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Keywords: dfn
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Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 29–July 1, 2022
Paper Number: ARMA-DFNE-22-0048
... Abstract This paper focuses on the understanding of the controlling factors of breakthrough curves in fractured systems. DFN.lab is used to define DFN models derived from the characteristics of a sub-part of the Forsmark repository and to perform simulations of flow and of inert transport...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 29–July 1, 2022
Paper Number: ARMA-DFNE-22-0007
... Abstract When simulating flow and transport through sparsely fractured rocks in Earth’s subsurface, discrete fracture network (DFN) modeling has become the alternative approach to continuum approaches. In this work, DFNs are generated using dfnWorks, a parallelized computational suite...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 29–July 1, 2022
Paper Number: ARMA-DFNE-22-0014
... Abstract This paper presents the development and results of Discrete Fracture Network (DFN) modelling of a 100m wide fault zone for a proposed underground long wall panel at a coal mine in the Newcastle Coalfield, Australia. The purpose of the DFN modelling was to estimate the risk of unstable...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 29–July 1, 2022
Paper Number: ARMA-DFNE-22-0010
... Fracture Networks (DFN) and numerical modelling methods, with fewer lab-scale experiments. Advancements in 3D printing technology allows for generating valuable lab-scale physical models representing fractured media. In this work, a DFN model is built using the DFN software MoFrac and a 3D physical model...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 29–July 1, 2022
Paper Number: ARMA-DFNE-22-0002
... to investigate kinematically feasible sliding mechanisms beneath the dam spillway and abutments. This package of work included creation of a discrete fracture network model. The DFN modelling in this study was undertaken in two stages, with an initial model built to be representative of sub-horizontal fractures...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 29–July 1, 2022
Paper Number: ARMA-DFNE-22-0006
... Abstract Defining the fracture intensity in DFN models is crucial since a good refinement level is required to represent the insitu rock slopes conditions adequately. Most estimates are expressed in terms of the number of discontinuities per unit length (P10). However, the area...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 29–July 1, 2022
Paper Number: ARMA-DFNE-22-0041
... Abstract This study details characterization and Discrete Fracture Network (DFN) modeling of a naturally fractured carbonate reservoir with natural fractures and karst, or “non-matrix,” that are essential to production. Characterization of non-matrix follows a workflow where non-matrix...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 29–July 1, 2022
Paper Number: ARMA-DFNE-22-0004
... Abstract The city of Sydney (Australia) is currently undergoing a major infrastructure construction boom, with numerous rail and road tunnels currently under construction. This paper presents DFN modelling undertaken as part of the tunnel design process for a major road tunnel system...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 21–25, 2021
Paper Number: ARMA-DFNE-21-2407
... Abstract A three-dimensional fractal discrete fracture network (DFN) model for radon migration in fractured rocks is presented in this paper. In the model, the first-order model determines the location of fracture center and the distribution of fracture length, the von Mises-Fisher...
Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 21–25, 2021
Paper Number: ARMA-DFNE-21-2360
... Abstract We evaluate the use of graphs as a fast and relevant substitute to DFNs. Graphs reduce the DFNs’ complexity to their connectivity structure by forming an assembly of nodes connected by edges, to which physical properties, like a conductance, can be assigned. Both the graph...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0239
... ABSTRACT: Geomechanical discrete fracture networks (DFNs) are grown using a 3D finite element-based fracture mechanics simulator. The influence of the fracture growth rate exponent (ß) on the resulting fracture geometry and hydraulic properties of networks is investigated. Previous work has...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0240
... in fractured bedrock directly, using an explicit discrete fracture network (DFN) representation. This is the approach considered here. calculation meteoric water continuous porous media Upstream Oil & Gas DFN hydraulic fracturing ecpm representation boundary condition side length...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0469
... ABSTRACT ABSTRACT: We present an algorithm for system-reduction of DFNs using graph representations that inherit hydrological parameters like permeability and make sensible the notion of flow and transport on the graph. The graph is pruned based on edge fluxes obtained from solving the flow...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0426
... allows representation of a discrete fracture network (DFN) within a rock mass. Fracture aperture and permeability are allowed to vary with fluid pressure, according to the Bandis constitutive model. Pressure diffusion is permitted in the fractures and rock matrix, including hydraulic interactions between...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0575
... ABSTRACT: Microseismic monitoring has been widely used to image the growth of fracture network in unconventional reservoir development. It is the key for stimulation optimization to understand clearly geometric features of discrete fracture network (DFN) created by hydraulic fracturing...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0663
... ABSTRACT: The stochastic nature of the DFN process is such that there is an infinite, but equally probable, number of possible realisations of the 2D fracture systems based on the specified input parameters. Ideally, synthetic rock mass modelling should include the numerical testing...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0560
... Network, DFN) to an upper reservoir (continuum). The reservoirs are modeled using a continuum volume mesh, and the caprock, where fractures are naturally present, is modeled using a discrete fracture network. The constructed model allows one to capture the effect of fracture network complexity on CO 2...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-1213
... ABSTRACT: This paper summarizes the simplification approaches applied to the Discrete Fracture Network (DFN) used in modeling of field scale EGS and other unconventional reservoirs. The main objective of the DFN simplification processes is to preserve the properties of the rock mass, i.e...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0990
... and experiments in a medium with discrete parallel fractures have led to confidence that the models can accurately reproduce wave interaction with fractures. But what about waveforms for waves propagating through a more complex fracture network? In this work we use a DFN tool to create a fracture network and pass...

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