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Keywords: stress intensity factor
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1677
... technology has been recently revisited for developing of shale gas and geothermal resources, and as an alternative to hydraulic fracturing in places where the hydraulic fracturing is not allowed (Reinsch et al. 2018). complex reservoir stress intensity factor hydraulic fracturing unconventional...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0279
... (DDM). The reduction in stress intensity factors at the fracture tips resulting from the corresponding shear slippage length and shear displacement discontinuities are presented. The improved height growth model that accounts for the effect of shear slippage at weak interfaces is integrated in a pseudo...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1636
... cohesive element stress intensity factor subcritical crack growth degradation atkinson stability excavation rock bridge underground excavation ARMA 19-1636 New technologies for time-dependent failure modeling of discontinuities in rock containing intact rock bridges Chun, K.H. and Kemeny, John...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-943
... fractures propagate due to the fracture tip stress intensity factor has exceeded the rock’s fracture toughness. However, in some circumstance, even though the tip stress intensity factor is below the rock’s fracture toughness, the fractures could continually propagate for some distance due to the water-rock...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-924
... tip specimen Reservoir Characterization stress intensity factor connector experiment low pore pressure zone ARMA 18 924 Effect of Low Pore Pressure Zone at Crack Front on Rock Fracture Toughness Zhibin Liu, Guangqing Zhang* China University of Petroleum-Beijing, Changping, Beijing, China...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-491
.... Artificial Intelligence Upstream Oil & Gas hydraulic fracturing fracture pattern paluszny complex reservoir stress intensity factor initial fracture fracture growth three-dimensional fracture network geometry mesh paris law fracture simulation of human behavior neural network node...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-514
... factor, XFEM is less favorable than the FEM. hydraulic fracturing aperture crack tip Reservoir Characterization Upstream Oil & Gas initiation analytical solution Artificial Intelligence stress intensity factor xfem method reservoir geomechanics element method XFEM crack...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-656
... analytical solution is not available. Results show that VCCT is able to produce very accurate solutions with reasonably refined mesh before the stiffness barrier and after the stress barrier. hydraulic fracturing containment Applicability Artificial Intelligence stress intensity factor energy...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0836
... growth. Although some upwards growth is modeled, growth is expected to prominently occur towards the reservoir. reservoir geomechanics caprock Reservoir Characterization stress intensity factor Upstream Oil & Gas Simulation co 2 co2 injection plume temperature plume international...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0969
... illustrates two case studies in shale formations that assess the advantages and limitations of the suggested approach. Completion Installation and Operations stress intensity factor mechanism Energy Economics application hydraulic fracturing fracture mechanics rock mechanistic approach fracture...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-121
... & Simulation case study hydraulic fracture interaction fracture stress intensity factor propagation junction complex fracture network injection numerical algorithm ARMA 16-121 Coupled Geomechanics and Fluid Flow Computational Algorithm for Hydraulic Fracturing Simulations: Case Studies Bai, J...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-183
... Abstract: Four-point asymmetric bending beam geometry can conveniently be used in shear mode fracture testing of rock and concrete-like materials. Stress intensity factors are computed by contour integration procedure embedded in a finite element program package. To achieve pure shear mode...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-368
... compatibility of fracture volumetric strains. Fractures are discretely modeled using triangular surfaces in an unstructured three-dimensional mesh. The growth of fractures is modeled using linear elastic fracture mechanics (LEFM), with the onset and direction of growth based on stress intensity factors...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-373
... concentration characterized by the stress intensity factors. This approach is based on the principle that jointed rock slope stability is governed by the stresses intensity factors at the joint tips rather by the frictional resistance along the joint surfaces. The crack initiation starts when the tip stress...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-561
... minerals, quartz and feldspar [7], which plays significant roles in triggering fracture generation and propagation, and wellbore instability. complex reservoir shale gas Upstream Oil & Gas stress intensity factor complex shale formation capillary force shale formation contact angle...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-457
.... Particulate-based mud additives known as lost circulation materials (LCM) have been commonly used for this purpose (Morita et al., 1990; Onyia, 1994; Dudley et al., 2000). Wellbore Design stability analysis lcm aggregate fracture propagation wellbore integrity stress intensity factor mechanism...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-020
... method (TMSM). This approach uses interaction integral to compute the mix-mode (opening and sliding modes) stress intensity factors, and the vector cross-product is applied on the split element position. The arbitrary fracture propagation angle is obtained through the maximum tangential stress criterion...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-073
... of the P3D, which consists of multiple rows of elements vertically stacked and connected. For each row of elements, the assumption of the fracture front being in the lower stress layer is satisfied locally. The width profile and stress intensity factor at the top and bottom of the fracture depend...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-291
... fractures is imposed by mixed mode stress intensity factor, which is calculated using a displacement correlation method. This scheme is also coupled with tensile and shearfailure models to describe natural fracture evolution and its interaction with approaching hydraulically induced fractures...

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