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Keywords: representation
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2039
.... Upstream Oil & Gas vertex Srinivasan classifier machine learning breakthrough curve DFN Artificial Intelligence Simulation fractured media discrete fracture network Transport Characteristic representation system reduction fracture backbone reduction full network hyman algorithm...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2071
... & Gas stress shadow fracture half-length application horizontal well pressure response representation length direction fracture net pressure geometry height fracture volumetric stress shadow 1. INTRODUCTION As multi-well pad operations become more complex and the natural variability of...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2031
... representation in an in-house finite element simulator. In order to represent the geomechanical behavior of the fractures, Mohr-Coulomb criterion is adopted together with a traction-separation law based on the model proposed by Bandis. Parallel plate law describes the longitudinal fluid flow along the fracture...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1731
... representation, fracture angles of the most possible fracture planes were formulated analytically which is closely related to rock burst intensity. For validation of the theoretical results, laboratory experiments and review of the in-situ studies on rock burst were carried out. By comparison, a good agreement...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1727
... Artificial Intelligence heterogeneity prediction representation realization Engineering algorithm variogram assessment application rock mass Upstream Oil & Gas information empirical system spatial variability case study 1. INTRODUCTION The search for more robust and detailed techniques...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-739
... Lade-Kim. For better representation of the travertine rock behavior observed in the laboratory, inverse analysis will be used, incorporating the Lade-Kim Model for MINPACK library in Fortran 90. The results obtained so far indicate that this model is adequate to represent the geomechanical behaviour of...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-635
... stiffness FEM model Ground Support failure mechanism stress measurement high horizontal stress reservoir geomechanics mechanism representation rock mass stiffness 1. INTRODUCTION Room and pillar mining in sedimentary rocks present specialized challenges in rock mechanics, due to the high...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1094
... hydraulic fracturing fracture pattern inhomogeneity international journal computational domain damage model crack propagation realization mechanics implicit realization approach anisotropy representation fracture ARMA 18-1094 Modeling of rock inhomogeneity and anisotropy by explicit and...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0386
... ABSTRACT: We examine P-wave propagation in a fractured medium using effective medium, explicit fractures, and localized effective medium representations of fracturing, to quantify their effectiveness. We model a published experiment with multiple parallel fractures. Initial models assume...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-553
... continuum and additional deformations due to opening/slip. The explicitly representation of faults may be done in various ways, the more classical one is via zero-thickness (or sometimes thin layer) elements inserted in-between element faces/edges while all nodal variables maintain the traditional meaning...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-532
... Abstract: Advancing fractures during the hydraulic fracturing process can produce complicated growth pattern when propagating in a pre-exiting natural fracture network. A proper network representation for simulating pressure-driven and natural fracture interactions is crucial as these...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-518
... Drilling salt exit plastic strain effective plastic strain representation fault stability stress condition Abstract: Salt mechanics plays a main role in the stress regimes of (ultra-deep) pre and post-salt reservoir plays. Stability issues associated to drilling to these targets include...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-520
... geomechanics orientation natural fracture coupling fracture Upstream Oil & Gas pore pressure hydraulic fracturing Implementation aperture evolution representation matrix fractured reservoir fracture permeability geomechanical model fluid flow formulation permeability 1. INTRODUCTION...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-222
... evaluation of integrals. The approach employs planar triangular boundary elements and is based on the integral representations written in a local coordinate system of an element. In-plane components of the fields involved in the representations are separated and arranged in certain complex combinations. The...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-302
... Abstract In recent years, analyses based on the hybrid finite-discrete element method (FDEM) have been shown to provide a realistic representation of rock deformation and fracturing processes at laboratory and engineering scales. However, the ability to model linear rock reinforcement...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-764
... to cuttings size distribution. Several parameters such as mean particle size and coarseness index were used for numerical representation of cuttings size. Also a new particle size distribution bar diagram was proposed for cuttings samples comparison. 1. INTRODUCTION One of the purposes of an...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7199
... pillar-scale model stress-strain curve representation pillar barrier pillar shear failure pillar pattern different pillar pattern deformation 1. INTRODUCTION Stability analysis of large room-and-pillar panels in underground mines could be a challenging problem because: 1) it requires...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-584
... scales [19-20]. In this study, we focus on how to resolve this problematic situation via a sequential, hierarchical multi- scale method, which, at its base, relies on a dual-scale representation of inhomogeneity and damage. By overlapping the spatial scales at which successively coarser simulations are...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-678
... anisotropy seismic data reservoir quality rock class completion quality Rock Fabric machine learning orientation Upstream Oil & Gas geomechanical model Haynesville shale haynesville unit fracture containment Magnitude horizontal stress representation stress contrast 1. INTRODUCTION...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-703
...), Combined Finite-Discrete Element Method (FDEM), etc. However, most of these analyses were either limited to 2D or to elastic material representation. In this paper a representative 3D block caving problem is simulated using FDEM. Los Alamos National Laboratory’s Geophysics team conducted the modeling...

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