic strain rate...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0569
.... Zoback et al., 1985), which is related to shear and yield. For plastic rocks, the wellbore collapse can be described by using the plastic yield criterion(Germanovich and Dyskin, 2000), but for brittle rocks, the description of wellbore collapse can not only consider the shear failure hypothesis but also...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0570
...-dependent changes in the thermally induced stress and applying an appropriate AE-based failure criterion, so that the in situ stress can be determined by subtracting the induced stress from the failure stress. The goal of this research is to develop a technology to determine the stress state in geothermal...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0655
... are restored. Consider the role of intermediate principal stress, the wellbore stability analysis models of weak plane failure criteria and Modified Lade criterion are established. According to the model, the drilling fluid column pressure (collapse pressure) to maintain the wellbore stability is calculated...

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