..., the analytical model predicts the induced stresses which can lead to fracture creation, while the numerical tool is used to model the propagation of these fractures. A modified discrete element method (MDEM) is used in the numerical simulations. The results show that the fracture creation and propagation...

... ABSTRACT: Material heterogeneity is commonplace in rock masses, and thus it is vital to investigate its influence on hydraulic fracture propagation in tight reservoir rocks. Here, based on the combined finite-discrete element method, two series of models with uniformly-distributed and Weibull...

... to investigate the mechanisms that control wave velocity, dispersion, and attenuation (Zhai et al., 2020). In addition, though indirectly related to this work, modelling of flow through granular beds is common in chemical engineering applications (Carman, 1997). The Discrete Element Method (DEM) has been...

... element method rock cutting analytical method contact force upstream oil & gas simulation brittle rock yang li numerical model bit selection single pdc cutter bit design international journal criterion finite-discrete element external edge pdc cutter interaction rock domain...

... processes. These failure mechanisms are typically a result of nucleation, interaction and coalescence of micro-cracks present throughout the sample. In this study, the Finite-Discrete Element Method (FDEM), which merges the finite element-based analysis of continua with discrete element based transient...

... not accessible experimentally (de Arcangelis et al., 2011), are widely used (Dorostkar et al., 2017b). Among the many numerical methods, the discrete element method (DEM) has been the most popular (de Arcangelis et al., 2011; Dorostkar et al., 2017a; Ferdowsi et al., 2013; Griffa et al., 2011). In classic DEM...

...-scale Network Method (PNM) reproduced two-phase flow in matrix considering viscous forces and capillary forces. The fracture flow model based on unsteady flow model simulated unsteady flow in opened fractures. The solid model uses the Finite Element Method (FEM) with cohesive zone element...

.... A stress-dependent shape factor may be defined and sharp moduli contrast between points in thesimulation domain defined to allow mathematically tractable nodal point interpolation when numerical methods are applied, (i.e. Galerkin finite element methods: Huyakorn and Pinder, 1983; Elsworth and Bai, 1992...

... Artificial Intelligence reservoir simulation Wellbore Design spatial reasoning element method Rock mechanics Upstream Oil & Gas porous sandstone numerical model strength sandstone microstructure model Microstructure Engineering ctscan data experimental result tensile strength...

... and other Discontinuities using Virtual Element Method Kubeyev, A., Maier, C. and Doster, F. Heriot-Watt University, Edinburgh, Scotland, United Kingdom Copyright 2019 ARMA, American Rock Mechanics Association This paper was prepared for presentation at the 53rd US Rock Mechanics/Geomechanics Symposium held...

... Upstream Oil & Gas normal load macroscopic friction coefficient drilling operation gouge layer thickness friction coefficient drop element method particle Artificial Intelligence Thickness kinetic energy release recurrence time slip event granular fault gouge coefficient drop...

... mechanics fracture energy grain-based model Microstructure element method rock microstructure compression test particle growth 1. INTRODUCTION Being the main component of the Earth's crust, rock is heavily involved in human engineering activity. Rock is a crude combination of different mineral...

... method (XFEM) and traditional finite element method (FEM) techniques are employed to study the behavior of a single crack initiation subjected to a tensile loading in pure mechanical (M), hydro-mechanical (HM) and thermo-mechanical (TM) conditions. For this purpose, water as the preferred fluid and 250 F...

... processes of hydrocarbon production, a study of fracture initiation and propagation in shale rock is conducted using the combined Finite-Discrete Element Method (FDEM). The simulations qualitatively match fracture patterns observed in triaxial direct-shear core flood experiments, and successfully replicate...

... failure mechanisms. trigon tessellation discontinuity rock mass stead element method mechanism tessellation Itasca Consulting Group hydraulic fracturing strength application brittle fracture stiffness Rock Mech Upstream Oil & Gas University Simulation Cundall fracture tensile...

...-existing fractures. Reservoir Characterization element method reservoir geomechanics Harrison sandstone Artificial Intelligence heterogeneous fractured rock variability stress tensor machine learning fractured sandstone Upstream Oil & Gas fractured rock effective variance stress...

... fracture modeling techniques with discrete element methods and traditional finite element approaches is strongly hindered by pre-defined joints and re-meshing, respectively. In this paper, we use the Extended Finite Element Method/Modelling (XFEM), which makes the initiation and propagation of a fracture...

... the Discrete Element Method (DEM) with the Lattice Boltzmann Method (LBM) in three dimensions. The solid polyhedral particles are modeled using DEM while the fluid phase is simulated using LBM. As previously mentioned, this approach is computationally intensive and requires parallel computing to accelerate...

... the combined finite-discrete element method (FDEM) to demonstrate the importance of the friction of grain-grain interfaces on the macroscopic rock behavior. This approach discretizes grains making intergranular and intragranular cracks easily traceable. The results of the simulation indicated that for rough...

... use Discrete Element Method (DEM) to study the rock cutting process. DEM 2D models give good qualitative results. Unfortunately, the calculated cutting forces are not in agreement with the ones measured in laboratory by cutting tests. To be able to compare correctly cutting modeling and cutting...